Makita 513631-1 Spare Part - ARMATURE ASSY 110V HR4011C
Original Makita armature assembly — part no. 513631-1 — direct replacement rotor for Makita HR4001C and HR4011C rotary hammers. This is the rotating motor core (armature/rotor) that works with the field coil and carbon brushes to produce the hammering and drilling action; it’s supplied to original Makita specification to restore proper torque, speed stability and hammer impact.
Key details: precision-balanced laminated steel core with high-grade copper windings and a machined commutator to ensure smooth brush contact and reduced vibration; heat- and abrasion-resistant insulation on the windings to withstand heavy-duty use. Designed to replace a burned or worn armature and return motor performance and service life to the tool.
Compatibility and variants: listed for 115 V / 110–127 V market variants and specifically referenced for HR4001C and HR4011C rotary hammers; some supplier listings also show fitment to HR4010C in certain markets. Check your tool’s model plate before ordering to confirm voltage and model fit.
Practical notes: packaged dimensions are reported approximately 100 × 249 × 100 mm (supplier listing), so the part ships as a complete armature assembly ready to install — it’s the rotating heart of the motor and typically replaced when performance drops, brushes burn, or the commutator is scored. This listing is for genuine Makita replacement parts and will mate with the original brush holders and bearings in the specified models.
If you need the part number 513631-1 to get your HR4001C / HR4011C back in service, this original Makita armature assembly is the direct replacement that restores motor and hammer performance.
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Compatible models this part will fit:
