Norton 63642595480 Quick-change Disc 50 Grit 3 in

Product Description

The NORTON 63642595480 is a 3-inch coated abrasive quick-change disc designed for aggressive stock removal, weld blending, and deburring on stainless steel and other hard metals. It uses 100% ceramic alumina grain bonded to a heavyweight polyester (Y-weight) backing, delivering a coarse 50-grit cut rate that outpaces standard aluminum oxide discs in demanding metalworking applications. The resin bond system maximizes grain retention under load, while a self-lubricating grain treatment reduces heat buildup and extends disc life. It attaches via a Type R (Speed-Lok TR) quick-change hub, rated to 18,000 RPM. Licensed HVAC, metalworking, and fabrication trades use this disc for surface prep on stainless steel assemblies.

This disc is rated for use on 300 Series and 400 Series stainless steel and is compatible with handheld disc sanders equipped with a Type R quick-change attachment system. The orange-colored ceramic alumina grain self-sharpens during use, making it well suited for high-production grinding tasks where consistent cut rate matters. Typical applications include weld seam blending, edge deburring, and rapid surface conditioning on sheet metal and fabricated stainless components. The trimmable designation is No, meaning the disc edge is fixed and not field-trimmed.

Key Features

• 100% ceramic alumina grain continuously exposes sharper cutting edges during use
• Resin bond system maximizes grain retention under sustained grinding pressure
• Self-lubricating grain treatment reduces heat buildup for cooler, faster cuts
• Heavyweight Y-weight polyester backing resists flex and tearing under aggressive use
• Type R (Speed-Lok TR) attachment for fast disc changes without tools
• Coarse 50 grit delivers fastest stock removal, weld blending, and deburring rates

Compatibility

Designed for use with handheld disc sanders fitted with a Type R quick-change hub system. Rated for grinding on 300 Series stainless steel and 400 Series stainless steel. Part of the Norton R980P series.

Installation Notes

Installation and disc changes should be performed with the sander powered off and unplugged. Verify the tool spindle speed does not exceed the disc maximum RPM rating before mounting. Always inspect the disc for cracks or damage before use and discard any disc that shows signs of delamination or backing separation. Eye protection and appropriate PPE are required per ANSI B11 and applicable shop safety standards when operating grinding equipment.