Boston Gear - Spur Gears
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Content
SPUR GEARS
SECTION CONTENTS
14-1/2° PRESSURE ANGLE – CATALOG NUMBER / DIMENSIONS
Spur Gears................................................................................................................................. 6 – 15
Change Gears........................................................................................................................... 16 – 20
Stem Pinions .................................................................................................................................... 21
Drawn Pinion Wire ........................................................................................................................... 22
Rack................................................................................................................................................... 23
Internal Gears ................................................................................................................................... 24
20° PRESSURE ANGLE – CATALOG NUMBER / DIMENSIONS
Spur Gears................................................................................................................................ 25 – 34
Rack................................................................................................................................................... 35
Internal Gears ................................................................................................................................... 36
Selection Procedure ................................................................................................................................. 37
Horsepower & Torque Ratings........................................................................................................ 38 – 50
Gear Gauges ............................................................................................................................................. 50
Stock Altered/Custom Spur Gears ................................................................................................. 87 – 89
Spur Gear Engineering Information ........................................................................................... 134 – 139
Gear Catalog
5
®
SPUR GEARS
141/2° PRESSURE ANGLE
48 AND 32 DIAMETRAL PITCH
BRASS
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
Proj.
DIAMETRAL PITCH
FACE
PITCH
DIA.
HUB
PROJ.
HUB
DIA.
BORE
OVERALL
LENGTH
.208
.250
.292
.312
.333
.375
.417
.458
.500
.542
.667
.750
.833
.917
1.000
1.125
1.250
1.375
1.500
1.750
2.000
2.083
2.500
3.000
4.000
.0935
–
BRASS
–
.125
–
–
.1875
–
–
.250
.50
.25
.3125
.62
.31
32
STANDARD TOLERANCES
48 D.P.
48 D.P.
TOLERANCE
±.0005
32 D.P.
32 D.P.
A
D
G127
G129
G130
G131
G132
G133
G134
G135
G136
G137
G138
G139
G140
G141
G142
G143
G144
G145
G146
G147
G148
G154
G149
G150
G151
09322
09324
09326
09328
09330
09332
09334
09336
09338
09340
09342
09344
09346
09348
09350
09352
09354
09356
09358
09360
09362
09364
09366
09368
09370
Face = .062"
Outside Dia. = Pitch Dia. + .062"
DIAMETRAL PITCH
DIMENSION
BORE
All
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
10
12
14
15
16
18
20
22
24
26
32
36
40
44
48
54
60
66
72
84
96
100
120
144
192
Style
See
Page
150
Hub
BRASS
10
14
16
20
24
28
32
40
48
64
80
96
112
128
.312
.438
.500
.625
.750
.875
1.000
1.250
1.500
2.000
2.500
3.000
3.500
4.000
8
10
12
14
15
16
18
20
22
24
26
28
30
32
36
40
44
48
52
56
.250
.312
.375
.438
.469
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.125
1.250
1.375
1.500
1.625
1.750
.125
–
–
.1875
–
–
.250
–
–
.3125
–
–
.375
–
–
A
G96
G98
G99
G101
G102
G103
G104
G105
G106
G110
G111
G112
G113
G114
09234
09238
09240
09244
09246
09248
09250
09252
09254
09256
09258
09260
09262
09264
G159
G161
G163
G165
G166
G167
G168
G169
G170
G171
G172
G173
G174
G175
G176
G177
G178
G179
G180
G181
09266
09268
09270
09272
09274
09276
09278
09280
09282
09284
09286
09288
09290
09292
09294
09296
09298
09300
09302
09304
Face = .188"
REFERENCE PAGES
Alterations — 149
Lubrication — 149
Materials — 150
.125
–
–
.1875
–
–
.250
–
–
–
–
.3125
(continued next page)
6
Gear Catalog
®
A
SPUR GEARS
141/2° PRESSURE ANGLE
32 AND 24 DIAMETRAL PITCH
BRASS AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Style Without Keyway
or Setscrew
See
Page Catalog Item
150 Number Code
Face = .188"
Outside Dia. = Pitch Dia. + .062"
Overall Length = .187" + Hub Proj.
32
DIAMETRAL PITCH
64
72
80
96
112
128
2.000
2.250
2.500
3.000
3.500
4.000
16
20
22
24
28
32
40
48
56
64
80
96
16
18
20
22
24
26
28
30
32
40
48
56
64
80
96
128
160
192
.500
.625
.688
.750
.875
1.000
1.250
1.500
1.750
2.000
2.500
3.000
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.250
1.500
1.750
2.000
2.500
3.000
4.000
5.000
6.000
.25
.3125
With
Setscrew
Catalog Item
Number Code
BRASS
B
C
.62
.31
D
.75
G182
G183
G184
G185
G186
G187
09306
09308
09310
09312
09314
09316
–
–
–
–
–
–
–
–
–
–
–
–
STEEL
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
32 D.P.
D.P.
32
TOLERANCE
±.0005
24 D.P.
24
D.P.
.1875
–
–
.250
–
–
.3125
.375
.3125
–
–
–
–
.375
–
–
.1875
.39
.45
.52
.58
.64
.70
.75
.75
.75
.31
.88
.38
1.00
.38
1.12
1.25
1.88
2.12
2.12
.38
.50
.50
.50
.50
.250
.3125
.375
.31
A
.31
.38
24
DIAMETRAL PITCH
S3216 09572
–
–
S3220 09574
–
–
S3222 09576
–
–
S3224 09578
–
–
S3228 09580
–
–
S3232 09582
–
–
S3240 09584
–
–
S3248 09586
–
–
S3256 09588
–
–
S3264 09590
–
–
S3280 09592
–
–
S3296 09594
–
–
–
–
H3216
09536
–
–
H3218
09538
–
–
H3220
09540
–
–
H3222
09542
–
–
H3224
09544
–
–
H3226
09546
–
–
H3228
09548
–
–
H3230
09550
–
–
H3232
09552
–
–
H3240
09554
–
–
H3248
09556
–
–
H3256
09558
–
–
H3264
09560
–
–
H3280
09562
–
–
H3296
09564
–
–
H32128 09566
–
–
H32160 09568
–
–
H32192 09570
Face = .250"
Outside Dia. = Pitch Dia. + .083"
Overall Length = .250" + Hub Proj.
BRASS
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 38
Lubrication — 149
Materials — 150
Selection Procedure — 37
12
16
18
24
30
36
42
48
54
60
66
72
84
96
120
144
.500
.667
.750
1.000
1.250
1.500
1.750
2.000
2.250
2.500
2.750
3.000
3.500
4.000
5.000
6.000
.1875
.38
.50
.50
.25
.250
.62
.25
.62
.25
B
.3125
.69
.31
C
.375
.75
.75
.75
.88
.88
.31
.31
.31
.38
.38
D
A
G254
G256
G257
G258
G259
G261
G263
G264
G265
G266
G267
G268
G269
G270
G272
G274
09202
09204
09206
09208
09210
09212
09214
09216
09218
09220
09222
09224
09226
09228
09230
09232
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(continued next page)
Gear Catalog
7
®
SPUR GEARS
141/2° PRESSURE ANGLE
24 AND 20 DIAMETRAL PITCH
STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
& Setscrew†
Catalog
Item
Number
Code
Face = .250"
Outside Dia. = Pitch Dia. + .083"
Overall Length = .250" + Hub Proj.
24
DIAMETRAL PITCH
STEEL
FACE
HUB
PROJ.
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
12
15
16
18
21
24
30
36
42
48
60
72
12
14
15
16
18
20
21
24
30
36
42
48
60
72
96
120
144
.500
.625
.667
.750
.875
1.000
1.250
1.500
1.750
2.000
2.500
3.000
.500
.583
.625
.667
.750
.833
.875
1.000
1.250
1.500
1.750
2.000
2.500
3.000
4.000
5.000
6.000
.375
–
–
–
–
–
–
–
–
–
–
.500
–
–
.250
.3125
.250
.3125
.375
.500
.36
.46
.50
.54
.62
.70
.74
.87
1.00
1.12
1.12
1.25
1.25
1.38
2.00
2.25
2.25
.31
A
.31
.31
.38
.50
20
DIAMETRAL PITCH
S2412
09630
–
–
S2415
09632
–
–
S2416
09634
–
–
S2418
09636
–
–
S2421
09638
–
–
S2424
09640
–
–
S2430
09642
–
–
S2436
09644
–
–
S2442
09646
–
–
S2448
09648
–
–
S2460
09650
–
–
S2472
09652
–
–
–
–
H2412†
09596
–
–
H2414†
09598
–
–
H2415‡
09600
–
–
H2416
09602
–
–
H2418
09604
–
–
H2420
09606
–
–
H2421
09608
–
–
H2424
09610
–
–
H2430
09612
–
–
H2436
09614
–
–
H2442
09616
–
–
H2448
09618
–
–
H2460
09620
–
–
H2472
09622
–
–
H2496
09624
–
–
H24120
09626
–
–
H24144
09628
Face = .375"
Outside Dia. = Pitch Dia. + .100"
Overall Length = .375" + Hub Proj.
STEEL
11
12
13
14
15
16
18
.600*
.600
.650
.700
.750
.800
.900
20
1.000
22
1.100
24
1.200
25
1.250
28
1.400
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
30
1.500
†H2412 & H2414 have #35 (.110) drilled hole through
one wall, no keyway.
32
1.600
35
1.750
36
1.800
40
2.000
24 D.P.
D.P.
32
20
D.P.
2024
D.P.D.P.
16
D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 38, 39
Lubrication — 149
Materials — 150
Selection Procedure — 37
‡H2415-H24144 has one setscrew, no keyway.
**NA11B-5/16"-NA14B-5/16 bore has #35 (.110) drilled
hole through one wall, no keyway.
††3/8" & 1/2" bores have one setscrew, no keyway.
NA40-5/8" & NA40-3/4" bores have standard keyway at
90° to setscrew. See Page 150.
.3125
.375
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.375
.500
.625
.750
48
2.400
50
2.500
.375
60
3.000
64
3.200
(continued next page)
8
Gear Catalog
®
.46
.46
.50
.56
.60
.66
.74
.38
.38
.84
.38
.82
.38
.92
.38
.97
.38
1.12
.38
1.22
.38
1.32
.50
1.47
.50
1.52
.50
1.72
.50
1.33
1.42
1.92
2.12
.50
A
NA11B
NA12B
NA13B
NA14B
NA15B
NA16B
NA18B
NA20B
–
NA22B
–
NA24
–
NA25B
–
NA28B
–
NA30B
–
NA32
–
NA35
–
NA36
–
NA40
–
–
–
NA48A
NA50A
NA60A
NA64A
09662
09664
09666
09668
09670
09672
09674
09676
–
09678
–
09680
–
09682
–
09684
–
09686
–
09688
–
09690
–
09692
–
09694
–
–
–
10208
10210
10212
10214
NA11B-5/16** 46000
NA12B-5/16** 46001
NA13B-5/16** 46002
NA14B-5/16** 46003
NA15B-3/8†† 46004
NA16B-3/8†† 46005
NA18B-3/8†† 46006
NA20B-3/8†† 46007
NA20B-1/2†† 46008
NA22B-3/8†† 46009
NA22B-1/2†† 46010
NA24-3/8†† 46011
NA24-1/2†† 46012
NA25B-3/8†† 46013
NA25B-1/2†† 46014
NA28B-3/8†† 46015
NA28B-1/2†† 46016
NA30B-3/8†† 46017
NA30B-1/2†† 46018
NA32-3/8†† 46019
NA32-1/2†† 46020
NA35-3/8†† 46021
NA35-1/2†† 46022
NA36-3/8†† 46023
NA36-1/2†† 46024
NA40-3/8†† 46025
NA40-1/2†† 46026
NA40-5/8
46027
NA40-3/4
46028
–
–
–
–
–
–
–
–
SPUR GEARS
141/2° PRESSURE ANGLE
20 AND 16 DIAMETRAL PITCH
CAST IRON, BRASS AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
Face = .375”
Outside Dia. = Pitch Dia. + .100”
Overall Length = .375” + Hub Proj.
20
DIAMETRAL PITCH
70
72
80
84
90
96
100
112
120
140
144
160
180
200
HUB
PROJ.
FACE
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
3.500
3.600
4.000
4.200
4.500
4.800
5.000
5.600
6.000
7.000
7.200
8.000
9.000
10.000
.375
1.25
.500
1.25
.500
1.50
2.25
16
DIAMETRAL PITCH
8
9
10
12
14
16
18
20
24
28
32
40
48
56
64
80
.500
.563
.625
.750
.875
1.000
1.125
1.250
1.500
1.750
2.000
2.500
3.000
3.500
4.000
5.000
11
12
13
14
15
16
18
.750*
.750
.813
.875
.938
1.000
1.125
20
1.250
22
1.375
24
1.500
†3/8" and 1/2" bores have one setscrew, no keyway.
26
1.625
5/8" bore and larger have standard keyway at 90° to
setscrew. See Page 150.
28
1.750
30
1.875
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
20 D.P.
20
D.P.
TOLERANCE
±.0005
16 D.P.
D.P.
16
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 39, 40
Lubrication — 149
Materials — 150
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
.1875
–
.250
–
.3125
–
–
.3125
.75
.375
.88
1.00
1.00
.375
.500
.500
.625
.500
.625
.500
.625
.750
.500
.625
.750
.500
.625
.750
.875
.500
.625
.750
.875
1.000
With Keyway
and Setscrew†
Catalog
Item
Number
Code
.56
.56
.63
.69
.75
.81
.94
.96
1.08
1.20
1.33
1.45
1.58
CAST IRON
NA70
10216
–
–
.50
NA72
10218
–
–
B
NA80
10220
–
–
NA84
10222
–
–
.50
NA90
10224
–
–
C
NA96
10226
–
–
NA100
10228
–
–
NA112
10230
–
–
NA120
10232
–
–
.50
NA140
10234
–
–
D
NA144
10236
–
–
NA160
10238
–
–
.62
NA180
10240
–
–
NA200B 10242
–
–
Face = .313"
Outside Dia. = Pitch Dia. + .125"
Overall Length = Face + Hub Proj.
BRASS
G226
09168
G227
09170
G228
09172
G229
09174
A
G230
09176
–
G231
09178
G232
09180
G233
09182
–
G235
09184
–
G236
09186
B
G237
09188
.31
G238
09190
G239
09192
D
G240
09194
.38
G241
09196
G242
09198
STEEL
Face = .500"
NB11B 09704
NB12B 09706
.44
NB13B 09708
NB14B 09710
NB15B 09712
.44
NB16B 09714
NB18B 09716
NB20B 09718
.44
–
–
NB22B 09720
.44
–
–
NB24B 09722
.44
A
–
–
–
–
NB26B 09724
.44
–
–
–
–
NB28B 09726
–
–
.50
–
–
–
–
NB30B 09728
–
–
.50
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
NB11B-3/8†
NB12B-3/8†
NB13B-3/8†
NB14B-3/8†
NB15B-1/2†
NB16B-1/2†
NB18B-1/2†
NB20B-1/2†
NB20B-5/8
NB22B-1/2†
NB22B-5/8
NB24B-1/2†
NB24B-5/8
NB24B-3/4
NB26B-1/2†
NB26B-5/8
NB26B-3/4
NB28B-1/2†
NB28B-5/8
NB28B-3/4
NB28B-7/8
NB30B-1/2†
NB30B-5/8
NB30B-3/4
NB30B-7/8
NB30B-1
46029
46030
46031
46032
46033
46034
46035
46036
46037
46038
46039
46040
46041
46042
46043
46044
40645
46046
46047
46048
46049
46050
46051
46052
46053
46054
(continued next page)
Gear Catalog
9
®
SPUR GEARS
141/2° PRESSURE ANGLE
16 AND 12 DIAMETRAL PITCH
STEEL, NON-METALLIC AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .500"
Outside Dia. = Pitch Dia. + .125"
Overall Length = .500" + Hub Proj.
16
DIAMETRAL PITCH
STEEL
HUB
PROJ.
FACE
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
TOLERANCE
±.0005
32
2.000
.500
.625
.750
.875
1.000
36
40
48
2.250
2.500
3.000
.500
16
20
24
32
40
48
64
1.000
1.250
1.500
2.000
2.500
3.000
4.000
54
56
60
64
72
80
84
96
112
120
128
144
160
192
3.375
3.500
3.750
4.000
4.500
5.000
5.250
6.000
7.000
7.500
8.000
9.000
10.000
12.000
.375
.500
.500
.625
.625
1.70
1.95
1.69
2.19
.81
1.06
1.31
1.81
–
–
–
1.25
1.25
1.38
1.38
1.38
1.50
1.50
1.50
1.50
1.50
1.50
1.75
1.75
2.00
NB32
–
.50
–
A
–
–
NB36
.50
NB40A
NB48A
NON-METALLIC
QBH16
.50
QBH20
.50
QBH24
.50
A
QBH32
–
QB40
–
QB48
–
QB64
CAST IRON
.50
NB54
.50
B
NB56
.62
NB60
NB64
NB72
C
NB80
.62
D
.75
12
DIAMETRAL PITCH
09730
–
–
–
–
09732
10244
10246
NB32-1/2
NB32-5/8
NB32-3/4
NB32-7/8
NB32-1
–
–
–
46055
46056
46057
46058
46059
–
–
–
09014
09018
09022
09024
09000
09002
09006
–
–
–
–
–
–
–
–
–
–
–
–
–
–
10248
–
–
10250
–
–
10252
–
–
10254
–
–
10256
–
–
10258
–
–
NB84
10260
–
–
NB96
10262
–
–
NB112
10264
–
–
NB120
10266
–
–
NB128
10268
–
–
NB144
10270
–
–
NB160B 10272
–
–
NB192B 10274
–
–
Face = .750"
Outside Dia. = Pitch Dia. + .167"
Overall Length = .750" + Hub Proj.
STEEL
16 D.P.
D.P.
16
12 D.P.
D.P.
12
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 40, 41
Lubrication — 149
Materials — 150
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
11
12
13
14
15
16
18
1.000*
1.000
1.083
1.167
1.250
1.333
1.500
20
1.667
21
1.750
22
1.833
24
2.000
30
32
36
40
42
2.500
2.667
3.000
3.333
3.500
†1/2" bore has one setscrew, no keyway.
5/8" bore and larger have standard keyway at 90° to
setscrew. See Page 150.
.500
.625
.625
.750
.625
.750
.875
.625
.750
.875
1.000
.625
.750
.875
1.000
.625
(continued next page)
10
Gear Catalog
®
.75
.75
.83
.92
1.00
.99
1.15
.50
.50
1.32
.50
1.40
.50
A
1.49
.50
1.65
.50
2.15
1.92
2.25
2.34
2.50
.62
ND11B
ND12B
ND13B
ND14B
ND15B
ND16B
ND18B
ND20B
–
ND21B
–
–
ND22B
–
–
–
ND24B
–
–
–
ND30
ND32A
ND36A
ND40A
ND42A
09744
09746
09748
09750
09752
09754
09756
09758
–
09760
–
–
09762
–
–
–
09764
–
–
–
09766
10276
10278
10280
10282
ND11B-1/2†
ND12B-1/2†
ND13B-1/2†
ND14B-1/2†
ND15B-5/8
ND16B-5/8
ND18B-5/8
ND20B-5/8
ND20B-3/4
ND21B-5/8
ND21B-3/4
ND21B-7/8
ND22B-5/8
ND22B-3/4
ND22B-7/8
ND22B-1
ND24B-5/8
ND24B-3/4
ND24B-7/8
ND24B-1
–
–
–
–
–
46060
46061
46062
46063
46064
46065
46066
46067
46068
46069
46070
46071
46072
46073
46074
46075
46076
46077
46078
46079
–
–
–
–
–
SPUR GEARS
141/2° PRESSURE ANGLE
12 AND 10 DIAMETRAL PITCH
STEEL, NON-METALLIC AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
12
DIAMETRAL PITCH
FACE
PITCH
DIA.
HUB
PROJ.
HUB
DIA.
BORE
OVERALL
LENGTH
15
18
21
24
30
36
48
60
1.250
1.500
1.750
2.000
2.500
3.000
4.000
5.000
48
54
60
64
72
84
96
108
112
120
144
168
4.000
4.500
5.000
5.333
6.000
7.000
8.000
9.000
9.333
10.000
12.000
14.000
.750
1.00
1.25
1.50
1.75
2.25
–
–
–
.750
1.75
.750
2.00
.875
2.00
.500
.625
10
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
BORE
All
12 D.P.
12
D.P.
TOLERANCE
±.0005
10 D.P.
10
D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 41, 42
Lubrication — 149
Materials — 150
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
†All gears have standard keyway at 90° to setscrew.
See Page 150.
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
11
12
14
15
16
1.200*
1.200
1.400
1.500
1.600
18
1.800
20
2.000
24
2.400
25
28
30
32
35
36
2.500
2.800
3.000
3.200
3.500
3.600
15
18
20
25
30
1.500
1.800
2.000
2.500
3.000
.625
.750
.750
.875
.750
.875
1.000
.750
.875
1.000
.750
.750
.625
.750
.92
.92
1.02
1.12
1.22
1.42
1.62
2.02
2.12
1.81
2.02
2.22
2.52
2.61
1.20
1.50
1.70
2.20
2.70
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .750"
Outside Dia. = Pitch Dia. + .167"
Overall Length = .750" + Hub Proj.
