Norton 66253262270 Surface Grinding Wheel 60 Grit 12 in

Product Description

The NORTON 66253262270 is a Type 1 straight surface grinding wheel designed for precision stock removal on ferrous and non-ferrous workpieces in industrial grinding applications. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and good form-holding at its rated maximum of 2070 RPM. At 12 inches in diameter and 3/4 inches thick with a 3-inch arbor hole, it mounts to standard surface grinder spindles and cylindrical grinder setups. The 60-grit, I-hardness (medium grade) specification suits operators who need aggressive material removal while maintaining reasonable surface finish on hard and soft carbon steels, stainless, tool steels, and cast iron. Specification code 32A60-IVBE identifies the exact bond and abrasive formulation for reordering or matching to existing wheel sets.

This wheel is suited for production and maintenance environments where surface grinders, cylindrical grinders, and CNC cutting tool machines are in regular use. Its material application range covers 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron, making it a versatile choice for machine shops, tool rooms, and heavy fabrication settings. The porous, vitrified bond structure promotes coolant flow and chip clearance during extended cuts, reducing heat buildup at the workpiece interface.

Key Features

• Type 1 straight wheel profile — no recess, no taper — fits standard surface and cylindrical grinder flanges
• Aluminum oxide abrasive with vitrified bond for consistent cut rate and good form retention
• 60 grit, I hardness (medium grade) balances aggressive stock removal with acceptable surface finish
• Porous structure promotes coolant penetration and swarf clearance during extended grinding passes
• Specification code 32A60-IVBE allows precise cross-referencing and wheel matching
• Rated to 2070 RPM maximum — verify spindle speed before mounting

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Compatible material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel installation must be performed by a qualified operator following ANSI B11.9 and applicable OSHA standards for abrasive wheel machinery. Ring-test the wheel before mounting and inspect for cracks or chips — never mount a damaged wheel. Ensure the machine spindle speed does not exceed the 2070 RPM maximum rating stamped on the wheel. Use proper blotter flanges, match flange diameter to wheel size per manufacturer guidelines, and run the wheel under guard at operating speed for at least one minute before engaging the workpiece.