40Cr Hardened 14T Motor Pinion MG314T/0.5M (3.175mm, 0.5mm Module) by GPM  [MG314T/0.5M]

40Cr Hardened Pinion Technical Summary

The MG314T/0.5M is an RC replacement pinion for small electric models requiring a 0.5mm module and a 3.175mm motor tooth diameter. The 40Cr steel construction and hardened black finish help improve wear life and consistent tooth engagement under normal operating conditions.

Key mechanical details: 14 teeth, module 0.5mm, motor tooth diameter 3.175mm, and a round motor bore clamped by two 3x3 set screws. These dimensions and the fastening method determine fit with the matching spur gear and gearbox components.

Installation and tuning notes: verify the MG314T/0.5M module, tooth count, and 3.175mm diameter against your motor and spur before buying. When installing, slide the pinion onto the shaft, align the gear face with the spur to set correct backlash, and then tighten each 3x3 set screw a little at a time to avoid binding. Selecting a different tooth count will change the gear ratio, so choose a count that suits your tuning objectives and drivetrain constraints.