NON-METALLIC
QDH15 09038
–
–
.50
QDH18 09042
–
–
QDH21 09046
–
–
QDH24 09050
–
–
.50
A
QDH30 09052
–
–
–
QD36
09026
–
–
–
QD48
09030
–
–
–
QD60
09034
–
–
CAST-IRON
ND48
10284
–
–
C
ND54
10286
–
–
ND60
10288
–
–
.75
ND64
10290
–
–
ND72
10292
–
–
ND84
10294
–
–
ND96
10296
–
–
D
ND108 10298
–
–
.75
ND112 10300
–
–
ND120 10302
–
–
ND144 10304
–
–
1.00
ND168 10306
–
–
Face = 1.000"
Outside Dia. = Pitch Dia. + .200"
Overall Length = 1.000" + Hub Proj.
STEEL
NF11B 09778 NF11B-5/8 46080
.62
NF12B 09780 NF12B-5/8 46081
NF14B 09782 NF14B-5/8 46082
NF15B 09784 NF15B-3/4 46083
.62
NF16B 09786 NF16B-3/4 46084
NF18B 09788 NF18B-3/4 46085
.62
–
–
NF18B-7/8 46086
NF20B 09790 NF20B-3/4 46087
.62
–
–
NF20B-7/8 46088
A
–
–
NF20B-1
46089
NF24B 09792 NF24B-3/4 46090
.62
–
–
NF24B-7/8 46091
–
–
NF24B-1
46092
.62
NF25
09794
–
–
NF28A 10310
–
–
NF30A 10312
–
–
.88
NF32A 10314
–
–
NF35A 10316
–
–
NF36A 10318
–
–
NON-METALLIC
QFH15 09062
–
–
.62
QFH18 09066
–
–
A
QFH20 09068
–
–
.62
QFH25 09070
–
–
QFH30 09072
–
–
(continued next page)
Gear Catalog
11
®
SPUR GEARS
141/2° PRESSURE ANGLE
10 AND 8 DIAMETRAL PITCH
CAST IRON, STEEL AND NON-METALLIC
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Bore
Dia.
DIAMETRAL PITCH
HUB
PROJ.
FACE
KEYWAY
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
4.000
4.200
4.500
4.800
5.000
5.400
5.500
6.000
6.400
7.000
7.200
8.000
8.400
9.000
9.600
10.000
11.000
12.000
14.000
14.400
16.000
18.000
2.12
.875
2.25
2.25
1.00
2.50
2.75
8
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
BORE
All
10D.P.
D.P.
10
TOLERANCE
±.0005
1.500*
1.500
1.750
1.875
16
2.000
18
2.250
20
2.500
22
2.750
24
28
30
32
3.000
3.500
3.750
4.000
16
18
20
24
28
2.000
2.250
2.500
3.000
3.500
D.P.
88 D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 42, 43
Lubrication — 149
Materials — 150
Selection Procedure — 37
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
†All gears have standard keyway, at 90° to setscrew.
See Page 150.
12
11
12
14
15
Gear Catalog
®
.750
.875
.875
1.000
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
.750
.875
(continued next page)
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 1.000"
Outside Dia. = Pitch Dia. + .200"
Overall Length = 1.000" + Hub Proj.
10
40
42
45
48
50
54
55
60
64
70
72
80
84
90
96
100
110
120
140
144
160
180
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
1.12
1.12
1.31
1.43
1.56
1.81
2.06
2.31
2.06
2.56
2.75
3.00
1.62
1.88
2.12
2.62
3.12
CAST IRON
NF40
10320
–
–
NF42
10322
–
–
B
NF45
10324
–
–
NF48
10326
–
–
NF50
10328
–
–
C
NF54
10330
–
–
.88
NF55
10332
–
–
NF60
10334
–
–
NF64
10336
–
–
NF70
10338
–
–
NF72
10340
–
–
NF80
10342
–
–
NF84
10344
–
–
D
NF90
10346
–
–
NF96
10348
–
–
.88
NF100
10350
–
–
NF110
10352
–
–
NF120
10356
–
–
NF140
10358
–
–
1.00
NF144
10360
–
–
NF160
10362
–
–
NF180
10364
–
–
Face = 1.250"
Outside Dia. = Pitch Dia. + .250"
Overall Length = 1.250" + Hub Proj.
STEEL
NH11B 09806 NH11B-3/4 46093
.75
NH12B 09808 NH12B-3/4 46094
NH14B 09810 NH14B-3/4 46095
.75
NH15B 09812 NH15B-7/8 46096
NH16B 09814 NH16B-7/8 46097
.75
–
–
NH16B-1
46098
NH18B 09816 NH18B-7/8 46099
.75
–
–
NH18B-1
46100
–
–
NH18B-1-1/8 46101
A
NH20B 09818 NH20B-7/8 46102
.75
–
–
NH20B-1
46103
–
–
NH20B-1-1/8 46104
NH22B 09820 NH22B-7/8 46105
.75
–
–
NH22B-1
46106
–
–
NH22B-1-1/8 46107
NH24A 10368
–
–
.88
NH28A 10370
–
–
NH30A 10372
–
–
.88
NH32A 10374
–
–
NON-METALLIC
QHH16 09082
–
–
.75
QHH18 09084
–
–
A
QHH20 09086
–
–
.75
QHH24 09088
–
–
QHH28 09090
–
–
SPUR GEARS
141/2° PRESSURE ANGLE
8 AND 6 DIAMETRAL PITCH
CAST IRON AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
Face = 1.250"
Outside Dia. = Pitch Dia. + .250"
Overall Length = 1.250" + Hub Proj.
8
DIAMETRAL PITCH
FACE
PITCH
DIA.
HUB
PROJ.
HUB
DIA.
BORE
OVERALL
LENGTH
36
40
42
44
48
54
56
60
64
72
80
84
88
96
112
120
128
144
160
DIMENSION
BORE
All
TOLERANCE
±.0005
14
15
18
6 D.P.
20
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 43, 44
Lubrication — 149
Materials — 150
Selection Procedure — 37
2.50
1.125
3.00
1.125
3.25
DIAMETRAL PITCH
16
88 D.P.
D.P.
1.000
6
11
12
STANDARD TOLERANCES
4.500
5.000
5.250
5.500
6.000
6.750
7.000
7.500
8.000
9.000
10.000
10.500
11.000
12.000
14.000
15.000
16.000
18.000
20.000
21
24
27
30
2.000* 1.000
2.000
2.333 1.000
1.125
1.000
2.500 1.125
1.1875
1.250
1.000
2.667 1.125
1.1875
1.250
1.000
3.000 1.125
1.1875
1.250
1.000
3.333 1.125
1.1875
1.250
3.500 1.000
4.000
4.500 1.125
5.000
With Keyway
and Setscrew†
Catalog
Item
Number
Code
CAST IRON
NH36
10376
–
–
NH40
10378
–
–
B
NH42
10380
–
–
NH44
10382
–
–
NH48
10384
–
–
1.00
C
NH54
10386
–
–
NH56
10388
–
–
NH60
10390
–
–
NH64
10392
–
–
NH72
10394
–
–
NH80
10396
–
–
NH84
10398
–
–
D
NH88
10400
–
–
NH96
10402
–
–
1.12
NH112 10404
–
–
NH120 10406
–
–
NH128 10408
–
–
NH144 10410
–
–
1.25
NH160B 10412
–
–
Face = 1.500"
Outside Dia. = Pitch Dia + .333"
Overall Length = 1.500" + Hub Proj.
STEEL
1.46
.88
1.79
.88
1.96
.88
2.13
.88
2.46
.88
2.79
.88
2.96
3.00
3.50
4.00
.88
.88
A
NJ11B
NJ12B
NJ14B
–
NJ15B
–
–
–
NJ16B
–
–
–
NJ18B
–
–
–
NJ20
–
–
–
NJ21B
NJ24A
NJ27A
NJ30A
09830
09832
09834
–
09836
–
–
–
09838
–
–
–
09840
–
–
–
09842
–
–
–
09844
10414
10416
10418
NJ11B-1
NJ12B-1
NJ14B-1
NJ14B-1-1/8
NJ15B-1
NJ15B-1-1/8
NJ15B-1-3/16
NJ15B-1-1/4
NJ16B-1
NJ16B-1-1/8
NJ16B-1-3/16
NJ16B-1-1/4
NJ18B-1
NJ18B-1-1/8
NJ18B-1-3/16
NJ18B-1-1/4
NJ20-1
NJ20-1-1/8
NJ20-1-3/16
NJ20-1-1/4
–
–
–
–
46108
46109
46110
46111
46112
46113
46114
46115
46116
46117
46118
46119
46120
46121
46122
46123
46124
46125
46126
46127
–
–
–
–
(continued next page)
*Special Pitch Diameter, used for calculating Center
Distance only, not Ratio.
†All gears have standard keyway, at 90° to setscrew.
See Page 150.
Gear Catalog
13
®
SPUR GEARS
141/2° PRESSURE ANGLE
6 AND 5 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Style
See
Page
150
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = 1.500˝
Outside Dia. = Pitch Dia + .333˝
Overall Length = 1.500˝ + Hub Proj.
6
DIAMETRAL PITCH
CAST IRON
FACE
PITCH
DIA.
32
33
36
40
42
48
54
60
64
66
72
84
96
108
120
144
HUB
PROJ.
HUB
DIA.
BORE
5.333
5.500
6.000
6.667
7.000
8.000
9.000
10.000
10.667
11.000
12.000
14.000
16.000
18.000
20.000
24.000
B
1.125
2.50
1.00
C
1.25
D
3.00
1.250
3.25
3.50
3.75
1.50
STANDARD TOLERANCES
DIMENSION
BORE
All
D.P.
66D.P.
TOLERANCE
±.0005
D.P.
55D.P.
11
12
14
15
16
18
20
2.400*
2.400
2.800
3.000
3.200
3.600
4.000
24
25
30
35
40
45
50
55
60
70
80
100
4.800
5.000
6.000
7.000
8.000
9.000
10.000
11.000
12.000
14.000
16.000
20.000
1.0625
STEEL
1.78
1.78
2.18
2.38
.88
2.58
2.98
3.38
CAST IRON
1.0625
3.00
1.25
1.1875
3.00
1.25
1.1875
3.50
1.25
1.3125
3.75
1.50
A
A
B
D
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 44
Lubrication — 149
Materials — 150
Selection Procedure — 37
14
Gear Catalog
®
10420
10422
10424
10426
10428
10430
10432
10434
10436
10438
10440
10442
10444
10446
10448
10452
Face = 1.750"
Outside Dia. = Pitch Dia. + .400"
Overall Length = 1.750" + Hub Proj.
5
DIAMETRAL PITCH
OVERALL
LENGTH
NJ32
NJ33
NJ36
NJ40
NJ42
NJ48
NJ54
NJ60
NJ64
NJ66
NJ72
NJ84
NJ96
NJ108
NJ120B
NJ144B
NK11B
NK12B
NK14B
NK15B
NK16B
NK18B
NK20B
09846
09848
09850
09852
09854
09856
09858
NK24B
NK25B
NK30B
NK35B
NK40B
NK45B
NK50B
NK55B
NK60B
NK70B
NK80B
NK100B
10454
10456
10458
10460
10462
10464
10466
10468
10470
10472
10474
10478
SPUR GEARS
141/2° PRESSURE ANGLE
4 AND 3 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
DIAMETRAL PITCH
FACE
PITCH
DIA.
HUB
PROJ.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
4 D.P.
D.P.
TOLERANCE
±.0005
D.P.
33D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 44, 45
Lubrication — 149
Materials — 150
Selection Procedure — 37
3.000*
3.000
3.500
3.750
4.000
4.500
5.000
5.500
24
28
30
32
36
40
42
44
48
54
56
60
64
72
80
84
88
96
6.000
7.000
7.500
8.000
9.000
10.000
10.500
11.000
12.000
13.500
14.000
15.000
16.000
18.000
20.000
21.000
22.000
24.000
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = 2.000"
Outside Dia. = Pitch Dia. + .500"
Overall Length = 2.000" + Hub Proj.
4
11
12
14
15
16
18
20
22
Style
See
Page
150
1.125
STEEL
2.27
2.27
2.77
3.02
.88
3.27
3.77
4.27
4.77
CAST IRON
1.125
09860
09862
09864
09866
09868
09870
09872
09874
A
3.50
1.250
4.00
1.375
A
NL11B
NL12B
NL14B
NL15B
NL16B
NL18B
NL20B
NL22B
4.50
3
DIAMETRAL PITCH
NL24B
10484
NL28B
10486
NL30
10488
B
NL32B
10490
NL36B
10492
NL40B
10494
C
NL42
10496
1.50
NL44B
10498
NL48B
10500
NL54
10502
NL56B
10504
NL60
10506
D
NL64B
10508
NL72B
10510
NL80B
10512
1.50
NL84
10514
NL88B
10516
1.75
NL96B
10518
Face = 3.000"†
Outside Dia. = Pitch Dia. + .667"
Overall Length = Face + Hub Proj.
STEEL
11
12
14
15
16
18
20
21
4.000*
4.000
4.667
5.000
5.333
6.000
6.667
7.000
24
30
36
42
48
54
60
72
84
96
108
8.000
10.000
12.000
14.000
16.000
18.000
20.000
24.000
28.000
32.000
36.000
1.3125
–
–
A
CAST IRON
4.50
1.25
1.4375
5.25
1.75
1.5625
5.25
1.75
1.6875
5.50
5.75
1.75
1.9375
5.75
1.75
B
C
D
NO11B†
NO12B†
NO14B
NO15B
NO16B
NO18B
NO20
NO21B
09876
09878
09880
09882
09884
09886
09888
09890
NO24B
NO30B
NO36B
NO42
NO48B
NO54
NO60B
NO72B
NO84B
NO96B
NO108B
10524
10526
10528
10530
10532
10534
10536
10538
10540
10542
10544
*Special Pitch Diameter, used for calculating Center Distance only, not Ratio.
†NO11B and NO12B have 4" Face.
Gear Catalog
15
®
CHANGE GEARS
141/2° PRESSURE ANGLE
20 DI AM ETRA L PITCH
S T E E L A N D CA ST I R O N
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
20
DIAMETRAL PITCH
.375 FACE
PITCH
DIA.
1
1
(2) 8 × 16 KEYWAYS
180° APART
HUB
DIA.
.625 BORE
REFERENCE PAGES
20 D.P.
D.P.
20
Alterations — 149
Horsepower Ratings — 39
Lubrication — 149
Materials — 150
Selection Procedure — 37
COMPOUND
S T E E L B U S H IN G S
These steel bushings have 2 keys, 180°
apart and fit bores of GA series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.4370
.4380
.125
.737
.733
.625
.750
O R D ER BY C A T A L O G N U M BE R
OR ITE M C ODE
16
CATALOG NO.
ITEM CODE
GAB20A
18500
Gear Catalog
®
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
STEEL
1.000
GA20
1.050
GA21
1.100
GA22
1.150
GA23
1.200
GA24
1.250
GA25
1.300
GA26
1.350
GA27
1.400
GA28
1.450
GA29
1.500
GA30
1.550
GA31
1.600
GA32
1.650
GA33
1.700
–
GA34
1.750
GA35
1.800
GA36
1.850
GA37
1.900
GA38
1.950
GA39
2.000
GA40
2.050
GA41
2.100
GA42
2.150
GA43
2.200
GA44
2.250
GA45
2.300
GA46
2.350
GA47
2.400
GA48
2.450
GA49
2.500
GA50
CAST IRON
2.550
GA51B
2.600
GA52B
2.650
GA53B
2.700
GA54B
2.750
GA55B
2.800
GA56B
2.850
GA57B
2.900 1.38 GA58B
2.950
GA59B
3.000
GA60B
3.050
GA61B
3.100
GA62B
3.150
GA63B
3.200
GA64B
3.250
GA65B
3.300
GA66B
3.350 1.56 GA67B
3.400
GA68B
3.450
GA69B
3.500
GA70B
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.100"
10038
10040
10042
10044
10046
10048
10050
10052
10054
10056
10058
10060
10062
10064
10066
10068
10070
10072
10074
10076
10078
10080
10082
10084
10086
10088
10090
10092
10094
10096
10098
10802
10804
10806
10808
10810
10812
10814
10816
10818
10820
10822
10824
10826
10828
10830
10832
10834
10836
10838
10840
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CAST IRON
3.550
GA71B
3.600
GA72B
3.650
GA73B
3.700
GA74B
3.750 1.56 GA75B
3.800
GA76B
3.850
GA77B
3.900
GA78B
3.950
GA79B
4.000
GA80B
4.050
GA81B
4.100
GA82B
4.150
GA83B
4.200
GA84B
4.250
GA85B
4.300
GA86B
4.350
GA87B
4.400
GA88B
4.450
GA89B
4.500
GA90B
4.550
GA91B
4.600
GA92B
4.650
GA93B
4.700
GA94B
4.750
GA95B
4.800
GA96B
4.850
GA97B
4.900 1.69 GA98B
4.950
GA99B
5.000
GA100B
5.050
GA101B
5.100
GA102B
5.150
GA103B
5.200
GA104B
5.250
GA105B
5.300
GA106B
5.350
GA107B
5.400
GA108B
5.450
GA109B
5.500
GA110B
5.550
GA111B
5.600
GA112B
5.650
GA113B
5.700
GA114B
5.750
GA115B
5.800
GA116B
5.850
GA117B
5.900
GA118B
5.950
GA119B
6.000
GA120B
Style
See
Page
150
10842
10844
10846
10848
10850
10852
10854
10856
10858
10860
10862
10864
10866
10868
10870
10872
10874
10876
10878
10880
10882
10884
10886
10888
10890
10892
10894
10896
10898
10900
10902
10904
10906
10908
10910
10912
10914
10916
10918
10920
10922
10924
10926
10928
10930
10932
10934
10936
10938
10940
20 – 78 Teeth – A
79 – 120 Teeth – C
CHANGE GEARS
141/2° PRESSURE ANGLE
16 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
16
DIAMETRAL PITCH
3
3
(2)
×
KEYWAYS
16 32
180° APART
.500 FACE
PITCH
DIA.
HUB
DIA.
.750 BORE
R E F E R EN CE P AG E S
16 D.P.
D.P.
Alterations — 149
Horsepower Ratings — 40
Lubrication — 149
Materials — 150
Selection Procedure — 37
COMPOUND
S T E E L B U S H IN G S
These steel bushings have 2 keys, 180°
apart and fit bores of GB series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.4995
.5005
.188
.914
.910
.750
1.000
STEEL
1.250
GB20
1.313
GB21
1.375
GB22
1.438
GB23
1.500
GB24
1.563
GB25
1.625
GB26
1.688
GB27
1.750
GB28
1.813
GB29
1.875
–
GB30
1.938
GB31
2.000
GB32
2.063
GB33
2.125
GB34
2.188
GB35
2.250
GB36
2.313
GB37
2.375
GB38
2.438
GB39
2.500
GB40
CAST IRON
10100
10102
10104
10106
10108
10110
10112
10114
10116
10118
10120
10122
10124
10126
10128
10130
10132
10134
10136
10138
10140
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
2.563
2.625
2.688
2.750
2.913
2.875
2.938
3.000
3.063
3.125
3.188
3.250
3.313
3.375
3.438
3.500
3.563
3.625
3.688
3.750
3.813
3.875
3.938
4.000
4.063
4.125
4.188
4.250
4.313
4.375
4.438
4.500
4.563
4.625
4.688
10942
10944
10946
10948
10950
10952
10954
10956
10958
10960
10962
10964
10966
10968
10970
10972
10974
10976
10978
10980
10982
10984
10986
10988
10990
10992
10994
10996
10998
11000
11002
11004
11006
11008
11010
1.81
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.125"
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
1.56
Pitch
Dia.
GB41B
GB42B
GB43B
GB44B
GB45B
GB46B
GB47B
GB48B
GB49B
GB50B
GB51B
GB52B
GB53B
GB54B
GB55B
GB56B
GB57B
GB58B
GB59B
GB60B
GB61B
GB62B
GB63B
GB64B
GB65B
GB66B
GB67B
GB68B
GB69B
GB70B
GB71B
GB72B
GB73B
GB74B
GB75B
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
CAST IRON
4.750
GB76B
4.813
GB77B
4.875
GB78B
4.938
GB79B
5.000
GB80B
5.063
GB81B
5.125
GB82A
5.188
GB83A
5.250
GB84A
5.313
GB85A
5.375
GB86A
5.438
GB87A
5.500
GB88A
5.563
GB89A
5.625
GB90A
5.688
GB91A
5.750
GB92A
5.813
GB93A
5.875
GB94A
5.938
GB95A
6.000
GB96A
6.063
GB97A
6.125
GB98A
6.188
GB99A
6.250
GB100A
6.313 1.81 GB101A
6.375
GB102A
6.438
GB103A
6.500
GB104A
6.563
GB105A
6.625
GB106A
6.688
GB107A
6.750
GB108A
6.913
GB109A
6.975
GB110A
6.938
GB111A
7.000
GB112A
7.063
GB113A
7.125
GB114A
7.188
GB115A
7.250
GB116A
7.313
GB117A
7.375
GB118A
7.438
GB119A
7.500
GB120A
7.563
GB121A
7.625
GB122A
7.688
GB123A
7.750
GB124A
7.813
GB125A
7.875
GB126A
7.938
GB127A
8.000
GB128A
Style
See
Page
150
11012
11014
11016
11018
11020
11022
11024
11026
11028
11030
11032
11034
11036
11038
11040
11042
11044
11046
11048
11050
11052
11054
11056
11058
11060
11062
11064
11066
11068
11070
11072
11074
11076
11078
11080
11082
11084
11086
11088
11090
11092
11094
11096
11098
11100
11102
11104
11106
11108
11110
11112
11114
11116
20 – 79 Teeth – A
80 – 128 Teeth – C
O R D ER BY C A T A L O G N U M BE R
OR ITE M C ODE
CATALOG NO.
