This GPM MG314T/0.5M motor pinion is an RC-scale replacement pinion intended for small electric models where the pinion specifications match. It uses 40Cr steel with a hardened black finish to provide improved wear resistance and consistent meshing under normal RC operating conditions.
Key mechanical details: 14 teeth, module 0.5mm, motor tooth diameter 3.175mm, and a round-shaped motor gear bore secured by two 3x3 set screws. These fixed features determine fitment and engagement with a matching spur gear and gearbox arrangement.
Installation and tuning notes: confirm the pinion's module, tooth count, and 3.175mm motor tooth diameter against your motor and spur gear before purchasing. When fitting, slide the pinion onto the motor shaft, align the gear face with the spur for correct backlash, then tighten both 3x3 set screws incrementally to avoid shaft binding. Changing pinion tooth count alters gear ratio, so select a tooth count that matches your tuning goals and drivetrain limits.
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