Description
Overview:
The Armature Assy 110v (517851-9) is a genuine Makita replacement rotor for select 110 V angle grinders, built to restore motor performance and reliability. Manufactured with high-grade enamelled copper windings, a precision-machined commutator, and a robust laminated steel core, it forms the rotating heart of the grinder's motor. This assembly is engineered for the demands of site and workshop use, helping maintain smooth running, strong torque, and consistent speed under load. Designed specifically for Makita GA7050 and GA9050 models, it provides a direct-fit solution when the original armature is worn, burnt, or causing excessive sparking. Ideal for UK 110 V site transformer setups, it supports dependable operation in metalworking, construction, and maintenance tasks where uptime and safety matter.
Key Features:
- Genuine Makita OEM part for assured fit and compatibility (517851-9)
- 110 V rated for UK site transformer use and professional environments
- Direct replacement for GA7050 and GA9050 for straightforward installation
- High-quality copper windings and laminated core for durability and efficiency
- Precision commutator for stable brush contact and reduced arcing
- Factory-balanced rotor helps minimise vibration and wear on bearings and gears
- Restores lost power, speed stability, and cutting/grinding performance
- Heat- and dust-resistant insulation varnish for longer service life
- Supports smooth start-up and reliable running when paired with good brushes
- Built to handle regular heavy-duty use in trade and hire environments
Typical Applications:
Used to refurbish Makita angle grinders that show power loss, overheating, or sparking, returning them to reliable service. Suitable for metal fabrication, site cutting and grinding, masonry preparation, surface dressing, and general maintenance work. A practical choice for trades, plant hire, and workshops maintaining GA7050 or GA9050 machines on 110 V systems.
Also known as:
Armature, rotor, motor rotor, armature rotor, commutator rotor, rotating assembly, motor armature assembly, rotating core. Commonly referenced when diagnosing motor faults such as burnt windings, scored commutators, or excessive sparking under load.
Fits Models:
GA7050, GA9050
Alternate Part Numbers:
5178519
