Genuine Makita 227386-9 — Spur Gear (31 teeth). Precision-machined metal spur gear that restores the gearbox drive in Makita 150 mm random-orbit sanders; designed as a direct replacement to return smooth, quiet orbital motion and eliminate chatter or slipping.

Key details:

- Part: Makita 227386-9 — Spur Gear, 31 teeth (straight spur type).

- Fits (example models): Makita BO6050 / BO6050J 150 mm random-orbit sanders (the BO6050 series uses this spur gear in the gearbox).

- Gear engagement: mates with the sander’s internal gear (Makita 227387-7) and the adjacent bevel/drive gears in the gearbox assembly — sold as the single replacement spur gear.

- Notes: listed as the direct Makita replacement, so it installs into the original gearbox without modification.

If your BO6050-series sander has worn or damaged gear teeth, this genuine Makita 227386-9 spur gear is the exact part used in the original gearbox to bring back correct pad rotation and orbital action.

Jump straight to the Makita spare parts diagrams:

Makita BO6050 Parts

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