Genuine Makita armature (rotor) 619165-3 — a direct-fit rotating motor assembly designed to replace a worn or burnt rotor in compatible 18 V cordless hammer/drill models.
This compact rotor features a laminated steel core with tightly wound copper coils and a machined commutator so it mates with the original brushes, field (stator) and bearings for correct electrical characteristics and smooth, low-vibration running. It’s balanced and pre-assembled for straightforward installation, helping restore lost power, excessive sparking or rough running.
Example models this part commonly fits include BDF451, BHP451 and DHP451 series drills (and several regional variants such as BDF451RFE, BHP451SFE and DHP451RFE), plus related small cutters listed under the same motor family. This part is listed among Makita spare parts as the original 619165-3 rotor.
If your drill shows overheating, burning smell from the motor, heavy brush sparking, or a big drop in torque, replacing the armature with this genuine Makita 619165-3 rotor will return the motor to original running characteristics without modifying the tool.
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