Tru-maxx TRU-RR304M Disc Backing Pad Quick-change Type R 3 Inch

Product Description

The TRU-MAXX TRU-RR304M is a 3-inch disc backing pad designed for use with Quick-Change Type R abrasive discs. It features a 1/4-20 female thread connection and a 1/4-inch shank diameter, supporting rotational speeds up to 20,000 RPM. The medium-density pad construction provides consistent backing pressure across the disc face during grinding, blending, and surface preparation tasks. This backing pad is installed by metalworkers, fabricators, and maintenance technicians working with angle grinders and die grinders in production or field environments.

This backing pad is suited for use on die grinders and right-angle tools in metal fabrication, automotive bodywork, weld blending, and general surface conditioning applications. The Quick-Lok compatible quick-change interface allows rapid disc swaps without removing the pad from the tool, reducing downtime during multi-step finishing operations. It is appropriate for both shop and field use across light industrial and maintenance settings.

Key Features

• 3-inch pad diameter accommodates standard Quick-Change Type R abrasive discs
• 1/4-20 female thread with 1/4-inch shank for compatibility with common die grinder spindles
• Rated to 20,000 RPM maximum for high-speed grinder operation
• Medium density backing provides balanced support for grinding and blending tasks
• Quick-Lok compatible interface enables tool-free disc changes

Compatibility

Designed for use with Quick-Lok style Quick-Change Type R abrasive discs on die grinders and rotary tools equipped with a 1/4-20 threaded spindle.

Installation Notes

Installation is performed by threading the 1/4-20 shank into the grinder spindle by hand and securing per the tool manufacturer's torque guidance. Always ensure the tool is unplugged or the air supply is disconnected before mounting or removing the backing pad. Confirm that the mounted abrasive disc RPM rating meets or exceeds the tool's no-load speed before operation. Do not exceed the 20,000 RPM maximum rating of this backing pad.