The Makita 510123-1 Armature Assembly is a genuine OEM motor component designed to restore full performance to compatible 110V Makita angle grinders, including the GA7020S and GA9020 models. As the rotating core of the motor, the armature is subject to significant wear over time — particularly under demanding site conditions. This replacement unit is constructed with durable copper windings on a laminated steel core, paired with a precision-ground steel shaft and commutator, ensuring efficient power transfer and reliable operation once fitted. Built specifically for 110V AC tools, this armature is well suited to UK construction sites operating via step-down transformers, as well as workshops running 110V equipment. Fitting a replacement armature addresses common symptoms of motor wear, including excessive sparking, reduced power delivery, and overheating — helping restore the tool to its designed speed and torque output. The pre-assembled rotor and commutator make installation straightforward for qualified service technicians and experienced tradespeople. As a direct-fit genuine Makita part, there is no modification required, making it a practical maintenance solution for contractors who rely on their grinders day to day. Features and Benefits: • Genuine Makita OEM part (510123-1) for assured fit and compatibility • Designed exclusively for 110V AC grinders — do not use in 240V machines • Copper windings on a laminated steel core for efficient, reliable motor operation • Precision-ground steel shaft and commutator for consistent performance • Pre-assembled rotor and commutator for straightforward installation • Directly compatible with Makita GA7020S and GA9020 angle grinders • Helps resolve excessive sparking, power loss, and overheating caused by armature wear Specifications: Voltage: 110V AC Part Number: 510123-1 Compatible Models: Makita GA7020S, GA9020

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