GPM Racing 40CR Steel Motor Gear 22T (Module:0.5mm,motor Tooth Diameter:2.2mm) (MG222T/0.5M)

Product Brief

This 40Cr steel 22T motor gear is an RC-scale pinion intended for small electric motors that use a module 0.5mm gear mesh. The hardened black surface treatment improves surface hardness and increases wear resistance under typical model power loads, while the round motor bore is sized for a 2.2mm motor tooth diameter.

Installation notes: the gear fastens to the motor shaft using two 3x3 set screws, and the round hole fits motors that match the specified shaft and tooth diameter. To ensure reliable engagement confirm the module 0.5mm pairing with your spur gear and that the 22T tooth count is compatible with your gearbox geometry before fitting.

Tuning role: this pinion is useful for drivers wanting a compact, wear-resistant option to adjust final drive ratios in electric RC models; swapping pinions with the same module and motor tooth diameter allows tuning of acceleration versus top speed without replacing motor or spur gear parts.

How do I confirm shaft compatibility for this pinion?

Measure your motor shaft and the motor tooth diameter; the pinion requires a 2.2mm motor tooth diameter and set-screw mounting. Ensure there is adequate clearance for the two 3x3 set screws before proceeding.

What is the correct procedure to fit the pinion?

Locate the desired mesh position, place the pinion on the shaft, and tighten the two 3x3 set screws alternately to seat the gear without shifting. Check mesh under slow rotation and re-tighten if necessary.

Are there any recommended maintenance intervals?

Inspect gear teeth and set screws after initial installation and after extended use. Clean debris from the mesh, check for wear or deformation, and replace the pinion if significant wear appears. 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.