Makita 513633-7 — Armature assembly (rotor), 220–240 V. This genuine Makita armature (rotor) assembly replaces the rotating core in SDS‑Max rotary hammers and is listed for use in HR4001C, HR4010C and HR4011C models.
Technically it’s a precision‑wound rotor with a laminated steel core, machined commutator and balanced steel shaft; the part is supplied as the complete rotor/armature unit , so it mates with your existing brushes and field coil to restore proper motor function.
Why this part matters: a worn or damaged armature is the usual cause of heavy sparking, loss of power, overheating or rough running — replacing it brings back smooth torque and reliable hammer action. As a genuine Makita parts item, it’s the direct replacement specified for the models above.
This is a straightforward repair component in the range of common power tool parts — order the 513633-7 armature when you need the correct rotor geometry and electrical characteristics restored to your Makita rotary hammer.
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