Norton 66254427993 Fiber Disc 9-1/8 in 36 Grit Ceramic Alumina

Product Description

The NORTON 66254427993 is a 9-1/8-inch ceramic alumina fiber disc from the RazorStar series, engineered for aggressive material removal on metal fabrication and grinding applications. Built on a fabric backing, this coarse-grade disc runs at a maximum of 6,600 RPM and attaches via a standard 7/8-inch arbor hole, making it compatible with common angle grinders used in professional metalworking and fabrication shops. At 36 grit, it delivers fast stock removal on welds, castings, and heavy surface prep. The ceramic alumina abrasive is self-sharpening, maintaining cut rate longer than conventional aluminum oxide discs under sustained load.

This disc is suited for heavy grinding and blending tasks on steel, stainless steel, and other ferrous metals in fabrication, structural, and maintenance environments. The 9-1/8-inch diameter makes it appropriate for large-diameter angle grinders used in industrial and commercial settings where coverage and removal rate matter. Metalworkers, fabricators, and maintenance professionals use this disc for weld leveling, rust removal, and surface conditioning prior to coating or inspection.

Key Features

• Ceramic alumina abrasive for extended cut life and self-sharpening performance under load
• 36 grit coarse grade delivers aggressive stock removal on ferrous metals
• Fabric backing provides flexibility and durability during grinding
• 9-1/8-inch diameter with 7/8-inch arbor hole for standard angle grinder compatibility
• Rated to 6,600 RPM maximum operating speed
• Part of the RazorStar series designed for high-performance coated abrasive applications

Compatibility

Designed for use with large angle grinders accepting a 9-1/8-inch fiber disc with a 7/8-inch arbor hole attachment.

Installation Notes

Fiber discs of this type are installed and serviced by metalworkers, fabricators, and maintenance trades. Before mounting, confirm the grinder is rated at or above the disc diameter and that the spindle speed does not exceed 6,600 RPM. Always inspect the disc for damage before use and ensure the backing pad is in sound condition. Follow ANSI B7.1 and all applicable safety standards when mounting and operating abrasive wheels.