48R619 - Walter Speed Control Dial for Line-Mate III and Big Buff III

Genuine Walter 48R619 Replacement Potentiometer

The Walter 48R619 is the official OEM potentiometer assembly for the Walter Line-Mate III (Model 30-A 268) and Big Buff III (Model 30-A 265) surface finishing tools. As a critical component of the tool's electronic speed control module, this potentiometer allows the operator to vary the motor's RPM output. Over time, dust ingress, vibration, and frequent adjustment can cause the resistive tracks within a potentiometer to wear out, leading to dead spots on the dial or a complete loss of speed regulation. This replacement unit is the factory-correct solution for these maintenance issues.

Technical integrity is paramount when repairing industrial power tools. The 48R619 is engineered to interface seamlessly with the tool's control board, providing linear and predictable resistance changes that correspond to the numbered dial on the tool housing. This ensures that when an operator selects a specific setting for a satin finish or mirror polish, the tool delivers the precise RPM expected. Using non-OEM parts for speed control can result in motor overheating or inconsistent torque delivery, which compromises the finish quality on the workpiece.

This component is supplied ready for installation. Maintenance personnel should ensure the tool is disconnected from power before opening the housing to replace the potentiometer. By choosing the genuine Walter 48R619, you are investing in the continued reliability and safety of your premium surface finishing equipment. Keep your Walter tools running at peak efficiency and extend their service life with authentic repair parts.

Compatibility Specifications

• Line-Mate III: Fits Model 30-A 268 drum sanders.
• Big Buff III: Fits Model 30-A 265 rotary polishing tools.
• Function: Variable resistance for motor speed regulation.