ITEM CODE
GBB16A
18502
Gear Catalog
17
®
CHANGE GEARS
141/2° PRESSURE ANGLE
12 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
12
DIAMETRAL PITCH
1 1
(2) – × – KEYWAYS
4 8
180° APART
.750 FACE
PITCH
DIA.
HUB
DIA.
1.000 BORE
REFERENCE PAGES
12
12 D.P.
D.P.
Alterations — 149
Horsepower Ratings — 41
Lubrication — 149
Materials — 150
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GD series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.7495
.7505
.250
1.217
1.213
1.000
1.50
ORDER BY CATALOG NUMBER
OR ITEM CODE
18
CATALOG NO.
ITEM CODE
GDB12A
18504
Gear Catalog
®
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
STEEL
1.667
GD20
1.750
GD21
1.833
GD22
1.917
GD23
2.000
GD24
2.083
GD25
2.167
GD26
2.250
GD27
2.333
–
GD28
2.417
GD29
2.500
GD30
2.583
GD31
2.667
GD32
2.750
GD33
2.833
GD34
2.971
GD35
3.000
GD36
CAST IRON
3.083
GD37A
3.167
GD38A
3.250
GD39A
3.333
GD40A
3.417
GD41A
3.500 1.76 GD42A
3.583
GD43A
3.667
GD44A
3.750
GD45A
3.833
GD46A
3.917
GD47A
4.000
GD48A
4.083
GD49A
4.167
GD50A
4.250
GD51A
4.333
GD52A
4.417
GD53A
4.500
GD54A
4.583
GD55A
4.667
GD56A
4.750
GD57A
4.833
GD58A
4.917
GD59A
5.000
GD60A
5.083 2.19 GD61A
5.167
GD62A
5.250
GD63A
5.333
GD64A
5.417
GD65A
5.500
GD66A
5.583
GD67A
5.667
GD68A
5.750
GD69A
5.833
GD70A
5.917
GD71A
6.000
GD72A
6.083
GD73A
6.167
GD74A
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.167"
10142
10144
10146
10148
10150
10152
10154
10156
10158
10160
10162
10164
10166
10168
10170
10172
10174
11118
11120
11122
11124
11126
11128
11130
11132
11134
11136
11138
11140
11142
11144
11146
11148
11150
11152
11154
11156
11158
11160
11162
11164
11166
11168
11170
11172
11174
11176
11178
11180
11182
11184
11186
11188
11190
11192
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
CAST IRON
6.250
GD75A
6.333
GD76A
6.417
GD77A
6.500
GD78A
6.583 2.19 GD79A
6.667
GD80A
6.750
GD81A
6.833
GD82A
6.917
GD83A
7.000
GD84A
7.083
GD85A
7.167
GD86A
7.250
GD87A
7.333
GD88A
7.417
GD89A
7.500
GD90A
7.583
GD91A
7.667
GD92A
7.750
GD93A
7.833
GD94A
7.917
GD95A
8.000
GD96A
8.083
GD97A
8.167
GD98A
8.250
GD99A
8.333 2.44 GD100A
8.417
GD101A
8.500
GD102A
8.583
GD103A
8.667
GD104A
8.750
GD105A
8.833
GD106A
8.917
GD107A
9.000
GD108A
9.083
GD109A
9.167
GD110A
9.250
GD111A
9.333
GD112A
9.417
GD113A
9.500
GD114A
9.583
GD115A
9.667
GD116A
9.750
GD117A
9.833
GD118A
9.917
GD119A
10.000
GD120A
Style
See
Page
150
11194
11196
11198
11200
11202
11204
11206
11208
11210
11212
11214
11216
11218
11220
11222
11224
11226
11228
11230
11232
11234
11236
11238
11240
11242
11244
11246
11248
11250
11252
11254
11256
11258
11260
11262
11264
11266
11268
11270
11272
11274
11276
11278
11280
11282
11284
20 – 60 Teeth – A
61 – 120 Teeth – C
CHANGE GEARS
141/2° PRESSURE ANGLE
10 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
10
DIAMETRAL PITCH
5
5
×
KEYWAYS
16 32
180° APART
1.000" FACE
PITCH
DIA.
(2)
HUB
DIA.
1.250 BORE
REFERENCE PAGES
10 D.P.
10
D.P.
Alterations — 149
Horsepower Ratings — 42
Lubrication — 149
Materials — 150
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GF series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
.9995
1.0005
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
STEEL
2.000
GF20
2.100
GF21
2.200
GF22
2.300
GF23
2.400
GF24
2.500
–
GF25
2.600
GF26
2.700
GF27
2.800
GF28
2.900
GF29
3.000
GF30
CAST IRON
3.100
GF31B
3.200
GF32B
3.300
GF33B
3.400
GF34B
3.500
GF35B
3.600 1.94 GF36B
3.700
GF37B
3.800
GF38B
3.900
GF39B
4.000
GF40B
4.100
GF41B
4.200
GF42B
4.300
GF43B
4.400
GF44B
4.500
GF45B
4.600
GF46B
4.700
GF47B
4.800 2.68 GF48B
4.900
GF49B
5.000
GF50B
5.100
GF51B
5.200
GF52A
5.300
GF53A
5.400
GF54A
5.500
GF55A
5.600
GF56A
5.700 3.12 GF57A
5.800
GF58A
5.900
GF59A
6.000
GF60A
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.200"
10176
10178
10180
10182
10184
10186
10188
10190
10192
10194
10196
11286
11288
11290
11292
11294
11296
11298
11300
11302
11304
11306
11308
11310
11312
11314
11316
11318
11320
11322
11324
11326
11328
11330
11332
11334
11336
11338
11340
11342
11344
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CAST IRON
6.100
GF61A
6.200
GF62A
6.300
GF63A
6.400
GF64A
6.500
GF65A
6.600
GF66A
6.700
GF67A
6.800
GF68A
6.900
GF69A
7.000
GF70A
7.100
GF71A
7.200
GF72A
7.300
GF73A
7.400
GF74A
7.500
GF75A
7.600
GF76A
7.700
GF77A
7.800
GF78A
7.900
GF79A
8.000
GF80A
8.100 3.12 GF81A
8.200
GF82A
8.300
GF83A
8.400
GF84A
8.500
GF85A
8.600
GF86A
8.700
GF87A
8.800
GF88A
8.900
GF89A
9.000
GF90A
9.100
GF91A
9.200
GF92A
9.300
GF93A
9.400
GF94A
9.500
GF95A
9.600
GF96A
9.700
GF97A
9.800
GF98A
9.900
GF99A
10.000
GF100A
Style
See
Page
150
11346
11348
11350
11352
11354
11356
11358
11360
11362
11364
11366
11368
11370
11372
11374
11376
11378
11380
11382
11384
11386
11388
11390
11392
11394
11396
11398
11400
11402
11404
11406
11408
11410
11412
11414
11416
11418
11420
11422
11424
20 – 60 Teeth – A
61 – 66 Teeth – B
67 – 100 Teeth – C
.313
1.523
1.519
1.250
2.000
ORDER BY CATALOG NUMBER
OR ITEM CODE
CATALOG NO.
ITEM CODE
GFB10A
18506
Gear Catalog
19
®
CHANGE GEARS
141/2° PRESSURE ANGLE
8 DIAMETRAL PITCH
STEEL AND CAST IRON
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
No.
of
Teeth
8
DIAMETRAL PITCH
20
21
22
23
24
3 3
(2) 8 × 16 KEYWAYS
180° APART
1.250 FACE
PITCH
DIA. HUB
DIA.
1.375 BORE
REFERENCE PAGES
88 D.P.
D.P.
Alterations — 149
Horsepower Ratings — 43
Lubrication — 149
Materials — 150
Selection Procedure — 37
COMPOUND
STEEL BUSHINGS
These steel bushings have 2 keys, 180°
apart and fit bores of GH series change
gears with a slip fit. They are used to
mount two gears on one shaft (or stud)
and drive one from the other.
1.1245
1.1255
.375
1.698
1.694
1.375
2.50
ORDER BY CATALOG NUMBER
OR ITEM CODE
20
CATALOG NO.
ITEM CODE
GHB8A
18508
Gear Catalog
®
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
STEEL
2.500
–
GH20
2.625
–
GH21
2.750
–
GH22
2.875
–
GH23
3.000
–
GH24
CAST IRON
3.125
GH25B
3.250
GH26B
3.375
GH27B
3.500
GH28B
3.625
GH29B
3.750 2.06 GH30B
3.875
GH31B
4.000
GH32B
4.125
GH33B
4.250
GH34B
4.375
GH35B
4.500
GH36B
4.625
GH37B
4.750
GH38B
4.875
GH39B
5.000
GH40B
5.125 2.69 GH41A
5.250
GH42A
5.375
GH43A
5.500
GH44A
5.625
GH45A
5.750
GH46A
5.875
GH47A
6.000
GH48A
6.125
GH49A
6.250
GH50A
6.375
GH51A
6.500 3.12 GH52A
6.625
GH53A
6.750
GH54A
6.875
GH55A
7.000
GH56A
7.125
GH57A
7.250
GH58A
7.375 3.25 GH59A
7.500
GH60A
Pitch
Dia.
Hub
Dia.
Catalog
Number
Item
Code
Outside Dia. = Pitch Dia. +.250"
10198
10200
10202
10204
10206
11426
11428
11430
11432
11434
11436
11438
11440
11442
11444
11446
11448
11450
11452
11454
11456
11458
11460
11462
11464
11466
11468
11470
11472
11474
11476
11478
11480
11482
11484
11486
11488
11490
11492
11494
11496
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
CAST IRON
7.625
GH61A
7.750
GH62A
7.875
GH63A
8.000
GH64A
8.125
GH65A
8.250
GH66A
8.375
GH67A
8.500
GH68A
8.625
GH69A
8.750 3.25 GH70A
8.875
GH71A
9.000
GH72A
9.125
GH73A
9.250
GH74A
9.375
GH75A
9.500
GH76A
9.625
GH77A
9.750
GH78A
9.875
GH79A
10.000
GH80A
10.125
GH81A
10.250
GH82A
10.375
GH83A
10.500
GH84A
10.625
GH85A
10.750
GH86A
10.875
GH87A
11.000
GH88A
11.125 3.75 GH89A
11.250
GH90A
11.375
GH91A
11.500
GH92A
11.625
GH93A
11.750
GH94A
11.875
GH95A
12.000
GH96A
12.125
GH97A
12.250
GH98A
12.375
GH99A
12.500
GH100A
Style
See
Page
150
11498
11500
11502
11504
11506
11508
11510
11512
11514
11516
11518
11520
11522
11524
11526
11528
11530
11532
11534
11536
11538
11540
11542
11544
11546
11548
11550
11552
11554
11556
11558
11560
11562
11564
11566
11568
11570
11572
11574
11576
20 – 49 Teeth – A
50 – 57 Teeth – B
58 – 68 Teeth – C
69 – 100 Teeth – D
STEM PINIONS
141/2° PRESSURE ANGLE
20 THROUGH 6 DIAMETRAL PITCH
STEEL
(Will not operate with 20° spurs)
Boston Gear Stem Pinions feature small numbers of teeth cut integral on a steel
shaft. Undercutting of the teeth is minimized by the use of special enlarged Pitch
Diameters. When run with standard stock spur gears, they provide high ratios
not normally found in spur gear drives. They are not intended to be operated
with each other, with internal gears or with 11 tooth pinions, but will run satisfactorily with all other standard 141⁄2° Pressure Angle spur gears.
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Pitch
Dia.*
Stem
Dia.
Stem
Length
Overall
Length
Catalog
Number
.375
.375
.500
.625
2.875
2.875
3.375
3.375
4.500
4.500
5.000
5.000
NAR5
NAR6
NAR8
NAR10
.4375
.500
.625
.750
3.125
3.125
3.375
3.375
5.000
5.000
5.250
5.250
.625
.625
.750
.875
1.000
4.375
4.375
4.375
4.375
4.375
7.250
7.250
7.250
7.250
7.250
.750
.750
.875
1.000
1.125
4.375
4.375
4.375
4.375
4.375
7.500
7.500
7.500
7.500
7.500
.875
1.000
1.125
1.125
1.500
4.375
4.375
4.375
4.375
4.375
7.750
7.750
7.750
7.750
7.750
20
DIAMETRAL PITCH
PITCH
DIA
(SPL)
OVERALL LENGTH
FACE
5
6
8
10
STEM LENGTH
STEM
DIA
STANDARD TOLERANCES
DIMENSION
STEM DIA.
All
TOLERANCE
+.0000 – .0015
.287
.335
.430
.525
FACE = 1.125"
16
DIAMETRAL PITCH
5
6
8
10
.359
.419
.537
.656
DIAMETRAL PITCH
.479
.558
.637
.716
.875
DIAMETRAL PITCH
.575
.670
.765
.860
1.050
DIAMETRAL PITCH
.718
.837
.956
1.075
1.312
DIAMETRAL PITCH
.958
1.116
1.433
1.750
NDR5
NDR6
NDR7
NDR8
NDR10
09734
09736
09738
09740
09742
NFR5
NFR6
NFR7
NFR8
NFR10
09768
09770
09772
09774
09776
FACE = 2.500"
6
5
6
8
10
09696
09698
09700
09702
FACE = 2.250"
8
5
6
7
8
10
NBR5
NBR6
NBR8
NBR10
FACE = 2.000"
10
5
6
7
8
10
09654
09656
09658
09660
FACE = 1.375"
12
5
6
7
8
10
Item
Code
NHR5
NHR6
NHR7
NHR8
NHR10
09796
09798
09800
09802
09804
FACE = 3.000"
1.250
1.375
1.625
2.000
4.375
4.375
5.000
5.375
8.500
8.500
9.000
9.500
NJR5
NJR6
NJR8
NJR10
09822
09824
09826
09828
*Used for calculating Center Distance, not ratio.
Gear Catalog
21
®
DRAWN PINION WIRE
141/2° PRESSURE ANGLE
48, 32 AND 24 DIAMETRAL PITCH
BRASS AND STEEL
(Will not operate with 20° spurs)
ORDER BY CATALOG NUMBER
OR ITEM CODE
No. of
Teeth
Pitch
Dia.
Catalog
Number
Item
Code
48
DIAMETRAL PITCH
Drawn Pinion Wire, teeth not generated.
All Pinion Wire is stocked in 4 foot
pieces. Other lengths can be furnished
on special order. Price on application.
6
8
9
10
12
14
15
16
18
.125
.167
.188
.208
.250
.292
.312
.333
.375
6
8
9
10
12
14
15
16
18
.125
.167
.188
.208
.250
.292
.312
.333
.375
BRASS
G24
G25
G26
G27
G29
G30
G31
G32
G33
STEEL
GS24
GS25
GS26
GS27
GS29
GS30
GS31
GS32
GS33
36900
36902
36904
36906
36908
36910
36912
36914
36916
36954
36956
36958
36960
36962
36964
36966
36968
36970
32
DIAMETRAL PITCH
6
8
9
10
11
12
14
15
16
.188
.250
.281
.312
.344
.375
.438
.469
.500
6
8
9
10
11
12
14
15
16
.188
.250
.281
.312
.344
.375
.438
.469
.500
BRASS
G39
G40
G41
G42
G43
G44
G45
G46
G47
STEEL
GS39
GS40
GS41
GS42
GS43
GS44
GS45
GS46
GS47
36918
36920
36922
36924
36926
36928
36930
36932
36934
36972
36974
36976
36978
36980
36982
36984
36986
36988
24
DIAMETRAL PITCH
22
Gear Catalog
®
6
9
10
12
14
15
16
.250
.375
.417
.500
.583
.625
.667
6
8
9
10
11
12
14
15
16
.250
.333
.375
.417
.458
.500
.583
.625
.667
BRASS
G54
G56
G57
G59
G60
G61
G62
STEEL
GS54
GS55
GS56
GS57
GS58
GS59
GS60
GS61
GS62
36936
36940
36942
36946
36948
36950
36952
36990
36992
36994
36996
36998
37000
37002
37004
37006
RACK
141/2° PRESSURE ANGLE
48 THROUGH 3 DIAMETRAL PITCH
NYLON AND STEEL
(Will not operate with 20° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Pitch Nom- Mating
Nylon
Steel
Overall Line
inal
Spur
Thick- to Back Length Gear Catalog Item Catalog Item
ness
(B)
(Feet) Page # Number Code Number Code
48 DIAMETRAL PITCH
FACE WIDTH = .125"
1
2
32 DIAMETRAL PITCH
.125
1
2
7,8
4
20 DIAMETRAL PITCH
GP579-1 53901
–
–
–
–
L505-2 12732
–
–
L505-4 12734
FACE WIDTH = .375"
OVERALL
THICKNESS
STANDARD TOLERANCES ‡
DIMENSION
LENGTH†
FACE
WIDTH
All
1/8 – 3/4
1 – 1-1/2
1-3/4 – 2
3
+ 1.00 – .000
+ .000 – .002
+ .000 – .003
+ .000 – .004
+ .000 – .006
†Ends not machined. Tolerance allows for cutting and
matching. Nylon Rack is molded in proper lengths to
permit end to end butting without interruption of tooth
spacing.
‡Steel only.
–
L509-2 12736
–
L509-4 12738
–
L509-6 12740
*FACE WIDTH = .313"
2
4
9,10
4
.500
.438
6
12 DIAMETRAL PITCH
–
–
–
–
–
L510-2 12742
–
L510-4 12744
–
L512-4 12746
–
L512-6 12748
FACE WIDTH = .750"
4
6
10,11
.750
.667
4
6
10 DIAMETRAL PITCH
–
–
–
–
–
L514-4 12750
–
L514-6 12752
–
L515-4 12754
–
L515-6 12756
FACE WIDTH = 1.000"
4
6
11,12
4
1.000
.900
6
8 DIAMETRAL PITCH
–
–
–
–
–
L516-4 37324
–
L516-6 37326
–
L517-4 37328
–
L517-6 37330
FACE WIDTH = 1.250"
4
6
12,13
4
1.250 1.125
6
6 DIAMETRAL PITCH
–
–
–
–
–
L518-4 37332
–
L518-6 37334
–
L519-4 37336
–
L519-6 37338
FACE WIDTH = 1.500"
4
6
13,14
4
1.500 1.333
6
5 DIAMETRAL PITCH
–
–
–
–
–
L520-4 37340
–
L520-6 37342
–
L521-4 37344
–
L521-6 37346
FACE WIDTH = 1.750"
14
–
–
–
L522-4 37348
–
L522-6 37350
FACE WIDTH = 2.000"
15
–
–
–
L523-4 37352
–
L523-6 37354
FACE WIDTH = 3.000"
15
–
–
–
–
.312
.625
.750
1.000
PITCH DIA
OF GEAR
(D)
GEAR
CENTER LINE
TO BACK OF RA
B+D
2
FACE
WIDTH
CK
LENGTH
PITCH LINE
TO BACK
(B)
OVERALL
THICKNESS
4
3
Alterations — 149
Lubrication — 149
Materials — 150
.325
.250
.417
.525
.625
.833
4
6
DIAMETRAL PITCH
1.250
1.050
4
6
DIAMETRAL PITCH
1.500
REFERENCE PAGES
.208
–
–
–
.500
TOLERANCE
.156
2
4
8,9
6
16 DIAMETRAL PITCH
.375
LENGTH
GP586-1 53899
–
–
–
–
L501-2 12726
FACE WIDTH = .188"
GP583-1 53900
–
–
–
–
L503-2 12728
–
–
L503-4 12730
FACE WIDTH = .250"
.250
WIDTH
6
1
2
6,7
4
24 DIAMETRAL PITCH
.188
PITCH LINE
TO BACK
(B)
.104
1.500
1.250
1.167
4
6
L524-4
L524-6
37356
37358
*Face Width of L512-4 and L512-6 = 1/2".
Gear Catalog
23
®
INTERNAL GEARS
141/2° PRESSURE ANGLE
48 THROUGH 16 DIAMETRAL PITCH
BRASS
(Will not operate with 20° spurs)
ORDER BY CATALOG NUMBER
OR ITEM CODE
No. of
Teeth
Pitch
Dia.
O.D.
I.D.
Catalog
Number
1.500
2.000
2.750
3.750
.986
1.486
1.986
2.986
G632
G633
G635
G637
2.000
2.750
3.750
4.750
6.750
1.480
1.980
2.980
3.980
5.980
G664
G666
G668
G669
G670
2.250
2.750
3.750
4.750
6.750
1.474
1.974
2.974
3.974
5.974
G675
G677
G679
G680
G681
2.750
3.750
4.750
6.750
1.962
2.962
3.962
5.962
G689
G691
G692
G693
Item
Code
48
DIAMETRAL PITCH
48
72
96
144
1.000
1.500
2.000
3.000
FACE = .125"
12066
12068
12070
12072
32
DIAMETRAL PITCH
48
64
96
128
192
FACE
1.500
2.000
3.000
4.000
6.000
FACE = .188"
12056
12058
12060
12062
12064
24
DIAMETRAL PITCH
PITCH
DIA.
OUTSIDE
DIA.
INSIDE
DIA.
36
48
72
96
144
1.500
2.000
3.000
4.000
6.000
FACE = .250"
12046
12048
12050
12052
12054
16
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
48 Pitch
I.D.
32 Pitch
24 Pitch
16 Pitch
O.D.
All
All
All
All
All
TOLERANCE
+.004 – .000
+.005 – .000
+.006 – .000
+.008 – .000
+.001 + .003
32
48
64
96
2.000
3.000
4.000
6.000
FACE = .313"
PINION
PITCH DIA.
