GPM MG313T/0.5M 13T Motor Gear 0.5mm Module 40Cr Steel Pinion  [MG313T/0.5M]

This GPM MG313T/0.5M motor gear is an RC-scale pinion designed for direct replacement on motors that match the listed tooth diameter and module. The gear is manufactured in 40Cr steel and receives a hardening black finish to improve surface wear resistance and service life under normal hobby use.

Key geometry: 13 teeth (13T), module 0.5mm, motor tooth diameter 3.175mm, and a round-shaped motor gear hole. The gear is secured to the motor shaft with two set screws (3x3), allowing straightforward mounting on compatible motors. Verify these parameters on your motor before purchase to ensure correct fit.

Installation and tuning notes: fit the gear onto the motor shaft so the set screws contact the flat or keyed section of the shaft, tighten incrementally and check mesh with the spur gear to avoid binding. Changing the pinion tooth count alters the final drive ratio, which affects acceleration and top speed in predictable ways; use this gear as part of ratio tuning rather than for non-RC applications.