Original Makita part 227359-2 — Spur Gear (10 teeth). This straight (spur) gear is a direct replacement gear used in the drive/gear-train (gear housing/tool-holder area) of Makita rotary hammers; it’s listed in Makita parts breakdowns as "SPUR GEAR 10" and replaces the original item in those assemblies.
Fits (example models): HR2630, HR2631 / HR2631F, HR2641, HR2651 and HR2653. If your hammer’s symptoms are noisy gearing, skipping teeth, or a failed drive engagement, this original Makita spur gear restores the correct tooth profile and timing in the gear train.
What you’re getting: the genuine Makita spare gear (part no. 227359-2) with the correct 10-tooth geometry to mesh with the matching gear set in the rotary-hammer gearbox — designed to match the same installation position so it installs into the existing gear housing without modification.
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