0.5M 19T 40Cr Steel Motor Pinion MG219T/0.5M for RC Motors by GPM  [MG219T/0.5M]

Pinion Gear Specifications

This MG219T/0.5M pinion is built around a 19-tooth profile and a 0.5mm module, intended for drivetrains where the motor tooth diameter measures 2.2mm. The gear is manufactured from 40Cr steel and surface hardened to improve wear resistance and extend service life.

Fitment notes: the pinion uses a round motor bore sized for the standard 2.2mm motor tooth diameter interface and is retained with two 3x3 set screws. Always confirm the motor shaft size and that the spur gear matches the 0.5mm module and 19T tooth count to ensure correct mesh and avoid premature wear.

Installation tips: slide the pinion flush to the motor shoulder where applicable, tighten each 3x3 set screw alternately and incrementally to prevent misalignment, and check pinion-to-spur backlash under normal load. Small changes to pinion size or mesh can affect torque and top speed, so record adjustments for repeatable tuning.