40Cr 13T Motor Pinion MG213T/0.5M for 0.5mm Module, 2.2mm Bore by GPM  [MG213T/0.5M]

13T 40Cr pinion tailored for electric RC drivetrains

This 13T pinion is supplied for electric RC drivetrains that correspond to the stated dimensions. Manufactured from 40Cr steel and finished with a hardened black coating, the item has 13 teeth, a 0.5mm module and a 2.2mm round motor bore. Retention is achieved with two 3x3 set screws.

Functionally the pinion serves as the connection between the motor shaft and the spur or primary gear, delivering a compact and robust interface. Ensure the motor accepts a 2.2mm bore and that the mating gear uses 0.5mm module before fitting. Proper mesh and alignment are crucial: fit with the drivetrain assembled, check concentricity, then secure the set screws.

For repairs and gearing changes the pinion enables tooth-count swaps to tune ratio while maintaining consistent tooth form. The hardened treatment on the 40Cr material is intended to reduce wear compared with softer metals under standard RC drivetrain stresses.