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"Easy" Gear Selection Screen

- Choose a gear by pitch, # of teeth, or bore size.
- 2D/3D Drawings Available
- PDF Catalog Available
- Strength Calculation Available

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What is an outside diameter ?

The outside diameter (or the tip diameter) is the diameter of the circle produced by connecting the tooth tips. In standard gears, the outside diameter can be expressed as a formula as shown below.

da = d + 2m
where d is the pitch circle diameter and m is the module.

Also, in the diagram below, da is the outside diameter.
outside diameter

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