Norton 66252942835 Surface Grinding Wheel 60 Grit Type 5

Product Description

The NORTON 66252942835 is a Type 5 surface grinding wheel engineered for precision stock removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and thermal stability during wet or dry grinding operations. It measures 7 inches in diameter and 1-1/4 inches thick, with a 1-1/4 inch arbor hole and a 2-3/4 inch recessed diameter on one side at 5/8 inch recess depth. Rated at a maximum of 3600 RPM, the 60 grit, J-hardness (medium) specification suits moderate material removal on harder metals where surface finish and dimensional control matter.

This wheel is suited for use on surface grinders and cylindrical grinders in machine shop, tool room, and manufacturing environments. Typical applications include tool steel reconditioning, carbon steel flat grinding, cast iron surface work, and light aluminum stock removal. The 32A series designation indicates a friable-free, porous aluminum oxide structure optimized for medium-grade grinding across a range of material hardnesses. Maintenance machinists, tool and die makers, and grinding machine operators are the primary installers and users of this wheel.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut rate and wheel life
• Type 5 recessed one-side geometry reduces heat buildup and aids coolant delivery
• 60 grit, J-hardness (medium grade) balances material removal rate with surface finish
• Porous structure improves chip clearance and reduces glazing during extended use
• Rated to 3600 RPM maximum for safe operation on standard surface and cylindrical grinders
• Compatible material range includes stainless steel, tool steels, carbon steels, aluminum, and cast iron

Compatibility

Designed for use with surface grinders and cylindrical grinders. Rated for grinding 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The 32A Type 5 series is identified by specification code 32A60-JVBE.

Installation Notes

Grinding wheel mounting must be performed by a qualified machine operator following ANSI B11.9 and OSHA 1910.215 grinding safety standards. Power down and lock out the grinder before mounting or removing any wheel. Always inspect the wheel for cracks or chips before installation using the ring test, and never exceed the maximum RPM stamped on the wheel. Use proper blotter washers and flanges sized for the arbor hole to ensure safe, balanced operation.