MG520T/0.5M 20T 45CR Steel Pinion (48 Pitch, Module 0.5mm) by GPM  [MG520T/0.5M]

Price:
£5.13
Brand:
GPM
Model:
MG520T/0.5M
Condition:
Brand New
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Pinion Gear — Key Details

Designed for RC-scale motor swaps, this pinion is formed from 45CR steel and intended as a direct replacement where dimensions match. It carries 20 teeth (20T), a 48 pitch, module 0.5mm profile, and a rounded motor hole compatible with motors specifying a 5mm motor tooth diameter.

Dimensions used for setup include overall thickness of 10mm, tooth face thickness of 5mm, and a tooth face outer diameter of 12mm. These dimensions should be referenced when adjusting mesh to your spur and confirming motor shaft/set screw alignment.

Fitment guidance: ensure the rounded hole seats on the motor boss, secure with the supplied screw shaft, verify axial position for correct mesh, and inspect engagement again after an initial run-in. The pinion is intended solely for electric scale RC usage and not for real vehicle service.

Contents of Package

  • Motor Gear 20T - 1pcs
  • Screw Shaft 3x3 - 1pcs

Which motor bosses will accept this pinion?

It is sized to fit motor bosses that use a 5mm motor tooth diameter; confirm the rounded hole makes full contact with the boss face before tightening the screw.

Should I expect any special wear characteristics with 45CR?

45CR is a durable steel commonly used for pinions; normal wear patterns should be monitored and mesh adjusted if you notice accelerated wear in high-stress setups.

What is the quickest way to confirm correct installation?

After seating and tightening, rotate the drivetrain by hand to check for even tooth contact and smooth rotation; re-tighten and re-check after a brief low-speed run.

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