Genuine Makita brush holder unit — part 638500-6. Direct replacement brush-holder assembly for Makita SDS‑Plus rotary hammers; it secures the carbon brushes (Makita carbon brush set CB‑325, part 195001-2) inside the motor housing and restores correct brush travel and electrical contact.
Key features:
- Makita part number: 638500-6, listed as BRUSH HOLDER UNIT in Makita parts diagrams and price lists.
- Designed to accept Makita carbon brushes CB‑325 (Sold separately under part number : 194074-2 ).
- Replacement for the brush holder assembly used on Makita SDS‑Plus rotary hammer models such as HR2230, HR2460 and HR2470 and HR2470FT / HR2470T — fits the same motor / housing locations shown in the Makita parts breakdowns.
Why this part matters:
- If brush caps, terminals or the holder body are cracked, loose or burned, the motor will run intermittently or not at all; swapping the brush holder back to the original Makita assembly restores secure mounting and proper brush movement.
Sold as the complete brush-holder unit (install into the motor housing and install the CB‑325 brushes and brush caps as shown in the parts diagram).
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