GPM Racing 40CR Steel Motor Gear 20T (Module:0.5mm,motor Tooth Diameter:2.2mm) (MG220T/0.5M)

MG220T/0.5M 20T Motor Pinion Summary

The MG220T/0.5M is a 20-tooth motor pinion supplied as a replacement or spare for motors matching its tooth profile and shaft dimensions. Essential measurements provided include 20T, module 0.5mm, and motor tooth diameter 2.2mm. The bore is round and the part is retained with two 3×3 set screws.

Manufactured from 40Cr steel with a darkened finish, the pinion reduces initial surface glare and supports baseline wear resistance versus untreated materials. This material selection aims to keep tooth geometry stable under typical hobby loads and to ensure consistent engagement with compatible spur gears.

Always verify the pinion module and motor tooth diameter against your motor and spur prior to purchase. Proper mesh and shaft seating are vital: slide the pinion onto the shaft, set correct backlash with the spur, then tighten the two set screws evenly to avoid shifting. Use only with motors that match the listed specifications.

What are the basic installation steps for this pinion?

Check module and motor tooth diameter, fit the pinion to the shaft, set mesh with the spur, then tighten both 3×3 set screws evenly. Recheck alignment after a short run.

How does the supplied finish affect performance?

The darkened surface finish reduces glare and offers initial wear resistance. Long term durability depends on load, accuracy of mesh, and routine maintenance.

Are there special precautions for set screw torque?

Tighten the set screws evenly and avoid excessive torque to prevent thread damage. If desired, use a suitable threadlocker and check tightness after initial use. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.