3Racing 48P 20T Pinion Gear - Race Grade Hard Coated 7075  [3RAC-PG4820]

3RACING 48 Pitch Pinion Gear 20T (7075 w/ Hard Coating) - 3RAC-PG4820
Price:
USD$3.80
Brand:
3Racing
Model:
3RAC-PG4820
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Setup Focused 3Racing 48P 20T Pinion

Developed for racers who change gear ratios frequently, the 3Racing 48 Pitch Pinion Gear 20T combines a precise tooth form with a hard coated 7075 aluminium body. The construction keeps rotating mass low while providing surface wear resistance so gear geometry remains stable across multiple runs and setup changes.

Materials and Performance

The selection of 7075 aluminium gives high yield strength while minimising weight penalty, which benefits acceleration responsiveness. The hard coat improves contact surface durability and reduces micro abrasion, helping maintain efficient power transfer under repeated high load cycles.

Application and Tuning Notes

This 20 tooth 48 pitch pinion is suitable for a wide range of competition 48 pitch spur gears and motor configurations. For tuning, start with standard mesh settings and log performance changes when adjusting tooth counts or spur sizes to find the optimal balance between acceleration and top speed.

What shaft sizes are compatible with this pinion?

Check motor shaft diameter and set screw type before fitting. The pinion is commonly used on standard 3.17 mm and 5 mm shafts with the matching bore or adapter sleeve.

Any recommendations for run in and bedding?

Perform a short break in at moderate throttle to allow minor seating of the gear mesh. Recheck mesh and fastener torque after the initial runs to ensure stability.

When should I choose steel over 7075?

For extreme duty, repeated impact scenarios, or very high torque setups, hardened steel pinions offer superior abrasion resistance. 7075 with hard coat is preferred where weight and quick acceleration response are priorities.