Makita Armature Assembly (part number 515291-5) — direct replacement armature/rotor for Makita rotary hammers. This genuine Makita armature is the rotating core of the motor with precision-balanced copper windings and a laminated steel core plus commutator surface to restore smooth starting, stable speed under load, and reduced sparking at the brushes.
Designed for the 110–115 V HR2811 series (commonly fitted to HR2811F, HR2811FT and HR2811FX models), the assembly installs in the motor housing to drive the gearbox and return your tool’s drilling and chiselling performance to spec. This is a straightforward replacement among Makita parts when the original rotor shows heavy wear, burnt commutator bars, or excessive vibration.
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