Norton 66261138673 Quick-change Disc 3 in 50 Grit

Product Description

The NORTON 66261138673 is a coated quick-change abrasive disc designed for aggressive stock removal, weld blending, and deburring on metal and wood surfaces. Built on a heavy Y-weight polyester backing, this disc delivers rigidity and durability under sustained grinding loads. The zirconia alumina abrasive grain is blended with a self-lubricating treatment that promotes fast cutting, extended disc life, and reduced heat buildup at the work surface. Rated at 20,000 RPM maximum, the disc mounts via a Speed-Lok TR (Type III) quick-change system and is compatible with Type R attaching systems. At 50 grit, it falls in the coarse grade range, suited for rapid material removal rather than finishing passes.

This disc is intended for use with handheld disc sanders in industrial, fabrication, and maintenance applications. It is well matched to metalworking tasks involving stainless steel, carbon steel, aluminum, brass, bronze, and cast iron, as well as fiberglass, composites, and both hard and soft wood materials. The coarse grit makes it a practical choice for weld blending on 300 and 400 series stainless steel, deburring hard carbon steels, and initial stock removal on soft carbon steels and nonferrous metals. It belongs to the R860 series and is sold individually with a minimum order quantity of 25 units.

Key Features

• Zirconia alumina grain with self-lubricating treatment for fast cutting and reduced grinding heat
• Heavy Y-weight polyester backing provides rigidity and durability under load
• Speed-Lok TR (Type III) quick-change mount with Type R attaching system compatibility
• 50 grit coarse grade suited for stock removal, weld blending, and deburring
• Rated at 20,000 RPM maximum for high-speed handheld disc sander use
• Rigid, non-trimmable construction in the R860 series

Compatibility

Designed for use with handheld disc sanders equipped with a Speed-Lok TR (Type III) or Type R quick-change attaching system. Rated for use on 300 series stainless, 400 series stainless, aluminum, brass, bronze, fiberglass and composites, hard carbon steels, soft carbon steels, hard woods, and soft woods.

Installation Notes

Installation is performed by machinists, fabricators, and maintenance technicians using compatible handheld disc sanders. Before mounting or changing the disc, power down and disconnect the tool from its power source. Verify that the tool spindle speed does not exceed the 20,000 RPM maximum rating of the disc before operation. Inspect the disc for damage before each use and do not use damaged or delaminated discs.