Norton 66253043657 Surface Grinding Wheel 60 Grit 8 in

Product Description

The NORTON 66253043657 is a Type 1 surface grinding wheel designed for precision stock removal and finishing on ferrous materials. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and predictable wear characteristics across high-cycle grinding applications. It measures 8 inches in diameter, 3/4 inches thick, with a 1-1/4 inch arbor hole. The 60-grit, J-hardness (medium grade) specification makes it well-suited for moderate material removal where surface finish and wheel longevity must be balanced. Rated to 3600 RPM maximum, it is sized and rated for standard surface and cylindrical grinder spindles used by tool and die shops, maintenance machinists, and production grinding operations.

This wheel is appropriate for use on hard carbon steels, soft carbon steels, and tool steels in both job-shop and production environments. Compatible equipment includes surface grinders, cylindrical grinders, and CNC cutting tool machines. The vitrified bond construction maintains wheel form well under moderate grinding pressures, making it a reliable choice for flat surface work, tool sharpening, and general-purpose precision grinding where consistent geometry is required. The porous structure promotes coolant flow and chip clearance during wet or dry grinding operations.

Key Features

• Aluminum oxide abrasive — effective on hard and soft carbon steels and tool steels
• Vitrified bond maintains wheel form and supports both wet and dry grinding
• 60 grit, J hardness (medium grade) balances stock removal with surface finish
• Porous wheel structure promotes chip clearance and coolant penetration
• Type 1 straight wheel profile — no recess, no taper — fits standard surface grinder spindles
• Series 32A designation (32AA60-JVTR) for straightforward replacement identification

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding hard carbon steels, soft carbon steels, and tool steels. Fits spindles accepting a 1-1/4 inch arbor hole.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified machinist or maintenance technician following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and de-energize the grinder, then verify the machine spindle speed does not exceed the 3600 RPM maximum rating stamped on the wheel. Use appropriate flanges and blotters; never exceed the wheel speed rating under any operating condition.