(d)
CENTER DISTANCE
GEAR
PITCH DIA.
(D)
CENTER = D – d
DISTANCE
2
NOTE: The difference in tooth numbers between Gear and Pinion
should not be less than 15.
24
Gear Catalog
®
12038
12040
12042
12044
SPUR GEARS
64 AND 48 DIAMETRAL PITCH
DELRIN AND BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
150
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .033"
Overall Length = .125" + Hub Proj.
64
DIAMETRAL PITCH
BRASS
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
48 D.P.
48
64D.P.
DP
48 D.P.
REFERENCE PAGES
Alterations — 149
Lubrication — 149
Materials — 150
16
18
20
24
28
32
36
40
44
48
52
56
60
64
72
80
88
96
112
128
144
160
192
.250
.281
.312
.375
.438
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.125
1.250
1.375
1.500
1.750
2.000
2.250
2.500
3.000
.125
.1875
.250
.3125
64 DP
64 D.P.
.19
.25
A
.25
.31
C
Y6416
Y6418
Y6420
Y6424
Y6428
Y6432
Y6436
Y6440
Y6444
Y6448
Y6452
Y6456
Y6460
Y6464
Y6472
Y6480
Y6488
Y6496
Y64112
Y64128
Y64144
Y64160
Y64192
09482
09484
09486
09488
09490
09492
09494
09496
09498
09500
09502
09504
09506
09508
09510
09512
09514
09516
09518
09520
09522
09524
09526
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
MOLDED DELRIN
TOLERANCE
±.0005
.19
.22
.25
.28
.34
.38
.44
.44
.50
.50
.56
.56
.62
.62
.69
.69
.75
.75
.81
.88
.75
.75
.88
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
42
.375
.396
.417
.438
.458
.479
.500
.521
.542
.562
.583
.604
.625
.646
.667
.688
.708
.729
.750
.771
.792
.813
.833
.875
.31
.34
.38
.1562
.41
.25
.45
.48
.50
.1875
.55
A
.25
YP4818
YP4819
YP4820
YP4821
YP4822
YP4823
YP4824
YP4825
YP4826
YP4827
YP4828
YP4829
YP4830
YP4831
YP4832
YP4833
YP4834
YP4835
YP4836
YP4837
YP4838
YP4839
YP4840
YP4842
53902
53903
53904
53905
53906
53907
53908
53909
53910
53911
53912
53913
53914
53915
53916
53917
53918
53919
53920
53921
53922
53923
53924
53925
(continued next page)
Gear Catalog
25
®
SPUR GEARS
48 DIAMETRAL PITCH
DELRIN
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
150
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew †
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
MOLDED DELRIN
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES*
DIMENSION
BORE
TOLERANCE
All
+.001 – .000
*Gears with Brass Inserts only.
48 D.P.
48 D.P.
REFERENCE PAGES
Alterations — 149
Materials — 150
†All YPB gears have setscrews.
BORE
SETSCREW
1/8
#2-56
3/16
#4-40
1/4
#6-32
44
45
48
52
54
56
60
64
66
72
80
84
96
100
108
120
.917
.938
1.000
1.083
1.125
1.168
1.250
1.333
1.375
1.500
1.667
1.750
2.000
2.083
2.250
2.500
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
42
44
45
48
52
54
56
60
64
66
72
80
84
96
100
108
120
.375
.396
.417
.438
.458
.479
.500
.521
.542
.562
.583
.604
.625
.646
.667
.688
.708
.729
.750
.771
.792
.813
.833
.875
.917
.938
1.000
1.083
1.125
1.168
1.250
1.333
1.375
1.500
1.667
1.750
2.000
2.083
2.250
2.500
YP4844
YP4845
YP4848
YP4852
YP4854
YP4856
YP4860
YP4864
.250
.61
.25
B
YP4866
YP4872
YP4880
YP4884
YP4896
YP48100
YP48108
YP48120
MOLDED DELRIN WITH BRASS INSERTS
.188
.55
.31
.34
.125
.38
.40
.45
.48
.50
A
.188
.55
.250
.25
.61
(continued next page)
26
Gear Catalog
®
B
YPB4818
YPB4819
YPB4820
YPB4821
YPB4822
YPB4823
YPB4824
YPB4825
YPB4826
YPB4827
YPB4828
YPB4829
YPB4830
YPB4831
YPB4832
YPB4833
YPB4834
YPB4835
YPB4836
YPB4837
YPB4838
YPB4839
YPB4840
YPB4842
YPB4844
YPB4845
YPB4848
YPB4852
YPB4854
YPB4856
YPB4860
YPB4864
YPB4866
YPB4872
YPB4880
YPB4884
YPB4896
YPB48100
YPB48108
YPB48120
53926
53927
53928
53929
53930
53931
53932
53933
53934
53935
53936
53937
53938
53939
53940
53941
53942
53943
53944
53945
53946
53947
53948
53949
53950
53951
53952
53953
53954
53955
53956
53957
53958
53959
53960
53961
53962
53963
53964
53965
53966
53967
53968
53969
53970
53971
53972
53973
53974
53975
53976
53977
53978
53979
53980
53981
SPUR GEARS
48 AND 32 DIAMETRAL PITCH
DELRIN AND BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
150
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew
Catalog
Item
Number
Code
Face = .125"
Outside Dia. = Pitch Dia. + .042"
Overall Length = .125" + Hub Proj.
48
DIAMETRAL PITCH
BRASS
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
12
15
18
21
24
27
30
36
42
48
54
60
66
72
84
96
120
144
192
.250
.312
.375
.438
.500
.562
.625
.750
.875
1.000
1.125
1.250
1.375
1.500
1.750
2.000
2.500
3.000
4.000
.125
.1875
.250
.3125
.18
.22
.28
.35
.38
.44
.44
.50
.57
.63
.69
.69
.75
.75
.82
.88
.75
.88
1.00
.19
.25
A
.25
.31
C
Y4812
Y4815
Y4818
Y4821
Y4824
Y4827
Y4830
Y4836
Y4842
Y4848
Y4854
Y4860
Y4866
Y4872
Y4884
Y4896
Y48120
Y48144
Y48192
09444
09446
09448
09450
09452
09454
09456
09458
09460
09462
09464
09466
09468
09470
09472
09474
09476
09478
09480
Face = .188"
Outside Dia. = Pitch Dia. + .062"
Overall Length = .188" + Hub Proj.
32
DIAMETRAL PITCH
MOLDED DELRIN
STANDARD
TOLERANCES*
DIMENSION
BORE
All
TOLERANCE
±.0005˜
*Brass only.
48 D.P.
3248
D.P.D.P.
48 D.P.
REFERENCE PAGES
Alterations — 149
Lubrication — 149
Materials — 150
32 D.P.
32 D.P.
12
14
15
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
48
52
56
64
72
80
96
.375
.438
.469
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.062
1.125
1.187
1.250
1.312
1.375
1.500
1.625
1.750
2.000
2.250
2.500
3.000
.1562
.28
.31
.31
.31
.34
.47
A
.50
.1875
.250
.56
.50
.56
.63
.61
.31
.31
.63
B
.67
.3125
.31
.81
YP3212
YP3214
YP3215
YP3216
YP3218
YP3220
YP3222
YP3224
YP3226
YP3228
YP3230
YP3232
YP3234
YP3236
YP3238
YP3240
YP3242
YP3244
YP3248
YP3252
YP3256
YP3264
YP3272
YP3280
YP3296
53982
53983
53984
53985
53986
53987
53988
53989
53990
53991
53992
53993
53994
53995
53996
53997
53998
53999
54000
54001
54002
54003
54004
54005
54006
(continued next page)
Gear Catalog
27
®
SPUR GEARS
32 DIAMETRAL PITCH
DELRIN AND BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew †
Catalog
Item
Number
Code
Style
See
Page
150
Face = .188"
Outside Dia. = Pitch Dia. + .062"
Overall Length = .188" + Hub Proj.
32
DIAMETRAL PITCH
MOLDED DELRIN with BRASS INSERTS
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
TOLERANCE
Brass
BORE
All
± .0005
Delrin with Brass Inserts
BORE
All
+ .001 – .000
32 D.P.
32 D.P.
REFERENCE PAGES
Alterations — 149
Lubrication — 149
Materials — 150
†All YPB gears have setscrew and spot drill.
28
BORE
SETSCREW
1/8
#2-56
3/16
#4-40
1/4
#6-32
5/16
#8-32
Gear Catalog
®
12
14
15
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
48
52
56
64
72
80
96
.375
.438
.469
.500
.562
.625
.688
.750
.812
.875
.938
1.000
1.062
1.125
1.187
1.250
1.312
1.375
1.500
1.625
1.750
2.000
2.250
2.500
3.000
12
14
16
18
20
24
28
32
36
40
48
56
64
72
80
96
112
128
160
.375
.438
.500
.562
.625
.750
.875
1.000
1.125
1.250
1.500
1.750
2.000
2.250
2.500
3.000
3.500
4.000
5.000
.125
.1875
.250
.3125
.125
.1875
.250
.3125
.28
.31
.31
.34
.34
.47
.50
.50
.56
.50
.56
.63
.31
.61
.61
.61
.61
.61
.61
.63
.67
.67
.67
.81
.81
.81
BRASS
.28
.34
.40
.43
.47
.53
.59
.66
.72
.72
.78
.84
.90
.88
.88
1.00
1.00
1.00
1.00
A
B
.25
.25
A
.25
.25
.31
C
YPB3212
YPB3214
YPB3215
YPB3216
YPB3218
YPB3220
YPB3222
YPB3224
YPB3226
YPB3228
YPB3230
YPB3232
YPB3234
YPB3236
YPB3238
YPB3240
YPB3242
YPB3244
YPB3248
YPB3252
YPB3256
YPB3264
YPB3272
YPB3280
YPB3296
54007
54008
54009
54010
54011
54012
54013
54014
54015
54016
54017
54018
54019
54020
54021
54022
54023
54024
54025
54026
54027
54028
54029
54030
54031
Y3212
Y3214
Y3216
Y3218
Y3220
Y3224
Y3228
Y3232
Y3236
Y3240
Y3248
Y3256
Y3264
Y3272
Y3280
Y3296
Y32112
Y32128
Y32160
09406
09408
09410
09412
09414
09416
09418
09420
09422
09424
09426
09428
09430
09432
09434
09436
09438
09440
09442
SPUR GEARS
24 DIAMETRAL PITCH
DELRIN
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style
See
Page
150
Hub
Pitch
Dia.
Bore
Dia.
Proj.
Without Keyway
or Setscrew†
Catalog
Item
Number
Code
Face = .250"
Outside Dia. = Pitch Dia. + .083"
Overall Length = .250" + Hub Proj.
24
DIAMETRAL PITCH
MOLDED DELRIN
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES*
DIMENSION
BORE
TOLERANCE
All
+.001 – .000
*Gears with Brass Inserts only.
24 D.P.
24 D.P.
REFERENCE PAGES
Alterations — 149
Materials — 150
†All YPB gears have setscrew and spot drill.
BORE
SETSCREW
3/16
#4-40
1/4
#6-32
5/16
#8-32
12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
32
33
34
36
39
40
42
44
45
48
50
52
54
56
60
.500
.583
.625
.667
.709
.750
.791
.833
.875
.917
.959
1.000
1.041
1.083
1.125
1.167
1.250
1.333
1.375
1.416
1.500
1.625
1.666
1.750
1.833
1.875
2.000
2.083
2.166
2.250
2.333
2.500
12
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
30
32
33
34
36
39
40
42
.500
.583
.625
.667
.709
.750
.791
.833
.875
.917
.959
1.000
1.041
1.083
1.125
1.167
1.250
1.333
1.375
1.416
1.500
1.625
1.666
1.750
.38
.44
YP2412
YP2414
YP2415
.48
YP2416
YP2417
.188
A
YP2418
YP2419
.55
YP2420
YP2421
YP2422
YP2423
.63
YP2424
.61
YP2425
YP2426
YP2427
.63
.250
YP2428
.31
YP2430
YP2432
.61
YP2433
YP2434
.63
YP2436
B
YP2439
YP2440
YP2442
YP2444
YP2445
.313
.67
YP2448
YP2450
YP2452
YP2454
YP2456
YP2460
MOLDED DELRIN WITH BRASS INSERTS
.38
.44
.48
.188
A
.55
.31
.63
.61
.250
.63
B
.61
.63
.313
.67
YPB2412
YPB2414
YPB2415
YPB2416
YPB2417
YPB2418
YPB2419
YPB2420
YPB2421
YPB2422
YPB2423
YPB2424
YPB2425
YPB2426
YPB2427
YPB2428
YPB2430
YPB2432
YPB2433
YPB2434
YPB2436
YPB2439
YPB2440
YPB2442
54032
54033
54034
54035
54036
54037
54038
54039
54040
54041
54042
54043
54044
54045
54046
54047
54048
54049
54050
54051
54052
54053
54054
54055
54056
54057
54058
54059
54060
54061
54062
54063
54064
54065
54066
54067
54068
54069
54070
54071
54072
54073
54074
54075
54076
54077
54078
54079
54080
54081
54082
54083
54084
54085
54086
54087
(continued next page)
Gear Catalog
29
®
SPUR GEARS
24 AND 20 DIAMETRAL PITCH
DELRIN, BRASS, STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .250"
Outside Dia. = Pitch Dia. + .083"
DIAMETRAL PITCH
Overall Length = .250" + Hub Proj.
MOLDED DELRIN WITH BRASS INSERTS
44
1.833
YPB2444 54088
–
–
45
1.875
YPB2445 54089
–
–
48
2.000
YPB2448 54090
–
–
50
2.083
YPB2450 54091
–
–
.3125
.67
.31
B
52
2.166
YPB2452 54092
–
–
54
2.250
YPB2454 54093
–
–
56
2.333
YPB2456 54094
–
–
60
2.500
YPB2460 54095
–
–
BRASS
12
.500
.38
Y2412
09372
–
–
15
.625
.50
Y2415
09374
–
–
.1875
.25
18
.750
.54
Y2418
09376
–
–
24
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
TOLERANCE
Brass, Steel and Cast Iron
BORE
All
± .0005
Delrin with Brass Inserts
BORE
All
+ .001 – .000
24 D.P.
24D.P.
D.P.
20
24 D.P.
20 D.P.
20 D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 46
Lubrication — 149
Materials — 150
Selection Procedure — 37
†YPB gears have one setscrew (#8-32), no keyway.
*5/16" bore have #35 (.110) drilled hole
through one wall, no keyway.
‡3/8" bore have one setscrew.
No keyway.
1/2" bore and larger have standard
keyway at 90° to setscrew.
See Page 150.
30
Gear Catalog
®
21
24
27
30
36
42
48
54
60
72
84
96
120
144
.875
1.000
1.125
1.250
1.500
1.750
2.000
2.250
2.500
3.000
3.500
4.000
5.000
6.000
.250
.3125
.60
.66
.73
.73
.79
.86
.92
.88
.88
A
.25
.25
.31
.31
.375
C
1.00
.38
20
DIAMETRAL PITCH
Y2421
09378
–
–
Y2424
09380
–
–
Y2427
09382
–
–
Y2430
09384
–
–
Y2436
09386
–
–
Y2442
09388
–
–
Y2448
09390
–
–
Y2454
09392
–
–
Y2460
09394
–
–
Y2472
09396
–
–
Y2484
09398
–
–
Y2496
09400
–
–
Y24120 09402
–
–
Y24144 09404
–
–
Face = .500"
Outside Dia. = Pitch Dia. + .100"
Overall Length = .500" + Hub Proj.
STEEL
12
14
15
16
18
20
24
25
30
35
.600
.700
.750
.800
.900
1.000
1.200
1.250
1.500
1.750
40
2.000
.500
.625
.750
1.72
45
50
60
70
2.250
2.500
3.000
3.500
.500
1.97
1.62
2.12
2.38
80
84
90
100
120
140
160
180
200
4.000
4.200
4.500
5.000
6.000
7.000
8.000
9.000
10.000
.625
1.38
.625
1.50
.625
1.75
.3125
.375
.500
.46
.56
.60
.66
.74
.84
.92
.97
1.22
1.47
YA12
YA14
YA15
.44
YA16
YA18
YA20
YA24
.44
A YA25
YA30
.50
YA35
YA40
.50
–
–
YA45
YA50A
.50
YA60A
YA70A
CAST IRON
C YA80
.62
B YA84
YA90
C
YA100
YA120
.62
YA140
D YA160
YA180
.75
YA200
.44
09892
09894
09896
09898
09900
09902
09914
09904
09906
09908
09910
–
–
09912
10548
10550
10552
YA12-5/16*
YA14-5/16*
YA15-3/8‡
YA16-3/8‡
YA18-3/8‡
YA20-1/2
YA24-1/2
YA25-1/2
YA30-1/2
YA35-1/2
YA40-1/2
YA40-5/8
YA40-3/4
–
–
–
–
46128
46129
46130
46131
46132
46133
46134
46135
46136
46137
46138
46139
46140
–
–
–
–
10554
10556
10558
10560
10562
10564
10566
10568
10570
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
SPUR GEARS
16 AND 12 DIAMETRAL PITCH
STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = .750"
Outside Dia. = Pitch Dia. + .125"
Overall Length = .750" + Hub Proj.
16
DIAMETRAL PITCH
STEEL
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
16 D.P.
TOLERANCE
±.0005
16 D.P.
12 D.P.
12 D.P. 12 D.P.
16 D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 46, 47
Lubrication — 149
Materials — 150
Selection Procedure — 37
†3/8" bore have one setscrew.
No keyway.
YB15-1/2 and larger have standard
keyway at 90° to setscrew.
See page 150.
*YD12-1/2 has one setscrew.
No keyway.
‡YD13-5/8 has one setscrew.
No keyway.
YD14-5/8 bore and larger have standard
keyway at 90° to setscrew.
12
14
.750
.875
.375
.56
.69
.50
15
.938
.375
.500
.75
.50
16
18
20
1.000
1.125
1.250
.500
.81
.94
1.05
.50
24
1.500
1.20
.50
28
1.750
1.45
.50
30
1.875
1.58
.50
32
2.000
36
40
48
56
60
64
72
80
2.250
2.500
3.000
3.500
3.750
4.000
4.500
5.000
96
128
144
160
192
6.000
8.000
9.000
10.000
12.000
.625
.625
.750
.625
.750
.625
.750
.875
.625
.750
.875
1.000
.625
.750
YB12
YB14
YB15
–
YB16
YB18
YB20
YB24
–
YB28
–
YB30
–
–
YB32
–
–
–
YB36
YB40
YB48A
YB56A
YB60A
YB64A
YB72A
YB80A
.50
A
1.70
.50
1.95
2.20
2.00
2.50
2.75
2.88
3.38
3.88
.50
.62
.75
09916
09918
09920
–
09922
09924
09926
09928
–
09930
–
09932
–
–
09934
–
–
–
09936
09938
10572
10574
10576
10578
10580
10582
YB12-3/8†
YB14-3/8†
YB15-3/8†
YB15-1/2
YB16-1/2
YB18-1/2
YB20-5/8
YB24-5/8
YB24-3/4
YB28-5/8
YB28-3/4
YB30-5/8
YB30-3/4
YB30-7/8
YB32-5/8
YB32-3/4
YB32-7/8
YB32-1
–
–
–
–
–
–
–
–
46141
46142
45991
46143
46144
46145
46146
46147
46148
46149
46150
46151
46152
46153
46154
46155
46156
46157
–
–
–
–
–
–
–
–
CAST IRON
.750
1.75
2.00
2.00
.75
.875
2.00
.75
1.00
.75
.83
.92
.99
1.07
1.24
1.32
.62
.62
1.40
.62
1.65
.62
1.99
.62
D
12
DIAMETRAL PITCH
YB96
10584
–
–
YB128 10588
–
–
YB144 10590
–
–
YB160 10592
–
–
YB192 10594
–
–
Face = 1.000"
Outside Dia. = Pitch Dia. + .167"
Overall Length = 1.000" + Hub Proj.
STEEL
12
13
14
15
16
18
20
1.000
1.083
1.167
1.250
1.333
1.500
1.667
21
1.750
24
2.000
28
2.333
30
36
42
48
54
2.500
3.000
3.500
4.000
4.500
.500
.625
.750
.750
.875
.750
.875
1.000
.750
.875
1.000
.750
.875
2.15
1.94
2.44
2.88
3.38
.62
.62
.88
.88
A
YD12
YD13
YD14
YD15
YD16
YD18
YD20
YD21
–
YD24
–
–
YD28
–
–
YD30
YD36A
YD42A
YD48A
YD54A
09940
09942
09944
09946
09948
09950
09952
09954
–
09956
–
–
09958
–
–
09960
10596
10598
10600
10602
Gear Catalog
YD12-1/2*
YD13-5/8‡
YD14-5/8
YD15-5/8
YD16-5/8
YD18-3/4
YD20-3/4
YD21-3/4
YD21-7/8
YD24-3/4
YD24-7/8
YD24-1
YD28-3/4
YD28-7/8
YD28-1
–
–
–
–
–
46158
46159
46160
46161
46162
46163
46164
46165
46166
46167
46168
46169
46170
46171
46172
–
–
–
–
–
31
®
SPUR GEARS
12 AND 10 DIAMETRAL PITCH
CAST IRON AND STEEL
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
Face = 1.000"
Outside Dia. = Pitch Dia. + .166"
Overall Length = 1.000" + Hub Proj.
12
DIAMETRAL PITCH
60
66
72
84
96
108
120
132
144
168
192
216
HUB
PROJ.
