48S164 - Walter Replacement Stator Screw M4 x 60mm

Technical Specifications and Application

The Walter 48S164 Stator Screw is a specialized metric fastener engineered for the repair and maintenance of Walter electric power tools. Defined by its M4 thread profile and 60mm overall length, this screw is specifically tasked with anchoring the stator assembly within the motor housing. In electric motor design, the stator must remain absolutely rigid; any movement relative to the housing can lead to misalignment with the rotor (armature), resulting in friction, overheating, and eventual motor burnout. This component ensures that the stator stack remains compressed and located according to factory blueprints.

Material and Durability

Manufactured from industrial-grade steel, this screw is designed to withstand the high-frequency vibrations typical of angle grinders and finishing tools. The M4 threads are precision-rolled to ensure smooth engagement with the mating threads in the motor housing or retaining nut, reducing the risk of cross-threading during assembly. The 60mm length is calculated to pass through the stator laminations and engage sufficient thread depth for maximum holding power without protruding into moving parts or electrical wiring paths.

Installation and Repair Notes

When servicing a Walter tool that requires stator removal or tightening, it is recommended to inspect all fasteners for signs of fatigue, thread stretching, or corrosion. If the 48S164 screw shows any wear, it should be replaced immediately. When installing, technicians should ensure the screw is torqued to the manufacturer's specified value to prevent loosening over time. Using thread-locking compounds (if specified in the tool's service manual) can further enhance security. This part is sold individually, allowing for targeted repairs of specific damaged fasteners without the need to purchase entire assembly kits.

Compatibility

This part is identified by the internal SKU 48S164. It is compatible with specific models of Walter grinders and power tools. Technicians should verify the part number against the tool's exploded view diagram or parts list before ordering to ensure compatibility. As a direct replacement, it requires no modification to the tool or the fastener itself, facilitating a straightforward repair process that minimizes downtime in the workshop.