Description
Overview:
This Genuine Makita armature assembly is the rotating core of the electric motor used in 240 V angle grinders, restoring smooth, efficient power delivery when the original part is worn or damaged. Built around a laminated steel core with tightly wound copper coils and a precision-machined commutator, it is engineered for durability and consistent performance. The factory-fitted cooling fan and drive pinion suit the compact grinder format for reliable torque transfer and heat management. Designed for UK 240 V mains tools, it is an exact replacement for OEM No. 517649-4 and maintains the correct clearances and balance inside the motor housing. Ideal for Makita models such as the GA4034 and GA453, it helps keep cutting and grinding tasks accurate and controlled.
Key Features:
- Genuine Makita part for reliable fit and performance on 240 V machines
- OEM specification (517649-4) to maintain original grinder power and speed
- Copper windings on a laminated steel core for efficient energy transfer and long service life
- Precision commutator for stable current flow and reduced sparking
- Factory-fitted cooling fan to manage heat during continuous use
- Correct drive pinion profile for positive engagement with the gearbox
- Dynamic balance helps minimise vibration for smoother grinding
- Direct replacement to restore output after overheating, shorted windings, or commutator wear
- Supports proper brush seating and consistent motor braking where fitted
- Straightforward swap with standard workshop tools, reducing downtime
Typical Applications:
Used to repair Makita 240 V angle grinders that have lost power, run hot, or arc at the brushes. Suitable for metal fabrication, site work, masonry cutting, workshop grinding, and maintenance tasks where dependable motor performance is required.
Also known as:
Motor armature, rotor assembly, grinder rotor, commutator rotor, replacement armature, electric motor rotor for angle grinder.
Fits Models:
GA4030R, GA4034, GA453, GA4530R, GA4534, GA5030R, GA5034
Alternate Part Numbers:
5176494
