40Cr Hardened 22T Motor Gear MG322T/0.5M (Module 0.5mm, 3.175mm) by GPM  [MG322T/0.5M]

22-tooth 40Cr motor pinion description

This 22-tooth motor gear is supplied for RC motor applications and is specified by its main dimensions: 22T, module 0.5mm, and motor tooth diameter 3.175mm. The component is made from 40Cr steel with a hardened black surface to enhance wear characteristics compared with non-hardened counterparts.

Mechanical design: the pinion uses a round centre bore sized to fit motors that match the indicated tooth diameter and is fixed to the motor shaft with two 3x3 set screws, delivering a secure mechanical joint. These attributes are intended to keep gear mesh consistent and limit slippage during typical use.

Compatibility advice: double-check that your motor's pinion parameters are module 0.5mm and a 3.175mm tooth diameter before ordering, as the gear is intended only for motors with matching dimensions. During installation, verify mesh with the spur gear and use suitable locking on the set screws where necessary.

Role in tuning: replacing a worn pinion with a hardened 40Cr unit is a straightforward way to increase drivetrain longevity in builds prone to tooth wear; this piece serves as a direct replacement when measurements match.