Norton 66253262564 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253262564 is a Type 1 surface grinding wheel engineered for heavy-duty material removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal and open, cool cutting action across a range of industrial applications. At 12 inches in diameter, 1 inch thick, and bored to a 3-inch arbor hole, it fits standard surface and cylindrical grinding machine spindles. The 46-grit, coarse-grade structure with an I hardness code (medium wheel hardness) suits aggressive roughing passes where surface finish is secondary to removal rate. Rated at a maximum of 2070 RPM, it operates within the speed envelope of most production grinders. The 32A46-IVBE specification designation identifies bond, grit, and structure for precision wheel selection.

This wheel is suited for production and maintenance grinding in industrial and metalworking shops. It handles a broad range of workpiece materials including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Compatible equipment includes CNC cutting tool machines, cylindrical grinders, and surface grinders. Licensed grinding machine operators and toolroom machinists are the primary installers and users in both job shop and production floor environments.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent, open cutting action
• 46 grit, coarse grade suited for aggressive stock removal on ferrous and non-ferrous metals
• I hardness code (medium) balances wheel wear rate with cutting efficiency
• Porous wheel structure promotes chip clearance and reduces heat buildup at the workpiece
• 2070 RPM maximum speed rating for safe operation on standard production grinders
• 32A series designation for verified specification traceability

Compatibility

Designed for use with CNC cutting tool machines, cylindrical grinders, and surface grinders accepting a 12-inch diameter, 1-inch wide, Type 1 wheel with a 3-inch arbor hole. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron workpieces.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified operator following ANSI B11.9 and OSHA 1910.215 standards for abrasive wheel machinery. Always inspect the wheel for cracks or chips before mounting and perform a ring test per manufacturer guidance. Power down and lock out the grinder before changing wheels, and verify the machine spindle speed does not exceed the 2070 RPM maximum marked on the wheel. Use proper flanges, blotters, and a correctly sized arbor bushing if required to maintain concentricity and safe clamping.