Norton 66253263597 Surface Grinding Wheel 60 Grit 12in

Product Description

The NORTON 66253263597 is a Type 7 recessed surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel measures 12 inches in diameter, 2 inches thick, with a 5-inch hole size and a maximum operating speed of 2070 RPM. The 60-grit, medium-grade (hardness code I) construction delivers consistent material removal rates without loading on tough alloys. Semi-friable grain structure allows the wheel to self-dress under load, maintaining a sharp cutting edge throughout the grinding cycle. At 12.35 pounds, this is a heavy-duty wheel suited to production-level grinding operations.

This wheel is rated for use on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders and cylindrical grinders. The Series 32A designation indicates a specific aluminum oxide grain formulation from NORTON, optimized for consistent performance across these material applications. Typical install scenarios include tool-and-die shops, maintenance machining, and production surface grinding operations where wheel life and surface finish consistency are critical.

Key Features

• Type 7 recessed wheel with two-sided recess configuration for proper flange engagement
• Aluminum oxide abrasive — semi-friable grain for balanced cut rate and wheel life
• Vitrified bond provides rigidity and consistent form-holding during heavy cuts
• 60 grit, medium grade (hardness code I) suited for general stock removal on a wide range of metals
• 2070 RPM maximum operating speed — verify machine speed before mounting
• Non-porous structure; gray color for easy identification on the shop floor

Compatibility

Designed for use with surface grinders and cylindrical grinders. Compatible material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Verify spindle speed does not exceed 2070 RPM before mounting.

Installation Notes

Grinding wheel installation must be performed by a qualified machinist or grinding technician following ANSI B11.9 and OSHA 1910.215 guidelines. Always power down and lock out the machine before changing wheels. Perform a ring test on the wheel before mounting and inspect for cracks or chips. Never exceed the maximum rated RPM of 2070 — confirm machine spindle speed before use. Use proper flanges and blotters as required by the grinding machine manufacturer.