Norton 66253262500 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253262500 is a Type 1 flat surface grinding wheel engineered for aggressive stock removal on hard ferrous metals and exotic alloys. Built with ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long service life under the thermal demands of surface, cylindrical, and CNC cutter grinding operations. At 12 inches in diameter, 1 inch thick, and rated to 2070 RPM maximum, it is sized for production-grade grinders where flatness and surface finish repeatability matter. The 46-grit, coarse-grade construction accelerates material removal on hard substrates while the porous, semi-friable grain structure resists loading.

This wheel is suited for both job-shop and production environments where operators regularly work 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, and cast, ductile, or gray iron. It mounts on surface grinders, cylindrical grinders, and CNC cutting tool machines with a standard 3-inch arbor hole. The blue ceramic grain and vitrified bond combination handles interrupted cuts and heat cycling without glazing, making it a practical choice for tool room and production floor use.

Key Features

• Ceramic abrasive grain for high cut rates on hard ferrous and exotic alloy workpieces
• Vitrified bond with porous structure resists loading and dissipates heat effectively
• Type 1 flat wheel geometry for surface and cylindrical grinding applications
• 46-grit coarse grade optimized for rapid stock removal rather than finish grinding
• Semi-friable grain continually fractures to expose fresh cutting edges during use
• Specification code 5SG46-IVS for direct cross-reference in procurement and repair orders

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines equipped with a 3-inch arbor. Rated for material applications including 400 series stainless, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel installation must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 safe guarding requirements. Before mounting, ring-test the wheel for cracks and verify the machine spindle speed does not exceed the 2070 RPM maximum stamped on the wheel. Power down and lock out the grinder before changing wheels, and use proper flanges and blotters as specified by the wheel manufacturer. Never exceed the rated RPM and always dress the wheel before the first cut on a new mount.