MG522T/0.5M 45 Steel 22T Motor Gear, 48 Pitch, 5mm Dia by GPM  [MG522T/0.5M]

Technical summary and material notes

The pinion identified as MG522T/0.5M is a 22T, 48-pitch component produced from 45 steel, featuring a 0.5mm module and a motor tooth diameter of 5mm. It is suited to electric hobby models that require matching 48-pitch gearing and a 5mm motor shaft interface.

This component's main function is to convey motor torque into the drive system while defining the initial gear ratio. A 22-tooth pinion shifts the balance toward acceleration relative to higher tooth counts. The 45 steel material was chosen for hardness and wear resistance under repeated mesh cycles typical of RC use.

Installation guidance—verify pitch and module match the spur, confirm the 5mm shaft interface is correct, and fasten using compatible clamp or set-screw hardware following the motor maker's guidance. Check backlash and mesh pattern before running and after a brief break-in to ensure stable engagement.

Compatibility and tuning context—compatibility is driven by numeric specifications like pitch, module, and shaft diameter rather than chassis model lists; treat this pinion as a tuning item to alter overall ratio and vehicle response.