Description
Overview:
The Armature Assembly 240v (part no. 513793-5) is a genuine Makita replacement for the motor in the HM0870C and HM0871C hammer drills. Built with copper windings and a laminated steel core, it restores efficient power transfer and smooth rotation inside the motor. The assembly includes the commutator and a moulded cooling fan to help manage heat under heavy use. Designed for 240 V mains supply, it is suitable for UK users who need dependable performance on site or in the workshop. Fitting a fresh armature resolves issues such as excessive sparking, loss of power, and overheating, helping your hammer drill run reliably again. This is a Genuine Makita OEM part for users who want correct fit, proper balance, and long service life.
Key Features:
- Genuine Makita OEM armature (513793-5) for 240 V tools
- Direct-fit replacement for HM0870C and HM0871C, no modifications required
- Copper windings and laminated core for strong torque and efficient operation
- Precision-balanced rotor and machined commutator for reduced vibration and smoother running
- Integrated cooling fan to aid airflow and thermal control
- Robust insulation and resin coating help resist dust, abrasion, and electrical arcing
- Restores consistent speed under load and reduces motor sparking
- Supports longer tool lifespan when paired with correct brushes and proper maintenance
- Suitable for professional sites, hire fleets, and DIY repairs
- Designed to meet Makita's original specifications for fit and performance
Typical Applications:
Used to replace a worn or damaged motor armature in Makita 240 V hammer drills working on concrete, masonry, and stone. Common in site repairs, preventative maintenance, and overhauls where power loss, overheating, or excessive sparking is present. Ideal for trade users, maintenance teams, and hire centres.
Also known as:
Armature rotor, motor rotor, commutator rotor, electric motor armature, drill rotor, rotor core, replacement rotor pack, rotating core assembly, motor armature assembly, power tool motor component.
Fits Models:
HM0870C, HM0871C
