Tru-maxx TRU-RR404M Quick-change Type R Disc Backing Pad

Product Description

The TRU-MAXX TRU-RR404M is a Quick-Change Type R disc backing pad designed for use with rotary grinders and angle grinders in metal fabrication, surface prep, and finishing applications. It accepts a 1/4-20 female thread shank and is rated to a maximum of 10,000 RPM. The medium-density construction provides consistent backing support for abrasive discs during grinding and blending operations. Compatible with Quick-Lok quick-change disc systems, this pad allows for fast disc swaps without removing the pad from the tool, keeping workflow moving on the shop floor or job site.

This backing pad is suited for professional metalworkers, fabricators, and maintenance technicians who rely on quick-change abrasive systems for surface conditioning, weld blending, and deburring. Its compact form factor, measuring 4 inches in length and 4 inches in width with a 2.38-inch height, fits standard right-angle and die grinder configurations. The 1/4-inch shank diameter is compatible with common grinder collet sizes found in both pneumatic and electric tools used across industrial and construction trades.

Key Features

• Quick-Change Type R interface for rapid abrasive disc changes
• 1/4-20 female thread for secure tool attachment
• Rated to 10,000 RPM maximum for safe high-speed operation
• Medium-density pad for consistent disc support during grinding and blending
• Quick-Lok compatibility for use with standard quick-change disc systems
• Compact 4 x 4 inch footprint fits most right-angle and die grinder applications

Compatibility

Designed for use with Quick-Lok quick-change abrasive disc systems on rotary and angle grinders equipped with a 1/4-inch collet or 1/4-20 threaded arbor.

Installation Notes

Installation is performed by threading the pad onto the grinder spindle by hand and securing it firmly before attaching the abrasive disc. Always power down and disconnect the tool from its air or electrical source before mounting or removing the backing pad. Verify that the tool spindle speed does not exceed the 10,000 RPM rating of this pad before operation. Follow applicable ANSI B7 safety standards and the tool manufacturer guidelines when mounting abrasive accessories.