GPM MG322T/0.5M 40Cr Steel Motor Gear 22T (Module:0.5mm, Motor Tooth Diameter:3.175mm)  [MG322T/0.5M]

40Cr 22T motor pinion

This 22-tooth motor gear from GPM is specified for RC motor use and is described by its core dimensions: 22T, module 0.5mm, and motor tooth diameter 3.175mm. The gear body is 40Cr steel with a hardened black surface treatment to improve wear resistance compared with untreated stock gears.

Design details: the motor gear uses a round-shaped centre hole sized for motors matching the listed tooth diameter, and it is secured to the motor pinion shaft using two 3x3 set screws for a reliable mechanical joint. These features are intended to ensure consistent mesh and reduce slippage under normal RC load conditions.

Fitment and selection: confirm your motor's pinion parameters—module 0.5mm and 3.175mm motor tooth diameter—before ordering, as the gear is intended for motors that match these dimensions. When installing, check gear mesh with the spur gear and use proper thread locking on the set screws where appropriate for your setup.

Tuning role: swapping to a hardened 40Cr steel pinion is a common maintenance or tuning step for RC drivetrains that need improved durability, especially in builds where tooth wear from abrasive use is a concern; expect the part to serve as a direct replacement where dimensions match.