Description
Overview:
This Genuine Makita Field 110V (part no. 621706-3) is a replacement field coil designed for selected Makita angle grinders, including 9556NB and 9557NB. It uses tightly wound copper windings on a laminated steel core, with robust insulation to handle heat and vibration. The field coil creates the fixed magnetic field in the motor, helping the grinder run at the correct speed and torque. Built for 110V site-rated tools, it is a like-for-like replacement for the original component and is intended to restore reliable performance where the existing field has worn or failed. Sized to fit the factory housing, it reconnects to the OEM wiring without modification. Suitable for trade and DIY maintenance of commonly used compact grinders.
Key Features:
- Genuine Makita part for assured compatibility and fit (621706-3)
- Designed for 110V machines, matching the original specification
- Copper windings and laminated steel core for durability and thermal stability
- Restores motor efficiency, power delivery, and speed consistency
- Helps resolve symptoms such as power loss, overheating, or tripping
- Direct replacement that fits the existing stator housing
- Robust insulation to withstand dust, vibration, and site conditions
- Suitable for regular use by tradespeople and DIY users
Typical Applications:
For repairing and maintaining Makita 110V angle grinders used in metal fabrication, construction, and maintenance tasks. Typical work includes grinding welds, bevelling edges, cutting bolts or rebar (with suitable discs), and light masonry preparation. Ideal when a grinder shows reduced power, erratic speed, overheating, or electrical faults traceable to a failed field coil.
Also known as:
Stator, field winding, motor field, excitation coil, stator coil, grinder field, motor stator assembly.
Fits Models:
9556NB, 9556PB, 9557NB, 9557NBR, 9557PB, 9558NB, 9558NBR, 9558PB
Alternate Part Numbers:
6217063
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