619372-8 supersedes older part numbers: 619247-1
Original Makita armature 619372-8 — a direct replacement rotor assembly designed to restore motor performance in compatible Makita impact drivers.
Fits common Makita models including BTD140, BTD142, BTD146 and DTD146 impact drivers.
The part comes as the complete armature/rotor with fan and bearings (commutator end bearing included); when fitting it’s recommended to check and service the carbon brushes at the same time to ensure long life.
Key dimensions to verify against your old rotor: overall length 72 mm; lamination (stack) diameter 31 mm with stack length ~11 mm; commutator diameter ≈15 mm; bearing spacing ~42 mm; shaft tail with a 7‑tooth straight spline.
A genuine Makita replacement built to factory tolerances — a practical pick from Makita spare parts to get your impact driver running reliably again.
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