GPM MG213T/0.5M 40Cr Steel 13T Motor Gear (0.5mm module, 2.2mm bore)  [MG213T/0.5M]

13T 40Cr motor pinion for RC drivetrains

This 13T motor gear from GPM is a directable replacement part for electric RC drivetrains that match the listed geometry. Manufactured in 40Cr steel with a hardened black surface treatment, the gear is specified as 13 teeth with a module of 0.5mm and a motor tooth diameter (motor bore) of 2.2mm. The motor bore is round-shaped and the part is retained using two set screws sized 3x3.

In practical use the pinion serves as a compact, durable interface between the motor shaft and the spur or primary gear. Check that the motor accepts a 2.2mm bore pinion and that the target spur gear uses a 0.5mm module before fitting. Because fit depends on accurate mesh and alignment, install the gear with the motor and driven gear in their assembled positions, confirm concentricity, and verify the set screws are seated properly.

For tuning or repair tasks this pinion lets you maintain consistent tooth profile and wear characteristics while swapping tooth counts to adjust gear ratio. The material and surface hardening are intended to increase wear resistance compared with common softer alloys, helping the part hold up under normal RC drivetrain loads.