The MG522T/0.5M pinion is a 22-tooth, 48-pitch gear made from 45 steel, specified with a 0.5mm module and a 5mm motor tooth diameter. It is designed for electric hobby models that require a 48-pitch pinion and a 5mm shaft interface.
This pinion transfers torque from the motor into the drivetrain and establishes the initial gearing step. With 22 teeth it shifts gearing toward stronger acceleration relative to larger pinions, and the 45 steel construction helps resist wear from repeated mesh cycles.
Basic installation guidance—confirm pitch and module match the spur gear, ensure the 5mm shaft seats properly, and secure the pinion with suitable fastening hardware. Set mesh carefully, check backlash, and re-check after a short run to account for seating and settling.
Fit and tuning considerations—verify numeric compatibility (pitch, module, tooth count, shaft diameter) when selecting this pinion. Use it as a tuning component to adjust overall gear ratios and vehicle response rather than as a chassis-specific replacement.