Makita 638447-4 Spare Part - BRUSH HOLDER UNIT HR1317C-CB/H

632D00-2 supersedes older part numbers: 638447-4

Makita 632D00-2 — Brush Holder Unit (genuine Makita)

Bring your Makita rotary/demolition hammer back to reliable service with this original Makita brush holder unit (part no. 632D00-2). This is the plastic/metal carrier that secures the carbon brushes against the commutator, keeping consistent electrical contact under heavy load and heat. A worn or heat-damaged holder is a common cause of excessive sparking, intermittent running, or loss of power; replacing the holder restores correct brush alignment and helps reduce brush and commutator wear.

Key details

- Part: Brush holder unit, Makita 632D00-2 (sometimes shown as 632D002).

- Replaces Makita service number 638447-4 on some tool parts lists.

- Construction: molded holder with metal contacts designed to accept the tool’s original carbon brushes and fit the factory motor housing without modification.

Compatibility (examples)

Fits and is listed for several Makita rotary/demolition hammer models, for example: HM1307 / HM1307C, HM1203C, HM1317, HR5210C and other similar HM/HR-series units. Check your tool’s parts list or service tag to confirm exact fit for your model.

Why this part matters

If your hammer shows heavy arcing at the commutator, loses power under load, or runs intermittently, the brush holder can be the root cause even when the brushes themselves still have life. Installing this genuine Makita brush holder restores correct brush pressure and alignment so the motor runs smoother and the brushes wear more evenly.

What you get

One original Makita 632D00-2 brush holder unit — direct-fit replacement for the listed models and a straightforward repair that avoids unnecessary motor damage when done with the correct brushes and basic disassembly.

(For exact compatibility confirm against your tool’s parts diagram or the service sticker — the listings above reflect common model matches reported in parts catalogs.)

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