Norton 66253038894 Surface Grinding Wheel 8 in 60 Grit

Product Description

The NORTON 66253038894 is a Type 1 surface grinding wheel designed for precision stock removal on ferrous metals. It measures 8 inches in diameter by 0.5 inches thick with a 1.25-inch arbor hole. The wheel uses aluminum oxide abrasive bonded in a vitrified matrix, delivering consistent cut rate and free cutting action across a range of steel workpiece materials. Rated at a maximum of 3600 RPM, it carries a medium grade with an I hardness code, making it well suited for controlled surface finishing and flat grinding applications where wheel wear and workpiece geometry need to be balanced.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in production and toolroom environments. Its aluminum oxide abrasive is effective on hard carbon steels, soft carbon steels, and tool steels. The 32A Series Type 1 flat-profile design fits standard horizontal-spindle surface grinding setups common in machine shops and tool and die operations. The porous, vitrified bond structure promotes coolant flow and chip clearance during wet or dry grinding operations.

Key Features

• Type 1 flat wheel profile — no recess, no taper — fits standard arbor mounting
• Aluminum oxide abrasive with vitrified bond for consistent cut rate and easy dressing
• 60 grit, medium grade, I hardness code — suited for stock removal on steel workpieces
• Rated to 3600 RPM maximum operating speed
• Porous wheel structure promotes coolant flow and chip clearance
• 32A Series specification (32AA60-IVTR) for material application on carbon and tool steels

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding hard carbon steels, soft carbon steels, and tool steels. The 1.25-inch arbor hole fits standard spindle configurations common to horizontal-spindle surface grinding equipment.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment operator following ANSI B7.1 safe use guidelines for abrasive wheels. Always inspect the wheel for cracks or chips using the ring test before mounting, and verify that the machine spindle speed does not exceed the 3600 RPM maximum rating marked on the wheel. Power down and lock out the grinder before mounting or removing the wheel. Use proper flanges and a blotter on each side of the wheel as required by ANSI standards, and run the wheel at operating speed under guard for at least one minute before engaging the workpiece.