Product: Genuine Makita part 631227-7 — Electronic Controller / Speed Regulator

Description:

This is the original Makita electronic controller (speed regulator/PCB assembly) part number 631227-7. It’s the internal controller module used to regulate motor speed and power delivery in the tool — a direct replacement for the factory controller so you can restore proper variable-speed operation and safety features without modifying the tool.

Key details:

- Part number: 631227-7 (Makita).

- Function: electronic speed/power controller (internal PCB assembly used in the angle grinder’s trigger/speed circuit).

- Rated for mains in the 200–250 V / 240 V range as listed by parts suppliers (matches the original tool wiring).

- Supplied as the single replacement controller module (sold per unit).

Compatibility (example models):

- Listed for Makita 9227CB and 9237CB (and referenced for the 9237C series in parts listings). Use this part to replace the controller in those models.

Why this part:

If your Makita angle grinder is losing variable-speed control, won’t reach full speed, or the switch/trigger behaves erratically, replacing the controller with the original Makita 631227-7 restores correct electronic regulation and maintains the tool’s designed performance and safety.

(Part listings and exploded-parts references from Makita parts diagrams confirm the above fitment and specifications.)

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