48M768 - Walter Replacement Electronic Speed Control Module 120V for Line-Mate III

Technical Overview: Walter 48M768 Electronic Unit

The Walter 48M768 Electronic Unit 120V is a critical OEM replacement component designed specifically for the electrical regulation systems of Walter's premium surface finishing power tools. This unit serves as the central control module for the motor, managing power input and regulating the variable speed dial functionality that is essential for the versatile operation of tools like the Line-Mate III and Big-Buff III.

Engineered to handle the specific load characteristics of Walter's high-torque motors, this 120V electronic unit ensures that the tool maintains consistent RPM under varying load conditions. It integrates the speed selection interface with the power delivery system, protecting the motor from irregular voltage spikes and ensuring smooth acceleration (soft start) where applicable. Failure of the original unit often results in the tool running at a single speed, failing to start, or exhibiting erratic power delivery, all of which compromise the quality of surface finishing work.

Installation of the 48M768 requires access to the internal housing of the power tool. As a genuine Walter Surface Technologies part, it features the exact form factor and wiring connectors required for the Model 30-A 268 series, ensuring a straightforward repair process without the need for modification. This component is vital for maintaining the safety certifications and operational standards of the equipment.

Technical Specifications

• Part Number: 48M768


• Voltage: 120V AC


• Compatibility: Walter Line-Mate III (30-A 268), Walter Big-Buff III (30-A 268)


• Function: Motor speed regulation and power management