GPM Racing 40CR Steel Motor Gear 19T (Module:0.5mm,motor Tooth Diameter:2.2mm) (MG219T/0.5M)

Motor Pinion Gear Details

This MG219T/0.5M is an RC-scale motor pinion designed around a 19-tooth profile and a 0.5mm module, intended for use in model drivetrains where the motor tooth diameter is 2.2mm. The pinion is made from 40Cr steel and treated for harder surface resistance to wear, intended to provide a longer service life compared with untreated stock gears.

Key fitment features include a round motor bore sized for standard 2.2mm motor tooth diameter interfaces and a retention method using two 3×3 set screws. Before installation confirm the motor shaft and spur gear module match the listed 0.5mm module and 19T tooth count to ensure correct mesh and avoid premature wear.

Installation notes: mount the pinion onto the motor shaft with the bore flush to the shaft shoulder when applicable, tighten each 3×3 set screw incrementally to avoid misalignment, and verify pinion-to-spur mesh by checking backlash under normal wheel load. During tuning, small changes to pinion size or mesh can affect torque and top speed in the RC drivetrain; keep records of changes so you can revert settings if needed.

What motor specs must match this pinion?

The motor must accept a pinion with a 2.2mm motor tooth diameter and match a 0.5mm module; also confirm the 19T tooth count fits your spur gear ratio.

How should the set screws be tightened?

Tighten the two 3×3 set screws alternately and incrementally until secure, avoid over-torquing, and use thread locker only if you need extra retention.

Can this pinion improve durability?

The 40Cr steel and surface hardening offer improved wear resistance compared with untreated gears, but proper mesh and maintenance remain essential for longevity. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM’s factory, so please allow around 14 days for dispatch.