48M521 - Walter Grinder Replacement Armature Assembly

Technical Overview of the Walter 48M521 Armature

The Walter 48M521 Armature With Gear & Pinion is a critical internal component designed for the repair and maintenance of specific Walter Surface Technologies angle grinders. As the rotating part of the electric motor, the armature is responsible for converting electrical energy into mechanical motion. This assembly is an Original Equipment Manufacturer (OEM) part, ensuring that the electrical specifications, physical dimensions, and material quality match the tool's original engineering standards exactly.

This unit comes pre-assembled with the necessary drive components, including the pinion gear and the cooling fan. The integration of the gear and pinion directly onto the shaft simplifies the repair process and ensures proper gear meshing with the transmission, which is vital for smooth power transfer and noise reduction. The windings are constructed from high-purity copper, coated with high-temperature insulation to resist the thermal stresses common in heavy-duty grinding applications. Furthermore, the armature is precision-balanced to minimize runout and vibration, protecting the bearings and brushes from excessive wear.

Technicians repairing Walter power tools should verify the model compatibility before installation. Replacing a damaged or burnt-out armature with this genuine 48M521 unit restores the tool's torque, speed, and overall efficiency, extending the service life of the equipment in industrial environments.