20 Tooth 0.5 Module Motor Pinion MG220T/0.5M 40Cr Steel by GPM  [MG220T/0.5M]

0.5 Module 20T Motor Pinion Overview

The MG220T/0.5M is a 20-tooth motor pinion designed for motors whose tooth profile and shaft interface match the specified dimensions. Critical measurements are stated to let you confirm compatibility: 20T tooth count, module 0.5mm, and a motor tooth diameter of 2.2mm. The bore is round and intended for motors with that diameter and the pinion is fastened with two 3x3 set screws.

Produced in 40Cr steel with a subdued surface finish, the pinion reduces initial glare and provides baseline wear resistance compared to raw steel. For typical hobby loads this material choice supports consistent tooth geometry and reliable meshing with corresponding spur gears.

Prior to purchase, verify the pinion module and motor tooth diameter against your motor and spur. Correct mesh and shaft seating are essential: install the gear onto the shaft, set appropriate backlash with the spur, then tighten the two set screws evenly to avoid misalignment. Only use this pinion with motors matching the stated specifications.