RC Motor Pinion 20T 0.5M MG220T/0.5M 40Cr Steel by GPM  [MG220T/0.5M]

40Cr Steel Motor Gear 20T ( Module:0.5mm, Motor Tooth Diameter:2.2mm) - GPM MG220T/0.5M
Price:
AUD$11.11
Brand:
GPM
Model:
MG220T/0.5M
GTIN:
4894538411553
Condition:
Brand New
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20T Motor Pinion Gear (0.5M)

The MG220T/0.5M is specified as a 20-tooth motor pinion for use where the tooth profile and shaft fit match its dimensions. Dimensions to check are 20T, module 0.5mm, and motor tooth diameter 2.2mm. The round bore accepts motors matching that tooth diameter and the part is secured using two 3x3 set screws.

Made from 40Cr steel with a darkened finish, this pinion aims to offer stable dimensions and an initial level of surface protection compared with untreated metal. That translates into consistent engagement with compatible spur gears under typical hobby loads.

Before fitting, confirm the pinion module and motor tooth diameter with your motor and spur gear. Proper mesh and correct shaft seating prevent premature wear: place the gear on the motor, set backlash with the spur, then tighten both set screws evenly. This pinion fits motors matching the listed specs only.

Which spur sizes are commonly paired with a 20T pinion for tuning?

Pairing depends on desired gear ratio: a larger spur gives more torque and slower top speed, while a smaller spur raises top speed. Calculate ratio using pinion and spur tooth counts.

Is this pinion suitable for high-power motors?

The 40Cr construction provides dimensional stability for common hobby power levels, but always check shaft diameter and keying. High-power setups may require hardened or specialised pinions and careful maintenance.

How should I set backlash for best drivetrain life?

Start with a small clearance so teeth do not bind, then run the drivetrain briefly and recheck under load. Adjust until engagement is even across the tooth face without excessive play.

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