FACE
5.000
5.500
6.000
7.000
8.000
9.000
10.000
11.000
12.000
14.000
16.000
18.000
.875
2.12
2.25
2.25
1.000
2.50
2.75
10
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
All
12 D.P.
TOLERANCE
±.0005
12 D.P.
10 D.P.
10 D.P.
12 D.P.
10 D.P.
DIAMETRAL PITCH
12
14
15
16
1.200
1.400
1.500
1.600
.625
18
1.800
20
2.000
24
2.400
25
2.500
28
2.800
.750
.875
.875
1.000
.875
1.000
.875
1.000
.875
1.000
30
35
40
45
48
50
3.000
3.500
4.000
4.500
4.800
5.000
55
60
70
80
90
100
120
140
160
200
5.500
6.000
7.000
8.000
9.000
10.000
12.000
14.000
16.000
20.000
.750
.875
1.000
.92
1.12
1.22
1.32
1.42
1.62
2.02
2.12
2.42
2.00
2.50
2.95
3.45
3.75
3.95
CAST IRON
B
YD60
10604
–
–
YD66
10606
–
–
.88
YD72
10608
–
–
YD84
10610
–
–
YD96
10612
–
–
YD108 10614
–
–
.88
D
YD120 10616
–
–
YD132 10618
–
–
YD144 10620
–
–
1.00
YD168 10622
–
–
YD192 10624
–
–
YD216 10626
–
–
Face = 1.250"
Outside Dia. = Pitch Dia. + .200"
Overall Length = 1.250" + Hub Proj.
STEEL
YF12
YF14
YF15
.62
YF16
YF18
.62
–
YF20
.62
–
A
YF24
.62
–
YF25
.62
–
YF28
.62
–
YF30A
.88
YF35A
YF40A
YF45A
.88
YF48A
YF50A
CAST IRON
.62
B
1.000
2.50
1.00
3.00
1.12
3.25
1.25
D
1.125
YF55
YF60
YF70
YF80
YF90
YF100
YF120
YF140
YF160
YF200B
†All gears have standard keyway at 90° to setscrew. See Page 150.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 47, 48
Lubrication — 149
Materials — 150
Selection Procedure — 37
32
Gear Catalog
®
With Keyway
and Setscrew†
Catalog
Item
Number
Code
09962
09964
09966
09968
09970
–
09972
–
09974
–
09976
–
09978
–
10630
10632
10634
10636
10638
10640
10642
10644
10646
10648
10650
10652
10656
10658
10660
10664
YF12-5/8
YF14-5/8
YF15-3/4
YF16-3/4
YF18-3/4
YF18-7/8
YF20-7/8
YF20-1
YF24-7/8
YF24-1
YF25-7/8
YF25-1
YF28-7/8
YF28-1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
46173
46174
46175
46176
46177
46178
46179
46180
46181
46182
46183
46184
46185
46186
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
SPUR GEARS
8 AND 6 DIAMETRAL PITCH
STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 1.500"
Outside Dia. = Pitch Dia. + .250"
Overall Length = 1.500" + Hub Proj.
8
DIAMETRAL PITCH
STEEL
HUB
PROJ.
FACE
PITCH
DIA.
STANDARD TOLERANCES
DIMENSION
1.500
1.750
.750
1.12
1.31
15
1.875
1.43
16
2.000
18
2.250
20
2.500
22
2.750
24
3.000
28
32
36
3.500
4.000
4.500
.750
.875
.875
1.000
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
1.125
.875
1.000
1.125
.875
40
44
48
56
60
64
72
80
88
96
112
120
128
5.000
5.500
6.000
7.000
7.500
8.000
9.000
10.000
11.000
12.000
14.000
15.000
16.000
HUB
DIA.
BORE
OVERALL
LENGTH
BORE
12
14
TOLERANCE
All
±.0005
1.000
1.000
1.56
1.81
2.06
2.31
2.56
3.06
3.00
3.50
2.50
YH12
YH14
YH15
.75
–
YH16
.88
–
YH18
.88
A
–
–
YH20
.88
–
–
YH22
.88
–
–
YH24
.88
–
–
.88
YH28
YH32C
.88
YH36C
CAST IRON
YH40B
B
YH44B
YH48B
1.00
YH56B
C
YH60
.75
3.00
1.125
D
1.25
3.25
6
DIAMETRAL PITCH
8 D.P.
8 D.P.
8 D.P.
YH12-3/4
YH14-3/4
YH15-3/4
YH15-7/8
YH16-7/8
YH16-1
YH18-7/8
YH18-1
YH18-1-1/8
YH20-7/8
YH20-1
YH20-1-1/8
YH22-7/8
YH22-1
YH22-1-1/8
YH24-7/8
YH24-1
YH24-1-1/8
–
–
–
46187
46188
46189
46190
46191
46192
46193
46194
46195
46196
46197
46198
46199
46200
46201
46202
46203
46204
–
–
–
10670
–
–
10672
–
–
10674
–
–
10676
–
–
10678
–
–
YH64B 10680
–
–
YH72B 10682
–
–
YH80B 10684
–
–
YH88B 10686
–
–
YH96B 10688
–
–
YH112B 10690
–
–
YH120 10692
–
–
YH128B 10694
–
–
Face = 2.000"
Outside Dia. = Pitch Dia. + .333"
Overall Length = 2.000" + Hub Proj.
STEEL
6 D.P.
6 D.P.
6 D.P.
09980
09982
09984
–
09986
–
09988
–
–
09990
–
–
09992
–
–
09994
–
–
09996
10666
10668
12
2.000
14
2.333
15
2.500
1.000
1.000
1.125
1.000
1.125
1.1875
1.250
1.46
.88
1.79
.88
1.96
.88
A
YJ12
YJ14
–
YJ15
–
–
–
09998
10000
–
10002
–
–
–
YJ12-1
YJ14-1
YJ14-1-1/8
YJ15-1
YJ15-1-1/8
YJ15-1-3/16
YJ15-1-1/4
46205
46206
46207
46208
46209
46210
46211
†All gears have standard keyway at 90° to setscrew. See Page 150.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 48, 49
Lubrication — 149
Materials — 150
Selection Procedure — 37
Gear Catalog
33
®
SPUR GEARS
6 AND 5 DIAMETRAL PITCH
STEEL AND CAST IRON
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No.
of
Teeth
Style Without Keyway
or Setscrew
See
Page Catalog Item
Proj. 150 Number Code
Hub
Pitch
Dia.
Bore
Dia.
With Keyway
and Setscrew†
Catalog
Item
Number
Code
Face = 2.000"
Outside Dia. = Pitch Dia. + .333"
Overall Length = 2.000" + Hub Proj.
6
DIAMETRAL PITCH
STEEL
HUB
PROJ.
FACE
PITCH
DIA.
HUB
DIA.
BORE
OVERALL
LENGTH
STANDARD TOLERANCES
DIMENSION
BORE
TOLERANCE
All
±.0005
16
2.667
18
3.000
21
3.500
24
27
30
4.000
4.500
5.000
33
36
42
48
54
60
66
72
84
96
108
120
5.500
6.000
7.000
8.000
9.000
10.000
11.000
12.000
14.000
16.000
18.000
20.000
1.000
1.125
1.1875
1.250
1.000
1.125
1.1875
1.250
1.000
1.125
1.1875
1.250
2.13
2.46
2.96
YJ16
–
–
–
YJ18
–
.88
–
–
A
YJ21
–
.88
–
–
YJ24A
.88
YJ27A
YJ30C
CAST IRON
.88
1.125
3.00
3.50
4.00
1.125
3.00
3.50
1.50
B
A
1.250
3.50
1.50
B
C
1.250
4.00
1.50
D
1.375
4.50
1.50
5
DIAMETRAL PITCH
10004
–
–
–
10006
–
–
–
10008
–
–
–
10704
10706
10708
YJ16-1
YJ16-1-1/8
YJ16-1-3/16
YJ16-1-1/4
YJ18-1
YJ18-1-1/8
YJ18-1-3/16
YJ18-1-1/4
YJ21-1
YJ21-1-1/8
YJ21-1-3/16
YJ21-1-1/4
–
–
–
46212
46213
46214
46215
46216
46217
46218
46219
46220
46221
46222
46223
–
–
–
YJ33B
10710
–
–
YJ36B
10712
–
–
YJ42B
10714
–
–
YJ48B
10716
–
–
YJ54B
10718
–
–
YJ60B
10720
–
–
YJ66B
10722
–
–
YJ72B
10724
–
–
YJ84B
10726
–
–
YJ96B
10728
–
–
YJ108B 10730
–
–
YJ120B 10732
–
–
Face = 2.500"
Outside Dia. = Pitch Dia. + .400"
Overall Length = 2.500" + Hub Proj.
STEEL
6 D.P.
6 D.P.
6 D.P.
5 D.P.
5 D.P.
5 D.P.
REFERENCE PAGES
Alterations — 149
Horsepower Ratings — 49, 50
Lubrication — 149
Materials — 150
Selection Procedure — 37
12
14
15
16
18
20
2.400
2.800
3.000
3.200
3.600
4.000
24
25
28
30
35
40
45
50
60
70
80
100
110
120
140
160
180
4.800
5.000
5.600
6.000
7.000
8.000
9.000
10.000
12.000
14.000
16.000
20.000
22.000
24.000
28.000
32.000
36.000
1.125
1.78
2.18
2.38
2.58
2.98
3.38
1.125
3.75
1.250
3.75
4.00
1.375
4.38
1.500
4.75
5.00
5.00
5.00
5.50
1.625
YK12
YK14
YK15
.88
A
YK16
YK18
YK20
CAST IRON
YK24
YK25B
1.25
A
YK28
YK30B
YK35B
B
YK40B
1.25
YK45B
C
YK50
YK60
1.50
YK70B
YK80B
YK100
1.75
D
YK110
YK120
YK140B
2.00
YK160B
YK180B
†All gears have standard keyway at 90° to setscrew. See Page 150.
34
Gear Catalog
®
10010
10012
10014
10016
10018
10020
–
–
–
–
–
–
–
–
–
–
–
–
10738
10740
10742
10744
10746
10748
10750
10752
10754
10756
10758
10762
10764
10766
10768
10770
10772
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
RACK
20 THROUGH 4 DIAMETRAL PITCH
STEEL
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
Overall
Thickness
Pitch Line Nominal
Mating
to Back
Length Spur Gear
(B)
(Feet)
Page No.
Steel
Catalog Item
Number Code
20
DIAMETRAL PITCH
.500
.450
FACE WIDTH - .500”
4
6
30
L2020-4 12758
L2020-6 12760
16
DIAMETRAL PITCHFACE WIDTH - .750”
4
.750
.688
31
6
L2016-4 12762
L2016-6 12764
12
DIAMETRAL PITCH
PITCH LINE
TO BACK
(B)
1.000
WIDTH
.917
FACE WIDTH - 1.000”
4
6
31 – 32
L2012-4 37320
L2012-6 37322
10
DIAMETRAL PITCH
1.250
1.150
FACE WIDTH - 1.250”
4
6
32
L2010-4 37316
L2010-6 37318
8
OVERALL
THICKNESS
LENGTH
DIAMETRAL PITCH
1.500
1.375
FACE WIDTH - 1.500”
4
6
33
L208-4
L208-6
37312
37314
6
DIAMETRAL PITCH
STANDARD TOLERANCES
DIMENSION
LENGTH†
All
1/2 – 3/4
FACE
1 – 1-1/2
WIDTH
2 – 2-1/2
3-1/2
1.500
TOLERANCE
+1.000 – .000
+.000 – .002
+.000 – .003
+.000 – .004
+.000 – .006
†Ends not machined. Tolerance allows for cutting and
matching.
33 – 34
L206-4
L206-6
37308
37310
5
DIAMETRAL PITCH
1.500
1.300
FACE WIDTH - 2.500”
4
6
34
L205-4
L205-6
37304
37306
4
DIAMETRAL PITCH
2.000
PITCH DIA
OF GEAR
(D)
1.333
FACE WIDTH - 2.000”
4
6
1.750
FACE WIDTH - 3.500”
4
6
–
L204-4
L204-6
37300
37302
FACE
WIDTH
GEAR
CENTER LINE
TO BACK OF RA
B+D
2
CK
OVERALL
THICKNESS
LENGTH
PITCH LINE
TO BACK
(B)
REFERENCE PAGES
Alterations — 149
Lubrication — 149
Materials — 150
Gear Catalog
35
®
INTERNAL GEARS
64 THROUGH 24 DIAMETRAL PITCH
BRASS
20° PRESSURE ANGLE
(Will not operate with 141⁄2° spurs)
ALL DIMENSIONS IN INCHES
ORDER BY CATALOG NUMBER OR ITEM CODE
No. of
Teeth
Pitch
Dia.
O.D.
I.D.
DIAMETRAL PITCH
64
1.000
96
1.500
128
2.000
192
3.000
1.500
2.000
2.750
3.750
.980
1.480
1.980
2.980
FACE WIDTH - .125”
YI6464
12030
YI6496
12032
YI64128
12034
YI64192
12036
1.500
2.000
2.750
3.750
4.750
.974
1.474
1.974
2.974
3.974
FACE WIDTH - .125”
YI4848
12020
YI4872
12022
YI4896
12024
YI48144
12026
YI48192
12028
2.000
2.750
3.750
4.750
6.750
1.461
1.961
2.961
3.961
5.961
FACE WIDTH - .188”
YI3248
12010
YI3264
12012
YI3296
12014
YI32128
12016
YI32192
12018
2.250
2.750
3.750
4.750
6.750
1.450
1.950
2.950
3.950
5.950
FACE WIDTH - .250”
YI2436
12000
YI2448
12002
YI2472
12004
YI2496
12006
YI24144
12008
64
48
DIAMETRAL PITCH
48
1.000
72
1.500
96
2.000
144
3.000
4.000
192
32
FACE
PITCH
DIA.
OUTSIDE
DIA.
INSIDE
DIA.
DIAMETRAL PITCH
48
1.500
64
2.000
96
3.000
128
4.000
192
6.000
24
DIAMETRAL PITCH
36
1.500
48
2.000
72
3.000
96
4.000
144
6.000
Catalog
Number
Item
Code
NOTE: The difference in tooth numbers between Gear and Pinion should not be less than 12.
STANDARD TOLERANCES
DIMENSION
64 Pitch
48 Pitch
I.D.
32 Pitch
24 Pitch
O.D.
All
All
All
All
All
TOLERANCE
+.004 – .000
+.005 – .000
+.006 – .000
+.008 – .000
+.001 + .003
PINION
PITCH DIA.
(d)
CENTER DISTANCE
GEAR
PITCH DIA.
(D)
CENTER = D – d
DISTANCE
2
36
Gear Catalog
®
SPUR GEARS
Boston spur gears are designed to transmit motion or power between parallel
shafts. Configurations include spur, rack, pinion wire, stem pinions and internal gears; most with a selection of bores, keyways and setscrews. Styles
include plain, web, web with lightening holes or spoked. Change gears have
consecutive numbers of teeth for reduction uses.
Boston fine-pitch spur gears are available in Delrin and Brass. Configurations
include spur, rack, pinion wire and internal gears; most with a selection of
bores, keyways, and setscrews. Styles include plain, web with lightening
holes or spoked.
SELECTION PROCEDURE
SELECTION HINTS
1. Determine service factor.
a. Using application Classification Chart, pages 152153, determine service factor or
b. With knowledge of operating conditions and load
classification, select service factor from Table 1
below.
A. Select pinion having pitch diameter at least twice the
shaft diameter.
B. Pinion number of teeth should be greater than 16 for
14 1⁄2°PA and 13 for 20°PA to avoid excessive undercutting.
C. For tooth numbers or RPMs not on Chart, interpolation of
horsepower is adequate.
Design HP = Application Load X Service Factor (Table 1)
3. Select spur gear pinion with horsepower capacity equal to
(or greater than) design horsepower determined in Step 2.
141⁄2° Pressure Angle Spur Gears—Page 38 to Page 45.
20° Pressure Angle Spur Gears— Page 46 to Page 50.
4. Select a driven spur gear with a catalog rating equal to or
greater than the horsepower determined in Step 2. All ratings are predicated on gears properly lubricated and
maintained.
D. Pitchline velocities above 1000 FPM are not recommended for metallic spur gears. The Selection Chart
reflects this in the lack of ratings for larger numbers of
teeth at higher RPM’s. Ratings to the right of heavy line
are not recommended, as suggested maximum velocity
is exceeded, and should be used for interpolation
purposes only.
TABLE 1
Service
Factor
.8
1.0
1.25
1.50
1.75
2.0
Operating Conditions
Uniform — not more than 15 minutes in 2 hours.
Moderate Shock — not more than 15 minutes in 2 hours.
Uniform — not more than 10 hours per day.
Moderate Shock — not more than 10 hours per day.
Uniform — more than 10 hours per day.
Heavy Shock — not more than 15 minutes in 2 hours.
Moderate Shock — more than 10 hours per day.
Heavy Shock — not more than 10 hours per day.
Heavy Shock — more than 10 hours per day.
Heavy shock loads and/or severe wear conditions may require
the use of higher service factors. Consultation with factory is
recommended in these applications.
Gear Catalog
37
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
32 DIAMETRAL PITCH STEEL
25 RPM
50 RPM
100 RPM
141⁄2° PRESSURE ANGLE
200 RPM
300 RPM
3/16" FACE
600 RPM
900 RPM
REFERENCE PAGE 7.
1200 RPM
1800 RPM
3600 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
16
18
20
22
24
26
28
30
32
40
48
56
64
80
96
128
160
192
.003
7.4
.003
8.9
.004 10.2
.005 11.7
.01
13.0
.01
14.5
.01
15.9
.01
17.3
.01
18.9
.01
24.5
.01
29.9
.01
35.7
.02
41.4
52.4
.02
.02
62.6
.03
83.9
.04 106
.05 126
.24
.27
.30
.32
.34
.37
.39
.40
.43
.48
.52
.55
.58
4.2
4.7
5.2
5.7
6.0
6.4
6.8
7.0
7.4
8.4
9.0
9.7
10.2
.01
7.3
.01
8.8
.01 10.2
.01 11.6
.01 12.9
.01 14.4
.01 15.1
.01 17.0
.01 18.7
.02 24.2
.02 29.4
.03 35
.03 40.6
.04 51
.05 60.6
.06 80.6
.08 101
.09 119
.01
7.3
.01
8.7
.02 10.1
.02 11.4
.02 12.7
.02 14.1
.02 15.5
.03 16.7
.03 18.3
.04 23.6
.05 28.5
.05 33.8
.06 38.9
.08 48.5
.09 57.1
.12 74.6
.15 92.1
.17 107
24 DIAMETRAL PITCH STEEL
25 RPM
50 RPM
100 RPM
.02
.03
.03
.04
.04
.04
.05
.05
.06
.07
.09
.10
.11
.14
.16
.21
.25
.28
7.1
8.5
9.8
11.1
12.3
13.7
14.9
16.1
17.6
22.4
26.8
31.5
36
44.2
51.2
64.9
78.2
88.4
.03
.04
.05
.05
.06
.06
.07
.07
.08
.10
.12
.14
.16
.19
.22
.27
.32
.36
7.0
8.3
9.6
10.8
11.9
13.3
14.5
15.5
16.9
21.3
25.4
29.6
33.5
40.6
46.4
57.5
67.8
75.4
.06
.07
.08
.09
.10
.12
.12
.13
.14
.18
.21
.24
.26
.31
.34
.41
.46
.50
6.6
7.8
8.9
9.9
10.9
12.0
13.1
13.9
15.2
18.7
21.8
24.9
27.8
32.5
36.2
42.7
48.6
52.4
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
.09
.10
.12
.13
.14
.16
.17
.18
.20
.24
.27
.31
.34
.39
.42
.49
.54
.57
6.3
7.3
8.3
9.3
10.1
11.1
12.0
12.7
13.7
16.7
19.1
21.6
23.7
27.2
29.6
34
37.9
40.1
.11
.13
.15
.16
.18
.20
.21
.22
.24
.29
.32
.36
.39
.44
.48
.54
5.9
6.9
7.8
8.7
9.4
10.2
11.0
11.7
12.6
15
17
18.9
20.7
23.3
25.1
28.3
1/4" FACE
600 RPM
900 RPM
.15
.18
.20
.22
.24
.26
.27
.29
.31
.36
.40
.44
.47
.52
.55
5.4
6.1
6.9
7.6
8.3
8.9
9.5
10.0
10.7
12.5
13.9
15.3
16.5
18.2
19.2
REFERENCE PAGE 8.
1200 RPM
1800 RPM
3600 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P. Torque
H.P.
