Different Types of Gears

 

Different Types Of Gears There are many different types of gears. For the  purposes of this section we will focus on  different gear geometry and not different quality, materials, etc...  No matter how long I spend working with gears, I seem to always run into some new ones that I have never heard of   before. I am focusing on the most common types of gears and if I miss any, or you know of some not listed in this section, please feel free to email us and we will gladly ad them to our list. [email protected] [email protected]   Each type of gear has its own purpose as well as unique advantages and disadvantages. We will try to address as much information on each type of gear as possible.

Gear Type  Spur Gears

Types Of Gears   Description  Spur gears are by far the most common type of gear and with the exceptions of the "cog" the type of gear that has been around the longest.

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Spur gears have teeth that run r un perpendicular perpendicular to tthe he face of the gear. Click Image To Enlarge Helical Gears

Helical are very similar to spur exceptare the teeth aregears not perpendicular to the face.gears The teeth at an angle to the face giving helical gears more tooth contact in the same area. Helical gears can also a lso be used on non-parallel shafts to transmit motion.

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Helical gears tend to run quieter and smoother than spur  gears due to the increased number of teeth in constant contact at any one period of time. Herringbonee Gears Herringbon Gears

Herringbone gears resemble two he helical lical gears that h have ave  been placed side by side. They are often referred to as "double helicals". One benefit of herringbone gears is that it helps to avoid issues related to side thrust created with the use of  helical gears.

Click Image To Enlarge Bevel / Miter Gears Gears  power Bevel gears ge are used mostly mos in si situations requ require ire toars be transmitted attly right atuations angles ngles (orthat applications that are not parallel). Bevel gears can have different angles of application but tend to be 90 °.  Click Image To Enlarge Worm Gears

Worm gears are used to tra transmit nsmit power at 90° and where high reductions are required. The worm resembles a thread that rides in concaved or helical teeth.

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Internal Gears

Internal gears typically resemble inverted spur gears but are occasionally cut as helical gears.

Racks

A rack is basically a straight gear used to transmit  power and motion in a linear movement.

Face Gears

Face gears transmit power at (usually) right angles in a circular motion. Face gears are not very common in industrial application.

Involute Splines

Splined shafts and hubs are usually used as connectors in many different types of applications. One of the most common applications is to connect motors to gear  reducers. They may also be used in transmissions.

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Involute splines resemble spur gears, but tend to have different pressure angles. Straight Sided Splines

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Straight sided splines often serve the same function as involute splines but have "straight sided" teeth instead of involute teeth. Click On Image To Enlarge

 

Sprockets

Sprockets are used to run chains or belts. They are typically used in conveyo conveyorr systems.

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