Tru-maxx QRC412050AO300 Quick-change Disc 50 Grit 3 in

Product Description

The TRU-MAXX QRC412050AO300 is a coated quick-change abrasive disc designed for aggressive material removal in metal fabrication, weld blending, and surface preparation applications. The disc measures 3 inches in diameter and carries a 50-grit aluminum oxide abrasive, placing it firmly in the coarse-grade range suited for rapid stock removal and deburring. A Type R attachment system allows fast, tool-free disc changes on compatible right-angle grinders and die grinders. The polyester backing with Y-weight construction provides the rigidity needed to maintain consistent cut throughout the disc's service life. Maximum rated speed is 20,000 RPM.

This disc is intended for use on metal surfaces where coarse material removal is the priority — weld spatter cleanup, edge breaking, and surface conditioning on steel and ferrous alloys are common applications. It is appropriate for use in fabrication shops, maintenance and repair operations, and field metalwork. The coated aluminum oxide construction delivers reliable cutting action across flat and contoured workpieces. Each package contains one disc, with a minimum order quantity of 25 units, making it a practical choice for shops that maintain a rotating stock of abrasive consumables.

Key Features

• 3-inch diameter coated abrasive disc for use with quick-change right-angle and die grinders
• 50-grit aluminum oxide abrasive rated for coarse-grade stock removal and surface conditioning
• Type R quick-change attachment system for tool-free disc swaps during production work
• Polyester Y-weight backing provides firm support and resists flexing under load
• 20,000 RPM maximum rated speed compatible with common pneumatic and electric grinders
• Brown disc with white button for quick visual identification at the tool

Compatibility

Designed for use with Type R quick-change grinder systems accepting 3-inch coated abrasive discs rated to 20,000 RPM or lower.

Installation Notes

Installation is performed by machinists, fabricators, and maintenance technicians using compatible Type R quick-change grinders. Always confirm the grinder's rated free-speed does not exceed the disc's 20,000 RPM maximum before mounting. Inspect the disc for cracks, tears, or damage prior to each use and discard any disc showing defects. Follow ANSI B7.1 and applicable shop safety standards, including use of appropriate eye and face protection during grinding operations.