Torque
12
14
15
16
18
20
21
24
30
36
42
48
60
72
96
120
144
.004
.01
.01
.01
.01
.01
.01
.01
.02
.02
.02
.03
.04
.04
.06
.07
.09
.22
.28
.31
.33
.38
.42
.45
.50
.60
.68
.74
.80
.89
.96
.35
.43
.46
.49
.55
.61
.63
.69
.80
.89
.94
.99
6.1
7.5
8.0
8.6
9.7
10.6
11.0
12.0
13.9
15.5
16.5
17.4
10.9
14.2
15.8
17.5
20.9
24.3
26.1
30.7
40.7
51.2
60.7
70.4
90
109
147
185
219
.01
.01
.01
.01
.02
.02
.02
.02
.03
.04
.05
.05
.07
.08
.11
.14
.16
10.8
14.1
15.7
17.4
20.7
24.1
25.8
30.4
40.2
50.4
59.6
68.9
87.7
106
141
175
207
.02
10.7
.02
13.9
.02
15.5
.03
17.2
.03
20.4
.04
23.7
.04
25.4
.05
29.7
.06
39.2
.08
48.8
.09
59.5
.11
66.2
.13
83.3
.16
99.8
.21 130
.25 159
.29 185
.03
10.5
.04
13.6
.05
15.1
.05
16.7
.06
19.8
.07
22.9
.08
24.5
.09
28.5
.12
37.2
.15
46
.17
53.6
.19
61.3
.24
75.9
.28
89.5
.36 113
.43 135
.49 153
.05
.06
.07
.08
.09
.11
.11
.13
.17
.21
.24
.27
.33
.39
.48
.56
.62
10.3
13.3
14.7
16.2
19.2
22.1
23.6
27.5
35.5
43.5
50.3
57
69.6
81
100
118
131
.09
.12
.13
.14
.17
.19
.20
.23
.30
.36
.40
.45
.53
.60
.71
.80
.86
9.7
12.4
13.7
15
17.6
20.1
21.4
24.6
31.1
37.3
42.4
47.2
55.9
63.2
74.7
84.3
90.8
.13
.17
.18
.20
.23
.26
.28
.32
.40
.47
.52
.58
.67
.74
.85
.94
.99
9.2
11.6
12.8
14
16.3
18.5
19.6
22.3
27.7
32.7
36.6
40.3
46.6
51.8
59.5
65.7
69.6
.17
.21
.23
.25
.29
.33
.34
.39
.48
.55
.61
.67
.76
.84
.94
1.07
8.7
10.9
12
13.1
15.1
17.1
18.1
20.4
24.9
29.1
32.3
35.1
40
43.9
49.5
56.4
7.9
9.8
10.7
11.6
13.3
14.8
15.6
17.4
20.8
23.9
26
28
31.2
33.6
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
* Torque Ratings (Lb. Ins.).
Ratings for brass gears are approximately 50% of steel ratings with same face width.
38
Gear Catalog
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
20 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
13
14
15
16
18
20
22
24
25
28
30
32
35
36
40
48
50
60
64
25 RPM
50 RPM
141⁄2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
3/8" FACE
600 RPM
900 RPM
REFERENCE PAGE 8.
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.01
.01
.01
.01
.01
.02
.02
.02
.02
.03
.03
.03
.03
.04
.04
.04
.05
.06
.06
.08
.08
.66
.70
.77
.84
.90
.97
1.08
1.18
1.26
1.33
1.38
1.47
1.52
1.59
1.66
1.68
1.75
11.6
12.2
13.4
14.7
15.8
16.9
18.9
20.6
22.1
23.3
24.0
25.7
26.6
27.8
29.1
29.3
30.7
21.6
23.5
26.9
30.7
34.2
37.8
45.1
52.4
59.5
66.3
70.5
81.2
87.8
96.3
107
110
124
151
158
193
209
.02
.02
.02
.02
.03
.03
.04
.04
.05
.05
.06
.06
.07
.08
.08
.09
.10
.12
.12
.15
.16
21.4
23.4
26.8
30.5
33.9
37.5
44.7
51.9
58.8
65.4
69.5
80
86.4
94.7
105
108
122
148
154
187
203
.03
.04
.04
.05
.05
.06
.07
.08
.09
.10
.11
.12
.13
.15
.16
.17
.19
.22
.23
.28
.30
21.2
23
26.4
30
33.4
36.8
43.8
50.8
57.5
63.8
67.7
77.7
83.7
91.6
101
104
117
141
146
176
190
.07
.07
.08
.09
.10
.11
.13
.15
.17
.19
.20
.23
.25
.27
.30
.31
.34
.41
.42
.50
.54
20 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
20.7
22.5
25.7
29.1
32.3
35.7
42.3
48.7
54.9
60.8
64.4
73.4
78.9
86
94.7
97.1
108
128
133
158
169
.10
.10
.12
.13
.15
.16
.19
.22
.25
.28
.29
.33
.36
.39
.42
.43
.48
.56
.58
.68
.73
20.2 .18 18.9
21.9 .19 20.5
25
.22 23.2
28.3 .25 26.1
31.4 .27 28.8
34.5 .30 31.6
40.8 .35 36.9
46.9 .40 42
52.7 .45 46.8
58
.49 51.1
61.4 .51 53.8
69.7 .57 60.3
74.6 .61 64
81
.66 69.1
88.9 .71 74.9
91
.73 76.4
101
.79 83.5
118
.91 95.4
122
.93 98
143
1.06 112
153
1.12 118
.25
.27
.31
.35
.38
.41
.48
.54
.60
.65
.68
.76
.80
.86
.92
.94
1.02
1.14
1.17
1.31
1.37
141⁄2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
17.8
19.2
21.6
24.2
26.6
29
33.7
38
42
45.6
47.9
53.2
56.1
60.2
64.7
65.8
71.2
80
81.7
91.6
96
.32
.34
.39
.43
.47
.51
.59
.66
.73
.78
.82
.91
.95
1.02
1.09
1.10
1.18
1.31
1.34
1.48
1.54
16.8
18
20.3
22.6
24.7
26.9
31
34.8
38.2
41.2
43.1
47.5
50
53.3
57
57.8
62.1
69.8
70.1
77.6
80.9
3/8" FACE
900 RPM
.43
.46
.51
.57
.62
.67
.76
.85
.92
.99
1.03
1.12
1.17
1.24
1.31
1.33
1.41
1.54
1.56
1.70
15.1
16.1
17.9
20
21.7
23.4
26.7
29.7
32.3
34.6
36
39.2
40.9
43.4
46
46.5
49.4
53.8
54.6
59.5
REFERENCE PAGE 9.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
70
72
80
84
90
96
100
112
120
140
144
160
180
200
.05
.06
.06
.07
.07
.07
.08
.09
.09
.11
.11
.13
.14
.15
137
140
158
166
177
189
196
222
237
273
281
317
353
388
.10
.11
.12
.13
.13
.14
.15
.17
.18
.20
.21
.23
.26
.28
132
136
152
159
169
180
186
210
223
255
262
294
324
354
.20
.20
.22
.23
.25
.26
.27
.30
.32
.36
.37
.41
.44
.48
123
126
141
147
155
164
170
189
200
225
230
256
278
300
.35
.35
.39
.40
.42
.44
.46
.50
.53
.58
.59
.64
.69
.73
109
111
123
127
133
140
144
158
166
183
186
203
217
230
.46
.47
.52
.53
.56
.58
.59
.65
.67
.73
.74
.80
.85
.89
97.5
99.4
108
112
117
122
125
136
141
153
156
168
178
187
.71
.72
.77
.79
.81
.84
.85
.91
.93
.99
1.00
1.06
1.10
1.13
74.2 .86
75.3 .87
80.7 .92
82.7 .94
85.4 .96
87.9 .98
89.5 1.00
95.5 1.05
98.1 1.07
104
105
111
115
119
60
60.6
64.3
65.5
67.2
68.8
69.7
73.6
75.1
.96
.97
1.02
1.03
3600 RPM
H.P. Torque
50.2
50.7
53.4
54.3
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
39
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
16 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
13
14
15
16
18
20
22
24
26
28
30
32
36
40
48
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 9 & 10.
1200 RPM
1800 RPM
H.P.
Torque
.02
.02
.02
.03
.03
.03
.04
.04
.05
.05
.06
.07
.07
.08
.09
.10
.12
1.24
1.29
1.42
1.55
1.66
1.77
1.96
2.13
2.27
2.38
2.51
2.62
2.69
2.81
21.7
22.6
24.9
27.1
29.0
30.9
34.3
37.2
39.7
41.7
43.9
45.8
47.1
49.3
44.9
48.9
56.1
63.8
71.1
78.7
93.8
109
124
138
154
168
182
200
228
258
314
.04
.04
.04
.05
.06
.06
.07
.09
.10
.11
.12
.13
.14
.16
.18
.20
.24
44.5
48.5
55.6
63.2
70.3
77.8
99.6
107
122
135
151
165
179
196
223
251
304
.07
.08
.09
.10
.11
.12
.14
.17
.19
.21
.23
.25
.27
.30
.34
.38
.45
43.9
47.8
54.7
62
68.9
76.2
90.5
105
118
131
146
160
172
188
213
239
286
.14
.15
.17
.19
.21
.23
.27
.32
.36
.39
.43
.47
.51
.55
.62
.69
.81
16 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
42.7 .20
46.3 .21
52.9 .24
59.8 .28
66.4 .30
73.1 .33
86.5 .39
99
.45
112
.51
124
.56
137
.61
149
.66
160
.71
174
.77
196
.86
217
.95
257
1.11
41.5
44.9
51.2
57.8
63.9
70.3
82.8
94.9
106
117
129
140
149
162
181
200
232
.36
.39
.44
.50
.55
.60
.70
.79
.88
.96
1.04
1.12
1.19
1.28
1.40
1.52
1.73
38.3
41.2
46.7
52.4
57.6
63
73.4
83.2
92.3
100
110
118
125
134
147
160
181
.51
.54
.61
.68
.75
.82
.94
1.06
1.16
1.26
1.36
1.45
1.53
1.63
1.77
1.91
2.12
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
35.6
38.1
42.9
47.9
52.5
57.1
65.9
74.1
81.5
88
95.4
102
107
114
124
134
149
.63
33.2
.67
35.4
.76
39.7
.84
44.2
.92
48.1
.99
52.2
1.14 59.8
1.27 66.7
1.39 72.9
1.49 78.3
1.61 84.4
1.71 89.6
1.79 93.8
1.90 99.7
2.05 107
2.18 115
2.40 126
1/2" FACE
900 RPM
.84
.89
.99
1.09
1.18
1.27
1.44
1.59
1.72
1.83
1.96
2.06
2.15
2.27
2.42
2.55
2.76
29.4
31
34.6
38.2
41.3
44.5
50.4
55.7
60.3
64.2
68.6
72.3
75.1
79.4
84.6
89.4
96.5
REFERENCE PAGE 10.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
54
56
60
64
72
80
84
96
112
120
128
144
160
192
.09
.09
.10
.10
.12
.13
.14
.15
.18
.19
.20
.23
.26
.307
217
224
239
260
290
327
342
388
455
486
516
574
648
762
.17
.17
.18
.20
.22
.25
.26
.29
.34
.36
.38
.42
.47
.54
209
216
231
249
277
311
325
365
425
452
477
527
590
683
.31
.32
.34
.37
.40
.45
.47
.52
.60
.63
.66
.72
.79
.90
196
202
214
231
255
283
294
327
376
396
415
453
500
566
.55
.57
.60
.64
.69
.76
.79
.86
.97
1.01
1.05
1.12
1.22
1.34
16 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
25 RPM
50 RPM
100 RPM
173
178
188
201
219
240
248
271
304
318
330
353
384
421
.74
.76
.80
.85
.91
.99
1.02
1.10
1.22
1.26
1.30
1.38
1.48
1.60
156
160
167
178
192
208
214
231
256
265
274
289
311
335
1.13
1.16
1.20
1.26
1.33
1.42
1.45
1.53
1.65
1.69
1.72
1.79
1.89
119
121
126
132
140
149
152
161
173
177
181
188
198
1.38
1.40
1.44
1.50
1.57
1.66
1.69
1.76
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
96.6
98.1
100
105
110
116
118
123
1.54
1.57
1.60
1.67
.06
.09
.11
.14
.18
.21
.26
19
28
34
44
57
63
82
.09
.12
.15
.19
.24
.28
.34
19
30
31
40
50
58
71
.15
.20
.24
.31
.38
.44
.54
16
21
25
32
40
46
57
.20
.26
.31
.40
.49
.60
.72
14
18
22
28
34
40
50
.25
.32
.38
.49
.62
.72
.88
Torque
REFERENCE PAGE 10.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16
20
24
32
40
48
64
H.P.
81.1
82.2
84.2
87.5
1/2" FACE
900 RPM
3600 RPM
13
17
20
26
32
37
46
.32
.42
.50
.65
.82
.96
1.20
11
15
17
23
29
33
42
3600 RPM
H.P.
Torque
.56
.69
.82
1.12
1.41
1.65
9
12
14
20
25
29
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed
1000 FPM and are not subjected to shock loads.
*Torque Ratings (Lb. Ins.).
40
Gear Catalog
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
12 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
13
14
15
16
18
20
21
22
24
30
32
36
40
42
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
3/4" FACE
200 RPM
300 RPM
600 RPM
900 RPM
REFERENCE PAGE 10.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque
H.P. Torque
H.P. Torque
H.P. Torque
H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.05
.05
.06
.07
.07
.08
.10
.11
.12
.13
.14
.19
.21
.24
.27
.28
.09
.10
.12
.13
.15
.16
.19
.23
.24
.26
.28
.37
.41
.46
.52
.55
.35
.38
.44
.49
.55
.60
.71
.82
.87
.92
1.01
1.29
1.40
1.57
1.74
1.80
.51
.55
.63
.71
.78
.86
1.01
1.15
1.22
1.28
1.41
1.78
1.92
2.13
2.34
2.42
.93
.99
1.12
1.25
1.37
1.50
1.73
1.95
2.06
2.15
2.33
2.85
3.05
3.33
3.59
3.69
1.27
1.35
1.51
1.68
1.83
1.99
2.28
2.54
2.67
2.78
2.98
3.57
3.80
4.09
4.37
4.46
2.82
2.92
3.19
3.46
3.69
3.91
4.31
4.65
4.81
4.93
5.14
49.4
51.1
55.9
60.6
64.6
68.5
75.4
81.4
84.3
86.2
90.0
119
130
149
169
189
209
249
289
310
328
365
483
529
605
682
715
118
129
147
167
186
206
245
284
304
322
357
470
514
586
659
689
.18
.20
.23
.26
.29
.32
.38
.44
.47
.49
.54
.71
.77
.88
.98
1.02
116
126
144
163
181
200
237
274
293
310
343
447
488
552
617
644
12 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
112
120
138
156
172
190
224
257
274
288
317
407
442
495
547
568
108
116
132
149
164
180
242
215
257
270
296
373
403
448
492
509
97
104
118
131
144
157
182
205
216
226
245
299
320
349
377
387
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
88.6
94.4
106
118
128
139
159
178
187
195
209
250
266
286
306
312
1.55
1.64
1.83
2.03
2.20
2.38
2.70
2.99
3.14
3.25
3.47
4.09
4.32
4.62
4.90
4.99
81.5
86.3
96.3
107
116
125
142
157
164
171
182
215
227
243
257
262
3/4" FACE
900 RPM
2.00
2.10
2.33
2.56
2.76
2.96
3.32
3.64
3.80
3.92
4.14
4.78
5.02
5.31
70
73.6
81.6
89.6
96.6
103
116
127
133
137
145
167
176
186
REFERENCE PAGE 11.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
48
54
60
64
72
84
96
108
112
120
144
168
.20
.23
.25
.27
.30
.36
.40
.46
.47
.50
.59
.69
497
571
631
683
762
896
1014
1148
1187
1264
1487
1745
.38
.43
.48
.51
.57
.66
.74
.84
.86
.91
1.06
1.22
477
545
600
647
718
837
938
1054
1087
1150
1333
1541
.70 441
.79 500
.87 546
.93 586
1.02 644
1.17 739
1.30 817
1.44 906
1.47 929
1.55 975
1.75 1103
1.98 1248
1.22
1.36
1.47
1.56
1.69
1.90
2.06
2.24
2.29
2.37
2.61
2.87
12 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
3600 RPM
H.P. Torque
25 RPM
50 RPM
100 RPM
384
430
463
493
533
598
649
706
720
748
821
905
1.62
1.79
1.91
2.02
2.17
2.40
2.56
2.76
2.80
2.89
3.11
3.38
340
377
402
425
455
503
538
579
588
607
654
710
2.41
2.62
2.74
2.87
3.01
3.24
3.39
3.58
3.62
3.69
3.86
253
275
288
301
316
340
356
376
379
387
406
2.88
3.09
3.21
3.33
3.46
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
201
216
224
233
242
3.19
3.40
REFERENCE PAGE 11.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
15
18
21
24
30
36
48
60
.13
.19
.23
.27
.34
.40
.51
.60
41
60
72
85
107
126
161
189
.20
.26
.31
.36
.44
.52
.66
.80
42
54
65
76
92
109
138
168
.34
.43
.50
.58
.73
.82
1.05
1.29
36
45
52
60
76
86
110
135
.45
.56
.66
.76
.95
1.13
1.39
1.72
31
39
46
53
66
79
97
120
.56
.68
.81
.92
1.14
1.36
1.70
2.13
Torque
167
178
3/4" FACE
900 RPM
3600 RPM
H.P.
29
36
42
48
60
71
89
112
.72
.90
1.06
1.22
1.56
1.83
2.33
2.95
25
31
37
42
54
64
81
103
3600 RPM
H.P.
Torque
1.15
1.44
1.80
2.07
2.64
3.18
20
25
31
36
46
56
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed
1000 FPM and are not subjected to shock loads.
*Torque Ratings (Lb. Ins.).
Gear Catalog
41
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
10 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
14
15
16
18
20
24
25
28
30
32
35
36
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
40
42
45
48
50
54
55
60
64
70
72
80
84
90
96
100
110
120
140
144
160
180
900 RPM
1200 RPM
1800 RPM
3600 RPM
H.P.
Torque
.09
.10
.13
.14
.16
.19
.22
.28
.29
.34
.37
.40
.45
.46
4.85
5.00
5.89
6.25
6.62
7.25
7.79
85
88
103
109
116
127
136
229
249
325
362
400
447
553
698
742
854
922
1010
1123
1153
.18
226
.20
246
.25
320
.28
356
.31
393
.37
468
.43
542
.54
681
.57
722
.66
829
.71
893
.78
977
.86 1083
.88 1111
.35
221 .67
.38
240 .73
.49
311 .93
.55
345 1.03
.60
381 1.13
.72
451 1.33
.83
520 1.53
1.03
648 1.88
1.09
687 1.98
1.24
784 2.24
1.34
842 2.39
1.46
917 2.59
1.60 1011 2.83
1.64 1036 2.89
25 RPM
50 RPM
100 RPM
211
229
294
325
357
420
481
592
625
707
754
817
893
912
.96
1.04
1.33
1.46
1.60
1.87
2.13
2.59
2.73
3.06
3.25
3.51
3.80
3.88
202
218
279
307
337
394
448
545
574
644
683
737
799
815
1.71
1.83
2.30
2.51
2.73
3.15
3.53
4.19
4.38
4.83
5.07
5.41
5.79
5.87
179
192
241
264
287
330
371
440
460
507
533
569
608
617
2.31
2.45
3.04
3.30
3.57
4.07
4.52
5.26
5.49
5.98
6.24
6.61
7.01
7.09
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
162
172
213
231
250
285
317
369
384
419
437
463
491
496
2.80
2.95
3.62
3.92
4.22
4.76
5.26
6.04
6.28
6.79
7.05
7.44
7.83
7.91
147
155
190
206
221
250
276
317
330
357
370
391
411
415
1" FACE
900 RPM
3.55
3.71
4.49
4.82
5.15
5.75
6.28
7.09
7.34
7.85
8.10
124
130
157
169
180
201
220
248
257
275
283
REFERENCE PAGE 12.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.31
.32
.35
.38
.39
.43
.44
.48
.51
.56
.57
.64
.67
.72
.76
.79
.87
.94
1.08
1.11
1.24
1.37
780
818
889
946
983
1083
1105
1199
1297
1410
1447
1623
1697
1807
1916
1988
2203
2380
2724
2791
3132
3459
.59
.62
.67
.71
.74
.82
.83
.90
.97
1.04
1.07
1.19
1.24
1.32
1.39
1.44
1.58
1.69
1.91
1.95
2.16
2.36
749
783
850
901
935
1029
1046
1130
1217
1316
1349
1502
1565
1659
1750
1810
1990
2133
2405
2457
2727
2971
1.10
1.15
1.24
1.31
1.35
1.48
1.50
1.61
1.72
1.84
1.88
2.07
2.15
2.26
2.37
2.44
2.64
2.80
3.09
3.15
3.44
3.68
693
722
780
823
851
931
945
1013
1084
1162
1187
1308
1355
1425
1492
1535
1667
1766
1949
1983
2166
2318
1.92
1.99
2.13
2.23
2.29
2.48
2.51
2.66
2.82
2.99
3.04
3.30
3.39
3.53
3.65
3.74
3.99
4.17
4.48
4.54
4.87
5.11
10 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
600 RPM
REFERENCE PAGE 11.
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
10 DIAMETRAL PITCH CAST IRON
No.
Teeth
300 RPM
1" FACE
25 RPM
50 RPM
100 RPM
603
626
670
701
722
782
791
839
890
942
958
1039
1069
1111
1152
1177
1258
1314
1413
1430
1535
1609
2.54
2.63
2.79
2.91
2.98
3.21
3.24
3.41
3.59
3.77
3.82
4.10
4.10
4.34
4.46
4.54
4.81
4.98
5.27
5.33
5.66
5.87
534
552
587
611
626
674
681
716
755
792
803
861
882
911
938
955
1011
1047
1108
1119
1188
1233
3.79
3.88
4.08
4.20
4.27
4.53
4.57
4.73
4.93
5.10
5.15
5.43
5.51
5.63
5.73
5.80
6.05
6.18
398
407
428
441
449
476
480
497
518
535
541
570
579
591
602
609
636
650
4.52
4.61
4.81
4.92
4.99
5.26
5.29
5.43
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
317
323
337
345
350
368
371
381
5.01
5.09
.27
.33
.40
.51
.62
85
104
126
161
195
.38
.47
.54
.67
.81
80
99
113
140
170
.63
.78
.88
1.09
1.29
66
82
92
114
135
.83
58
1.02
71
1.15
80
1.42
99
1.69 118
1.00
1.24
1.39
1.73
2.07
Torque
REFERENCE PAGE 11.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
15
18
20
25
30
H.P.
