Description
Overview:
The Armature Assembly 110v for HM1810 hammer drills is a genuine Makita replacement part (MPN 516920-3) that restores the motor's core rotating element. It uses precision-wound copper coils on a laminated steel core with a machined commutator to deliver efficient power transfer and smooth running. Designed for 110v site tools, it is suitable for UK construction environments using centre-tapped transformers. This assembly is built for heavy-duty use in breakers and demolition hammers, helping maintain impact performance and reliability. Compatible with the Makita HM1810 and HM0870C, it supports correct motor function, reduces arcing, and helps extend brush life when installed with sound bearings and brushes. As a genuine Makita part, it provides assured fit and performance within the intended models.
Key Features:
- Genuine Makita part for reliable fit and specification
- Designed for 110v tools used on UK site power systems
- Copper windings and laminated steel core for efficient output
- Precision-balanced rotor helps reduce vibration and wear
- Machined commutator supports stable brush contact and reduced arcing
- Built to handle dust, shock loads, and continuous use in demolition work
- Restores lost power and blow rate in compatible hammer drills
- Suitable for straightforward replacement using standard workshop practices
Typical Applications:
Used to replace a worn, burnt, or damaged rotor in a 110v Makita demolition hammer. Typical situations include loss of power, excessive sparking at the brushes, overheating, or visible commutator damage. Ideal for maintenance of breakers used for concrete breaking, chasing, and heavy chiselling on construction sites and in hire fleets. Helps return the tool to dependable day-to-day operation when paired with serviceable brushes and bearings.
Also known as:
Armature, rotor, motor rotor, commutator rotor, drill motor armature, hammer drill rotor, electric motor armature assembly, rotor shaft, rotating armature, motor core.
Fits Models:
HM0870C, HM0871C, HM1810
Alternate Part Numbers:
513791-9, 5137919, 5169203
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