GPM Racing 40CR Steel Motor Gear 17T (Module:0.5mm,motor Tooth Diameter:2.2mm) (MG217T/0.5M)

17T Motor Pinion for 0.5mm Module

The MG217T/0.5M motor pinion is a 17-tooth gear made from 40Cr steel and finished in hardened black to resist wear. It is cut for a 0.5mm module and fits motors with a 2.2mm bore.

The pinion uses a round motor hole and is fastened with two 3x3 set screws for secure mounting on compatible motor shafts. Always confirm your motor's module and bore prior to fitting to ensure correct meshing.

Designed for replacement or ratio tuning, the MG217T/0.5M does not change basic gear geometry; the hardened surface improves durability but proper mesh and backlash checks remain essential during installation.

Which dimensions should I measure before buying?

Measure the module and the motor bore: this pinion requires a 0.5mm module and a 2.2mm bore for correct fitment.

How is the pinion held onto the shaft?

It is retained using a round motor hole and two 3x3 set screws. Tighten the screws evenly and check for axial play after securing.

Does the hardened treatment change the tooth profile?

The hardened black coating improves surface wear resistance without altering the tooth dimensions; verify mesh and backlash during setup to ensure proper engagement. 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.