263
267
1" FACE
900 RPM
3600 RPM
52
65
73
90
109
1.31
1.63
1.85
2.32
2.80
46
57
65
81
98
3600 RPM
H.P.
Torque
2.08
2.60
3.12
4.00
4.89
36
45
55
70
86
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: 1. Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
2. Non-metallic gears are most commonly used for the driving pinion of a pair of gears, with mating gear made of Cast Iron or Steel, where pitch line velocities exceed
1000 FPM and are not subjected to shock loads.
*Torque Ratings (Lb. Ins.).
42
Gear Catalog
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
8 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
14
15
16
18
20
22
24
28
30
32
25 RPM
50 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1-1/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 12.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.18
.19
.25
.28
.31
.37
.43
.48
.54
.66
.71
.78
446
485
632
703
778
927
1075
1219
1355
1655
1786
1957
.35
.38
.49
.55
.60
.72
.83
.94
1.04
1.27
1.36
1.49
439
478
620
690
762
905
1047
1184
1313
1596
1718
1878
.68
.73
.95
1.05
1.16
1.37
1.58
1.78
1.96
2.37
2.53
2.76
427
463
599
664
731
865
996
1121
1237
1490
1598
1738
1.28
1.38
1.77
1.96
2.15
2.52
2.88
3.21
3.52
4.18
4.44
4.80
8 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
404
436
559
617
677
794
907
1012
1109
1316
1400
1513
1.82
1.96
2.49
2.74
3.00
3.49
3.96
4.39
4.78
5.61
5.93
6.38
383
412
524
576
630
734
832
923
1004
1178
1247
1340
3.16
3.37
4.21
4.58
4.97
5.69
6.35
6.95
7.46
8.53
8.93
9.49
332 4.19 294
5.00
354 4.43 310
5.26
442 5.45 382
6.40
481 5.90 413
6.89
522 6.36 445
7.39
598 7.20 504
8.30
667 7.96 557
9.10
730 8.62 603
9.79
783 9.17 642 10.36
896 10.33 723 11.54
938 10.73 752 11.94
997 11.34 794 12.56
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
600 RPM
263 6.21
276 6.47
336 7.75
362 8.29
388 8.83
436 9.80
478 10.64
514 11.34
544 11.90
606
627
660
1-1/4" FACE
900 RPM
1200 RPM
217 8.17
226 8.39
271 9.81
290 10.39
309 10.96
343
372
397
417
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
36
40
42
44
48
54
56
60
64
72
80
84
88
96
112
120
128
144
160
.53
.60
.63
.67
.72
.83
.86
.92
.99
1.10
1.23
1.29
1.34
1.45
1.69
1.79
1.89
2.09
2.33
1.01
1.14
1.19
1.26
1.36
1.55
1.60
1.70
1.83
2.02
2.24
2.34
2.42
2.60
2.98
3.14
3.30
3.59
3.95
1279
1434
1498
1591
1719
1958
2021
2145
2307
2548
2828
2943
3056
3277
3757
3960
4155
4528
4980
1.86
2.07
2.16
2.28
2.44
2.75
2.83
2.98
3.19
3.47
3.81
3.94
4.06
4.31
4.83
5.04
5.24
5.60
6.07
1174
1305
1358
1437
1540
1735
1784
1880
2008
2188
2398
2481
2561
2713
3045
3176
3300
3532
3828
3.20
3.51
3.63
3.82
4.05
4.48
4.59
4.79
5.06
5.42
5.84
5.99
6.13
6.41
7.01
7.22
7.42
7.78
8.28
8 DIAMETRAL PITCH NON-METALLIC
No.
Teeth
25 RPM
50 RPM
100 RPM
884
961
989
1036
1088
1192
1215
1259
1323
1399
1492
1523
1553
1608
1731
1773
1811
6.14
6.55
6.69
6.95
7.19
7.72
7.83
8.01
8.33
8.64
9.06
9.18
9.30
9.50
645
688
703
730
756
811
822
842
875
908
952
965
976
998
7.25
7.66
7.78
8.05
8.27
300 RPM
600 RPM
25 RPM
50 RPM
176
192
233
283
334
.76
.88
.99
1.19
1.38
160
185
208
250
290
1.23
1.41
1.59
1.90
2.20
129
148
167
200
231
900 RPM
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1.61
1.84
2.08
2.50
2.91
1200 RPM
112
129
146
175
204
1.96
2.25
2.54
3.06
3.57
103
118
133
160
187
1-1/2" FACE
600 RPM
946
1030
1340
1491
1648
1962
2273
2436
2860
3335
3761
.74
.80
1.04
1.15
1.27
1.51
1.74
1.86
2.18
2.53
2.84
928
1008
1308
1452
1603
1902
2196
2349
2745
3186
3576
1.42
1.54
1.98
2.19
2.41
2.84
3.26
3.48
4.03
4.64
5.17
893
968
1247
1381
1519
1792
2057
2194
2541
2924
3255
2.64
2.84
3.62
3.99
4.37
5.10
5.79
6.15
7.02
7.97
8.76
832 3.70 778
896 3.97 834
1142 5.01 1053
1257 5.49 1154
1376 5.98 1257
1606 6.92 1455
1825 7.81 1640
1937 8.25 1734
2212 9.32 1958
2512 10.48 2201
2761 11.41 2396
6.20
6.57
8.12
8.81
9.51
10.80
11.97
12.56
13.87
15.29
16.35
652
691
853
925
999
1135
1258
1319
1457
1606
1717
900 RPM
8.01
8.41
10.24
11.03
11.83
13.28
14.57
15.20
16.57
18.05
19.10
H.P. Torque
REFERENCE PAGE 12.
1800 RPM
2.60
3.00
3.40
4.13
4.86
91
105
119
144
170
561
589
717
773
828
930
1020
1065
1160
1264
1338
9.37
9.78
11.77
12.62
13.47
15.00
16.33
16.99
18.35
3600 RPM
H.P. Torque
4.39
4.71
5.84
7.22
77
82
102
126
REFERENCE PAGE 13.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.38
.41
.53
.59
.65
.78
.90
.97
1.13
1.32
1.49
3600 RPM
507
536
545
564
579
141⁄ 2° PRESSURE ANGLE 1-1/4" FACE
200 RPM
.56
.61
.74
.90
1.06
6 DIAMETRAL PITCH STEEL
11
12
14
15
16
18
20
21
24
27
30
4.21
4.57
4.71
4.93
5.18
5.67
5.78
5.99
6.30
6.66
7.10
7.25
7.39
7.65
8.24
8.44
8.62
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
16
18
20
24
28
No.
Teeth
1009
1107
1145
1204
1275
1413
1446
1508
1595
1707
1839
1887
1933
2019
2207
2275
2339
2452
2610
143
147
172
182
192
REFERENCE PAGE 13.
No.
Teeth
1339
1508
1579
1681
1824
2092
2164
2307
2492
2775
3107
3246
3384
3656
4256
4517
4773
5272
5868
3600 RPM
H.P. Torque
492
514
618
663
708
788
858
892
964
11.29
11.69
13.85
14.75
15.65
17.23
3600 RPM
H.P. Torque
395 14.19 249
409 14.51 254
485
517
548
603
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
43
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
6 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
141⁄ 2° PRESSURE ANGLE
1-1/2" FACE
200 RPM
900 RPM
300 RPM
600 RPM
REFERENCE PAGE 14.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
32
33
36
40
42
48
54
60
64
66
72
84
96
108
120
144
.98 2470
1.01 2543
1.12 2813
1.25 3163
1.31 3310
1.51 3814
1.73 4364
1.90 4801
2.05 5177
2.11 5322
2.28 5750
2.66 6695
2.98 7510
3.35 8436
3.65 9205
4.23 10664
1.86
1.91
2.10
2.35
2.45
2.80
3.18
3.47
3.72
3.81
4.09
4.69
5.19
5.75
6.19
7.01
2341 3.36
2406 3.45
2650 3.77
2962 4.17
3090 4.33
3530 4.88
4005 5.46
4371 5.88
4688 6.26
4807 6.39
5153 6.77
5912 7.60
6538 8.24
7246 8.97
7806 9.50
8831 10.43
2120
2173
2375
2628
2728
3073
3440
3706
3944
4027
4267
4790
5193
5652
5987
6571
5 DIAMETRAL PITCH STEEL
No.
Teeth
11
12
14
15
16
18
20
25 RPM
50 RPM
24
25
30
35
40
45
50
55
60
70
80
100
100 RPM
11
12
14
15
16
18
20
22
7.32
7.46
7.99
8.62
8.85
9.64
10.47
10.97
11.48
11.62
12.03
12.96
13.56
14.31
1539
1567
1678
1811
1858
2025
2199
2305
2411
2442
2528
2724
2849
3006
10.38
10.51
11.09
11.76
11.97
12.75
13.59
14.00
14.50
14.62
14.94
200 RPM
300 RPM
.63
.68
.89
.99
1.09
1.30
1.50
1583
1723
2241
2491
2754
3275
3793
1.23
1.33
1.73
1.92
2.11
2.50
2.89
1546
1680
2176
2415
2664
3156
3640
2.35
2.54
3.26
3.61
3.97
4.67
5.35
1479
1600
2057
2275
2501
2942
3370
25 RPM
50 RPM
100 RPM
4.31
4.64
5.89
6.47
7.07
8.22
9.31
1360 5.99 1258
1462 6.40 1345
1855 8.04 1689
2039 8.79 1847
2227 9.56 2008
2590 11.01 2313
2934 12.36 2597
1-3/4" FACE
600 RPM
9.79
10.33
12.68
13.71
14.76
16.68
18.40
900 RPM
REFERENCE PAGE 14.
1200 RPM
1028
1085
1332
1441
1550
1752
1933
12.41
12.99
15.70
16.86
18.03
20.13
21.98
869
910
1099
1181
1262
1410
1539
14.33
14.91
17.82
19.05
20.27
22.46
24.34
141⁄ 2° PRESSURE ANGLE
1-3/4" FACE
200 RPM
900 RPM
300 RPM
1800 RPM
600 RPM
753
783
936
1000
1065
1179
1279
16.96
17.49
20.60
21.88
REFERENCE PAGE 14.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.13
1.20
1.49
1.80
2.08
3.95
4.17
5.03
5.95
6.70
2.16
2.29
2.80
3.37
3.85
2.36 5947 4.33
2.60 6543 4.73
2.90 7321 5.25
3.14 7910 5.62
3.65 9213 6.45
4.17 10514 7.26
5.03 12671 8.52
2723
2885
3534
4246
4852
2487 6.73
2626 7.07
3168 8.32
3749 9.64
4224 10.65
5459 7.44 4689 11.60
5956 8.01 5051 12.29
6612 8.79 5539 13.27
7089 9.31 5870 13.86
8135 10.46 6592 15.16
9153 11.54 7270 16.35
10745 13.08 8241 17.84
25 RPM
50 RPM
2120 8.79 1847 12.69
2227 9.20 1933 13.19
2623 10.66 2238 14.80
3038 12.15 2554 16.44
3356 13.25 2783 17.53
1333 14.88 1042
1385 15.41 1079
1554 17.00 1191
1727
1841
3657
3874
4182
4368
4779
5152
5620
1945
2005
2112
2159
14.27
14.95
15.99
16.56
17.84
18.99
2997
3142
3359
3478
3748
3989
18.52
19.08
20.11
20.55
141⁄ 2° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
600 RPM
2" FACE
900 RPM
2810
3057
3971
4414
4876
5794
6703
7579
2.17
2.35
3.04
3.37
3.71
4.39
5.06
5.69
2730 4.10
2963 4.43
3831 5.67
4247 6.26
4680 6.87
5535 8.06
6373 9.21
7173 10.28
2584
2792
3577
3948
4332
5080
5802
6478
7.41
7.94
10.02
10.98
11.97
13.85
15.61
17.22
2334
2502
3158
3461
3772
4364
4920
5427
10.13
10.79
13.46
14.67
15.90
18.20
20.33
22.23
2128
2266
2827
3081
3339
3824
4271
4670
16.01
16.83
20.48
22.06
23.66
26.56
29.13
31.33
1682
1768
2151
2318
2485
2790
3060
3291
19.86
20.69
24.79
26.52
28.26
31.35
34.04
36.29
1391
1449
1736
1857
1979
2196
2384
2541
22.57
23.37
27.70
29.50
31.30
3600 RPM
H.P. Torque
REFERENCE PAGE 15.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.11
1.21
1.58
1.75
1.93
2.30
2.66
3.01
3600 RPM
H.P. Torque
594
613
721
766
H.P. Torque H.P. Torque
2859
3034
3752
4548
5242
H.P. Torque
1090 12.06 844
1104
1165
1235
1257
1339
1427
1471
1523
1536
1569
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
4 DIAMETRAL PITCH STEEL
No.
Teeth
1783
1821
1967
2144
2211
2441
2683
2842
2993
3040
3175
3473
3680
3924
4083
4347
141⁄ 2° PRESSURE ANGLE
5 DIAMETRAL PITCH CAST IRON
No.
Teeth
5.66
5.78
6.24
6.80
7.02
7.75
8.52
9.02
9.50
9.65
10.08
11.02
11.68
12.45
12.96
13.79
3600 RPM
3600 RPM
H.P.
1185 26.14 915
1228 26.85 940
1455
1550
1644
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
44
Gear Catalog
®
Torque
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
4 DIAMETRAL PITCH CAST IRON
No.
Teeth
24
28
30
32
36
40
42
44
48
54
56
60
64
72
80
84
88
96
25 RPM
50 RPM
100 RPM
11
12
14
15
16
18
20
21
200 RPM
2.00
2.43
2.62
2.86
3.25
3.64
3.80
4.04
4.36
4.97
5.13
5.44
5.86
6.47
7.18
7.47
7.76
8.32
5042
6129
6599
7211
8187
9177
9588
10181
10999
12530
12933
13727
14763
16305
18101
18838
19561
20970
3.77
4.54
4.87
5.30
5.96
6.63
6.90
7.29
7.82
8.81
9.06
9.55
10.20
11.11
12.18
12.60
13.00
13.78
4750
5723
6135
6675
7514
8354
8694
9195
9858
11104
11419
12034
12852
14005
15350
15877
16387
17365
6.75
8.02
8.53
9.22
10.24
11.24
11.63
12.22
12.95
14.35
14.68
15.32
16.20
17.33
18.68
19.17
19.63
20.50
4257
5053
5378
5811
6454
7085
7328
7703
8163
9045
9253
9652
10209
10923
11772
12079
12372
12922
24
30
36
42
48
54
60
72
84
96
108
600 RPM
25 RPM
50 RPM
11.19
12.99
13.69
14.65
15.98
17.24
17.69
18.46
19.28
20.94
21.29
21.94
22.95
24.07
25.48
25.93
26.35
27.13
3525
4094
4314
4616
5034
5433
5575
5816
6074
6598
6708
6915
7233
7585
8029
8170
8304
8548
14.32
16.38
17.14
18.22
19.64
20.97
21.42
22.24
23.02
24.72
25.04
25.65
26.66
27.65
3008
3441
3601
3829
4126
4406
4499
4672
4837
5193
5261
5388
5601
5810
19.88
22.16
22.92
24.11
25.49
26.77
27.12
27.97
28.58
2" FACE
900 RPM
1200 RPM
REFERENCE PAGE 15.
1800 RPM
100 RPM
200 RPM
300 RPM
3" FACE
7421 5.67 7146 10.56
8067 6.14 7743 11.37
10462 7.92 9979 14.49
11618 8.76 11046 15.96
12825 9.64 12156 17.47
15214 11.37 14333 20.38
17570 13.05 16454 23.16
18795 13.92 17549 24.59
6652
7167
9134
10056
11008
12845
14599
15495
25 RPM
50 RPM
100 RPM
18.55
19.80
24.79
27.06
29.38
33.75
37.80
39.84
5846
6239
7812
8528
9259
10637
11913
12556
24.82
26.30
32.48
35.24
38.03
43.20
47.89
50.24
5213
5524
6824
7403
7989
9076
10062
10554
600 RPM
37.47
39.14
47.09
50.49
53.89
60.00
65.33
67.96
3936
4111
4947
5304
5661
6303
6863
7139
141⁄ 2° PRESSURE ANGLE
200 RPM
300 RPM
900 RPM
1200 RPM
1800 RPM
600 RPM
45.15
46.74
55.40
59.01
62.60
68.93
13175
17164
21199
24721
28241
32043
34965
41223
47293
52300
57968
9.67
12.40
15.07
17.32
19.50
21.83
23.52
27.08
30.40
32.96
35.87
12195
15626
18998
21828
24586
27523
29651
34136
38322
41545
45212
16.84
21.03
24.96
28.06
30.99
34.06
36.08
40.30
44.08
46.71
49.81
10617
13251
15732
17687
19530
21466
22740
25402
27782
29437
31395
26.76
32.25
37.15
40.69
43.91
47.30
49.22
53.32
56.87
59.02
61.84
8433
10162
11707
12822
13838
14906
15509
16803
17923
18597
19486
33.30
39.23
44.37
47.87
51.00
54.35
3600 RPM
H.P. Torque
3162 50.30 2642
3273 51.78 2719
3880
4132
4383
4827
3" FACE
900 RPM
1200 RPM
REFERENCE PAGE 15.
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
5.23
6.81
8.41
9.81
11.20
12.71
13.87
16.35
18.76
20.75
22.99
H.P. Torque
REFERENCE PAGE 15.
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
2.94
3.20
4.15
4.61
5.09
6.03
6.97
7.46
3600 RPM
2089 22.84 1600
2328
2408
2534
2677
2812
2849
2938
3002
141⁄ 2° PRESSURE ANGLE
3 DIAMETRAL PITCH CAST IRON
No.
Teeth
300 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
3 DIAMETRAL PITCH STEEL
No.
Teeth
141⁄ 2° PRESSURE ANGLE
3600 RPM
H.P. Torque
6995 44.05 4627
8241 50.07 5259
9322 55.08 5786
10056
10715
11417
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
45
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
20 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
24
25
30
35
40
45
50
60
70
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 30.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P. Torque
.01
.02
.02
.02
.03
.03
.04
.04
.05
.07
.08
.09
.10
.12
.14
1.08
1.32
1.42
1.49
1.64
1.78
2.00
2.04
2.28
2.55
2.73
36.5
48.0
53.8
58.6
68.6
79.2
99.5
105
132
165
194
224
248
306
365
.03
.04
.04
.05
.05
.06
.08
.08
.10
.13
.15
.17
.19
.24
.28
36.3
47.7
53.3
58.1
67.9
78.4
98.3
103
130
162
190
219
242
296
352
.06
.07
.08
.09
.11
.12
.15
.16
.20
.25
.29
.33
.37
.44
.52
35.8
46.9
52.5
57.1
66.7
76.8
95.8
101
126
156
182
209
230
279
329
20 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
.11
.14
.16
.18
.20
.23
.29
.30
.38
.46
.53
.61
.66
.79
.92
34.9 .16
45.6 .21
50.9 .23
55.2 .25
64.2 .29
73.7 .34
91.3 .41
95.6 .43
119
.53
145
.65
168
.75
192
.84
210
.92
250 1.08
291 1.24
34.1
44.3
49.3
53.5
62.0
70.8
87.1
91.1
112
136
157
177
192
227
260
.30
.39
.43
.46
.53
.60
.73
.76
.92
1.09
1.24
1.38
1.47
1.68
1.88
31.8
40.9
45.3
48.8
56.1
63.5
76.7
79.9
96.4
115
130
145
154
177
198
20° PRESSURE ANGLE
200 RPM
300 RPM
.42
.54
.60
.64
.73
.82
.98
1.02
1.21
1.42
1.58
1.74
1.84
2.07
2.28
29.7
37.9
41.9
44.9
51.2
57.5
68.5
71.1
84.5
99.4
111
122
129
145
160
.53
.67
.74
.79
.90
1.00
1.18
1.22
1.43
1.67
1.84
2.01
2.10
2.34
2.55
28.0
35.4
38.9
41.6
47.1
52.6
61.9
64.1
75.2
87.5
96.6
105
111
123
134
1/2" FACE
600 RPM
900 RPM
.71
.89
.97
1.04
1.16
1.28
1.48
1.53
1.76
2.02
2.20
2.37
2.46
2.69
25.0
31.2
34.1
36.3
40.6
44.9
51.9
53.5
61.6
70.6
77.0
83.0
86.1
94.0
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
80
84
90
100
120
140
160
180
200
.10
.11
.11
.13
.15
.18
.21
.23
.25
256
269
287
317
387
447
520
579
637
.20
.20
.22
.24
.29
.33
.38
.42
.46
246
257
274
302
365
418
481
532
580
.36
.38
.40
.44
.52
.59
.66
.72
.78
228
237
252
275
327
369
419
457
492
16 DIAMETRAL PITCH STEEL
12
14
15
16
18
20
24
28
30
32
36
40
48
56
60
64
72
80
25 RPM
50 RPM
.63
.65
.69
.74
.86
.95
1.06
1.13
1.20
198
206
216
233
271
299
333
356
377
.84
.86
.90
.96
1.10
1.20
1.31
1.39
1.46
176
181
189
202
231
251
276
292
306
1.24
1.27
1.32
1.38
1.53
1.62
1.74
1.80
1.86
131
134
138
145
161
170
183
189
195
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1.49
1.51
1.55
1.61
1.76
1.83
104
106
109
113
123
128
1.65
1.67
1.71
1.76
900 RPM
3600 RPM
H.P.
