13-Tooth 0.5M Motor Gear MG313T/0.5M for 3.175mm Shafts by GPM  [MG313T/0.5M]

The MG313T/0.5M pinion is produced as an aftermarket RC motor pinion for motors matching the stated tooth diameter and module. Fabricated from 40Cr steel, the gear is treated with a hardened black coating to reduce surface wear and help prolong life during regular hobby use.

Geometry details: 13 teeth (13T), 0.5mm module, motor tooth diameter 3.175mm, and a round bore for the motor shaft. Attachment is via two 3x3 set screws, making mounting straightforward on motors that meet these dimensions. Confirm your motor measurements before fitting to avoid incompatibility.

Fitting advice: align the pinion so the set screws bear on a flat or keyed section of the shaft, tighten each screw gradually and verify spur/pinion mesh to prevent binding. Swapping pinion sizes changes the drive ratio and will affect acceleration and top speed, so use this component when adjusting gearing for desired performance.