REFERENCE PAGE 31.
1200 RPM
1800 RPM
3600 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
H.P.
Torque
.03
.04
.05
.05
.06
.07
.09
.11
.12
.13
.16
.18
.22
.26
.28
.31
.35
.39
2.26
2.73
2.93
3.07
3.35
3.62
4.02
4.40
4.55
4.79
5.09
5.37
39.5
47.7
51.3
53.8
58.6
63.3
70.4
77.0
79.7
83.9
89.1
94.1
85.5
112
126
136
160
185
233
283
308
340
395
452
556
665
711
779
872
991
.07
.09
.10
.11
.13
.14
.18
.22
.24
.26
.31
.35
.43
.51
.54
.59
.66
.75
84.7
111
124
135
158
183
229
278
302
333
385
440
539
642
684
748
833
943
.13
.17
.19
.21
.25
.28
.35
.43
.46
.51
.58
.66
.81
.95
1.01
1.10
1.21
1.36
83.4
109
122
133
155
178
222
268
291
320
368
418
508
599
636
692
764
858
.26
.33
.37
.40
.47
.54
.66
.79
.86
.94
1.07
1.21
1.44
1.68
1.77
1.91
2.08
2.31
80.9
105
117
127
148
169
209
250
270
296
338
381
455
529
557
602
656
728
.37
.48
.54
.58
.67
.77
.94
1.12
1.20
1.31
1.49
1.66
1.96
2.25
2.36
2.54
2.74
3.01
78.4
102
113
122
142
161
198
235
253
275
312
349
412
474
496
533
575
632
.69
.88
.97
1.04
1.19
1.35
1.62
1.88
2.01
2.17
2.42
2.67
3.06
3.43
3.55
3.78
4.00
4.31
72.0
92.2
102
110
125
141
170
198
211
228
254
280
322
360
373
397
420
653
.95
1.20
1.33
1.42
1.61
1.80
2.12
2.44
2.59
2.78
3.06
3.34
3.76
4.15
4.27
4.51
4.72
5.04
66.5
84.4
92.8
99.4
113
126
149
171
181
195
215
234
264
291
299
316
330
353
1.18
1.48
1.62
1.73
1.94
2.16
2.52
2.87
3.02
3.23
3.53
3.82
4.25
4.64
4.75
5.00
61.8
77.7
85.2
90.8
102
113
132
151
159
170
186
201
223
244
250
263
1.55
1.92
2.09
2.21
2.46
2.70
3.10
3.47
3.63
3.86
4.17
4.47
4.88
54.2
67.2
73.1
77.5
86.2
94.7
108
122
127
135
146
156
171
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
46
Torque
86.5
87.8
89.7
92.4
3/4" FACE
600 RPM
18.9
23.0
24.9
26.2
28.7
31.2
34.9
35.8
40.0
44.7
47.8
REFERENCE PAGE 30.
1200 RPM
No.
Teeth
No.
Teeth
3600 RPM
Gear Catalog
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
16 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
20° PRESSURE ANGLE
200 RPM
300 RPM
3/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 31.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
96
128
144
160
192
.28
.38
.42
.47
.56
707 .53 666
949 .70 879
1057 .77 970
1195 .86 1088
1406 1.00 1260
.95 597
1.21 765
1.32 833
1.46 923
1.66 1044
12 DIAMETRAL PITCH STEEL
No.
Teeth
12
13
14
15
16
18
20
21
24
28
30
36
42
48
54
25 RPM
50 RPM
1.57
1.93
2.06
2.25
2.46
494
608
650
707
777
2.01
2.40
2.54
2.73
2.94
421
504
533
574
618
2.79
3.17
3.29
3.49
3.65
293
333
346
366
384
3.20
3.56
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
224
249
1" FACE
600 RPM
900 RPM
REFERENCE PAGE 31.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.08
.09
.11
.12
.13
.15
.17
.19
.22
.26
.29
.37
.44
.52
.60
202 .16 200
233 .18 230
265 .21 262
297 .23 293
323 .25 319
379 .30 373
437 .34 429
468 .36 459
548 .43 537
667 .52 651
720 .56 707
928 .71 899
1112 .85 1073
1304 .99 1252
1505 1.14 1437
.31
196
.36
225
.41
256
.45
285
.49
310
.57
361
.66
415
.70
443
.82
515
.99
621
1.07
673
1.34
847
1.59 1001
1.84 1159
2.09 1319
12 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
.60 188
.86
.68 215
.98
.77 244 1.11
.86 271 1.23
.93 294 1.33
1.08 340 1.53
1.23 389 1.74
1.31 413 1.84
1.51 477 2.11
1.80 568 2.49
1.94 612 2.68
2.41 759 3.27
2.81 884 3.77
3.20 1009 4.25
3.60 1133 4.73
181
206
233
259
279
322
365
388
444
524
562
688
792
893
993
1.54
1.75
1.96
2.16
2.31
2.63
2.95
3.11
3.50
4.04
4.29
5.11
5.73
6.33
6.90
162
183
206
227
243
276
310
327
368
425
451
537
602
665
724
20° PRESSURE ANGLE
200 RPM
300 RPM
2.09
2.36
2.63
2.88
3.07
3.46
3.84
4.03
4.48
5.10
5.37
6.28
6.94
7.56
8.14
147
165
184
202
215
242
269
282
314
357
376
440
486
529
570
2.55
2.86
3.18
3.46
3.68
4.10
4.52
4.73
5.21
5.86
6.15
7.09
7.76
8.37
134
150
167
182
193
215
238
249
274
308
323
373
407
440
1" FACE
600 RPM
900 RPM
3.27
3.63
4.00
4.34
4.58
5.04
5.50
5.73
6.22
6.89
7.19
8.15
114
127
140
152
160
177
193
201
218
241
252
285
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
60
66
72
84
96
108
120
132
144
168
192
216
.40
.45
.48
.58
.65
.75
.82
.89
.97
1.13
1.27
1.41
.75
.84
.91
1.07
1.21
1.37
1.49
1.61
1.73
2.00
2.22
2.42
949
1064
1150
1354
1519
1725
1882
2034
2181
2526
2794
3045
1.37
1.53
1.64
1.90
2.10
2.35
2.53
2.70
2.87
3.25
3.52
3.77
864
961
1031
1196
1322
1482
1596
1704
1806
2047
2219
2375
2.32
2.56
2.71
3.07
3.33
3.67
3.88
4.08
4.26
4.71
4.99
5.23
733
805
853
969
1050
1156
1224
1287
1344
1484
1573
1649
3.03
3.30
3.47
3.88
4.15
4.51
4.73
4.92
5.09
5.54
5.80
6.01
636
693
728
814
871
947
993
1033
1070
1164
1218
1263
4.34
4.65
4.81
5.24
5.49
5.85
6.03
6.19
6.32
456
488
506
551
576
615
634
650
664
5.07
5.38
5.53
3600 RPM
H.P. Torque
4.53
4.97
5.42
5.80
6.05
6.55
7.02
7.26
7.72
79.4
87.1
94.8
102.0
106.0
115.0
123.0
127.0
135.0
REFERENCE PAGE 32.
1200 RPM
No.
Teeth
998
1125
1221
1450
1641
1879
2068
2252
2433
2861
3209
3545
3600 RPM
H.P. Torque
3600 RPM
H.P.
Torque
355
377
387
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
47
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
10 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
24
25
28
30
35
40
45
48
50
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
1-1/4" FACE
600 RPM
900 RPM
REFERENCE PAGE 32.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.14
.19
.21
.23
.27
.31
.39
.41
.47
.52
.64
.75
.87
.92
.96
363
477
533
580
679
784
983
1032
1195
1300
1615
1896
2190
2328
2420
.28
.37
.42
.45
.53
.61
.76
.80
.92
1.00
1.24
1.44
1.66
1.76
1.83
358
469
525
571
667
768
958
1005
1161
1260
1558
1820
2092
2218
2301
.55
.72
.81
.88
1.02
1.17
1.45
1.52
1.74
1.88
2.31
2.67
3.05
3.21
3.32
349
456
509
552
642
737
913
956
1097
1187
1454
1685
1920
2026
2095
10 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
1.06
1.37
1.52
1.64
1.90
2.16
2.65
2.76
3.14
3.38
4.08
4.65
5.23
5.48
5.64
333
431
479
518
599
682
834
870
990
1064
1284
1467
1649
1727
1777
1.51
1.95
2.16
2.32
2.67
3.02
3.65
3.80
4.29
4.59
5.47
6.18
6.88
7.16
7.34
318 2.66 280 3.57
409 3.37 354 4.46
453 3.70 389 4.87
488 3.96 416 5.18
561 4.48 471 5.79
635 5.00 526 6.41
767 5.89 619 7.41
799 6.10 641 7.64
901 6.76 710 8.37
964 7.16 752 8.80
1150 8.33 875 10.08
1299 9.20 966 10.99
1445 10.04 1054 11.85
1504 10.33 1085 12.12
1542 10.52 1105 12.29
20° PRESSURE ANGLE
200 RPM
300 RPM
250 4.30 226 5.40 189 7.27
312 5.31 279 6.58 230 8.63
341 5.78 303 7.10 249 9.22
363 6.12 321 7.47 262 9.60
406 6.79 356 8.19 287 10.33
449 7.45 391 8.90 311 11.04
519 8.50 447 9.98 349
535 8.74 459 10.21 358
586 9.50 499 10.99 385
616 9.94 522 11.42 400
706 11.27 592
770 12.17 639
830
849
861
1-1/4" FACE
600 RPM
900 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
55
60
70
80
90
100
120
140
160
200
.65
.71
.84
.98
1.09
1.20
1.45
1.66
1.91
2.30
1.23
1.33
1.57
1.81
2.00
2.18
2.59
2.93
3.32
3.90
1550
1675
1974
2279
2517
2746
3271
3688
4191
4920
2.22
2.38
2.77
3.15
3.43
3.70
4.30
4.74
5.28
5.99
1400
1501
1743
1984
2162
2329
2709
2989
3329
3773
8 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
22
24
28
32
36
25 RPM
50 RPM
3.72
3.94
4.48
5.00
5.35
5.67
6.40
6.88
7.49
8.17
1173
1243
1413
1576
1686
1786
2016
2167
2359
2573
4.80
5.05
5.65
6.22
6.58
6.89
7.64
8.09
8.69
1009
1061
1187
1307
1382
1448
1605
1699
1826
6.77
7.01
7.65
8.23
8.54
8.80
9.48
711
737
803
865
897
924
996
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
7.84
8.06
678
890
996
1084
1268
1462
1651
1831
2224
2664
3082
.53
.69
.77
.84
.98
1.13
1.27
1.41
1.70
2.03
2.34
667
874
976
1061
1238
1424
1604
1775
2145
2557
2944
1.03
1.34
1.49
1.62
1.88
2.15
2.41
2.65
3.18
3.76
4.29
647
843
939
1018
1183
1354
1518
1672
2003
2367
2703
1.93
2.50
2.77
2.99
3.44
3.91
4.35
4.75
5.61
6.54
7.37
609
787
873
943
1086
1233
1371
1498
1768
2060
2321
2.74
3.51
3.88
4.18
4.77
5.39
5.95
6.46
7.54
8.68
9.68
576
738
816
877
1003
1131
1250
1357
1583
1824
2034
4.71
5.92
6.49
6.92
7.78
8.64
9.41
10.08
11.47
12.92
14.13
495
622
681
727
817
908
989
1059
1204
1358
1484
3600 RPM
H.P. Torque
900 RPM
REFERENCE PAGE 33.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.27
.35
.39
.43
.50
.58
.66
.73
.88
1.06
1.22
6.19 434
7.68 537
8.35 585
8.85 620
9.84 689
10.82 758
11.67 817
12.39 868
13.88 972
15.44 1081
16.68 1168
7.35
9.01
9.76
10.30
11.35
12.38
13.27
14.00
15.51
17.10
386
473
513
541
596
650
698
735
815
898
9.03
10.91
11.73
12.30
13.40
14.47
15.36
16.08
316
382
411
431
469
507
538
563
3600 RPM
H.P.
Torque
11.72
13.81
14.70
205
242
257
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
48
Gear Catalog
®
127
151
161
168
181
193
549
564
1-1/2" FACE
600 RPM
Torque
REFERENCE PAGE 32.
1200 RPM
No.
Teeth
1638
1778
2114
2462
2742
3016
3650
4177
4814
5802
3600 RPM
H.P.
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
8 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
20° PRESSURE ANGLE
200 RPM
300 RPM
1-1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 33.
1200 RPM
1800 RPM
No.
Teeth
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
40
44
48
56
60
64
72
80
88
96
112
120
128
.84
.95
1.03
1.22
1.30
1.42
1.59
1.79
1.96
2.11
2.49
2.64
2.79
2111
2384
2587
3080
3283
3588
3997
4525
4929
5325
6266
6651
7028
1.59
1.79
1.93
2.28
2.42
2.64
2.91
3.27
3.53
3.79
4.39
4.63
4.85
2007
2256
2437
2876
3052
3322
3669
4119
4451
4772
5533
5830
6118
2.90
3.23
3.47
4.03
4.25
4.59
5.00
5.54
5.92
6.27
7.11
7.42
7.71
1928 4.92 1550 6.40
2038 5.42 1707 6.99
2184 5.74 1809 7.35
2539 6.53 2057 8.23
2676 6.81 2146 8.53
2892 7.29 2297 9.07
3151 7.80 2458 9.59
3493 8.50 2679 10.34
3729 8.93 2816 10.76
3952 9.33 2941 11.15
4483 10.31 3250 12.13
4677 10.63 3351 12.43
4860 10.93 3444 12.69
6 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
21
24
27
30
25 RPM
50 RPM
1345
1469
1543
1729
1792
1905
2014
2173
2262
2341
2549
2610
2667
9.18
9.86
10.20
11.14
11.40
12.00
12.44
13.20
13.54
13.83
964 10.72 751
1035 11.41 799
1072 11.72 821
1170
1198
1260
1307
1386
1422
1453
20° PRESSURE ANGLE
100 RPM
200 RPM
300 RPM
2" FACE
600 RPM
900 RPM
REFERENCE PAGE 33 & 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
.63
.83
.93
1.01
1.18
1.46
1.70
1.98
2.25
1559
2097
2345
2551
2981
3671
4294
4986
5660
1.24
1.62
1.81
1.97
2.29
2.81
3.27
3.78
4.27
1565
2046
2284
2480
2889
3541
4122
4763
5381
2.38
3.10
3.45
3.73
4.32
5.25
6.05
6.94
7.77
1502 4.41 1391 6.16
1951 5.67 1786 7.84
2171 6.27 1977 8.64
2351 6.76 2129 9.26
2722 7.74 2440 10.52
3306 9.26 2919 12.44
3815 10.54 3322 14.00
4372 11.92 3755 15.66
4899 13.18 4155 17.17
6 DIAMETRAL PITCH CAST IRON
25 RPM
50 RPM
100 RPM
1294
1647
1814
1945
2210
2613
2941
3241
3607
10.20
12.70
13.85
14.71
16.41
18.93
20.83
22.85
24.60
1072
1334
1455
1545
1724
1988
2188
2400
2584
20° PRESSURE ANGLE
200 RPM
300 RPM
13.06
16.02
17.35
18.30
20.18
22.91
24.88
26.98
28.75
915
1122
1215
1282
1413
1605
1743
1889
2013
15.19
18.42
19.85
20.85
22.79
25.61
27.56
798
967
1043
1095
1197
1345
1448
2" FACE
600 RPM
900 RPM
18.14
21.67
23.20
24.21
26.18
REFERENCE PAGE 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
33
36
42
48
54
60
66
72
84
96
108
120
1.53
1.71
2.04
2.38
2.74
3.01
3.38
3.65
4.30
4.82
5.47
5.97
2.89
3.23
3.81
4.41
5.02
5.48
6.10
6.54
7.59
8.39
9.40
10.13
3641
4066
4807
5563
6333
6910
7691
8245
9566
10579
11583
12770
5.22
5.78
6.73
7.68
8.63
9.30
10.22
10.83
12.30
13.33
14.67
15.54
3288
3644
4244
4843
5440
5860
6443
6827
7752
8404
9245
9793
8.74
9.58
10.91
12.21
13.46
14.26
15.44
16.12
17.83
18.90
20.37
21.20
2755
3018
3439
3847
4243
4494
4864
5080
5620
5955
6420
6680
11.28
12.26
13.76
15.19
16.55
17.35
18.60
19.26
20.98
21.95
23.41
2370
2575
2891
3191
3477
3645
3907
4045
4407
4611
4917
15.90
17.02
18.62
20.09
21.48
22.14
23.39
23.90
3600 RPM
H.P. Torque
635
759
812
848
917
No.
Teeth
3847
4316
5148
6009
6899
7591
8515
9200
10835
12152
13800
15059
3600 RPM
H.P. Torque
3600 RPM
H.P. Torque
1670 18.42 1290
1788 19.56 1370
1955
2111
2256
2326
2457
2511
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
Gear Catalog
49
®
SPUR GEARS
APPROXIMATE HORSEPOWER AND TORQUE* RATINGS
FOR CLASS I SERVICE (Service Factor = 1.0)
5 DIAMETRAL PITCH STEEL
No.
Teeth
12
14
15
16
18
20
25 RPM
50 RPM
20° PRESSURE ANGLE
100 RPM
24
25
28
30
35
40
45
50
60
70
80
100
110
120
140
160
180
300 RPM
600 RPM
900 RPM
REFERENCE PAGE 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.14
1.49
1.67
1.81
2.12
2.44
2865
3756
4198
4565
5332
6141
2.22
2.89
3.23
3.50
4.08
4.68
2794
3647
4069
4416
5138
5894
4.22
5.47
6.08
6.58
7.60
8.66
2662
3449
3833
4146
4789
5456
5 DIAMETRAL PITCH CAST IRON
No.
Teeth
200 RPM
2-1/2" FACE
25 RPM
50 RPM
100 RPM
7.71
9.87
10.90
11.72
13.38
15.07
2431
3110
3435
3693
4216
4750
10.65
13.48
14.81
15.85
17.92
20.02
2237
2832
3112
3329
3766
4205
17.19
21.25
23.11
24.47
27.15
29.79
1805
2233
2427
2570
2852
3129
20° PRESSURE ANGLE
200 RPM
300 RPM
21.61
26.31
28.41
29.89
32.77
35.58
1513
1843
1990
2093
2295
2492
24.80
29.87
32.09
33.61
36.56
39.41
1302 29.09 1019
1569 34.53 1209
1686 36.87 1291
1765
1920
2070
2-1/2" FACE
600 RPM
900 RPM
REFERENCE PAGE 34.
1200 RPM
1800 RPM
H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque H.P. Torque
1.82
1.91
2.21
2.40
2.97
3.47
3.98
4.38
5.32
6.27
7.23
8.71
9.68
10.38
11.70
13.30
14.49
4599
4826
5571
6050
7477
8737
10040
11046
13399
15794
18229
21969
24409
26168
29508
33526
36534
3.48
3.64
4.18
4.52
5.54
6.42
7.31
7.98
9.53
11.06
12.59
14.78
16.22
17.19
18.97
21.13
22.61
4381
4588
5267
5700
6982
8087
9216
10056
12008
13945
15869
18630
20449
21669
23910
26631
28495
6.35
6.63
7.54
8.10
9.78
11.17
12.56
13.53
15.78
17.93
20.00
22.67
24.50
25.58
27.50
29.94
31.40
4002
4177
4750
5108
6164
7040
7916
8528
9944
11300
12605
14288
15439
16125
17334
18870
19787
10.82
11.24
12.60
13.42
15.85
17.75
19.59
20.75
23.48
26.00
28.34
30.92
32.88
33.85
35.49
37.83
38.97
3411
3542
3970
4230
4995
5593
6174
6540
7400
8192
8932
9745
10362
10666
11182
11921
12281
14.15
14.64
16.23
17.18
19.98
22.08
24.09
25.25
28.05
30.58
32.92
2972
3075
3410
3609
4199
4639
5060
5304
5892
6425
6916
20.41
20.97
22.81
23.86
27.04
29.21
31.26
32.22
34.81
2144
2203
2396
2506
2840
3068
3284
3384
3657
23.95
24.51
26.37
27.41
3600 RPM
H.P. Torque
3600 RPM
H.P. Torque
1677
1716
1847
1920
Ratings are based on strength calculation. Basic static strength rating, or for hand operation of above gears is approximately 3 times the 100 RPM rating.
NOTE: Ratings to right of heavy line are not recommended, as pitch line velocity exceeds 1000 feet per minute.
They should be used for interpolation purposes only.
*Torque Ratings (Lb. Ins.).
STAINLESS STEEL GEAR GAUGE SET
14-1/2° and 20° PRESSURE ANGLES
This handy, steel gear gauge set consists of 16 leaves — 24 gauges — to measure both 14-1/2° and 20° pressure angle tooth form, in diametral pitch sizes 64,
48, 32, 24, 20, 16, 12, 10, 8, 6, 5 and 4. Pitch sizes 8, 6, 5 and 4 both 14-1/2°
and 20° are cut on individual leaves. Pitch sizes 64 through 10 inclusive, have
both 14-1/2° and 20° pressure angles on a single leaf.
SOLD ONLY AS A COMPLETE SET
ORDER BY CATALOG NUMBER OR ITEM CODE
50
Gear Catalog
®
Catalog Number
Item Code
Gear Gauge
06000
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