Norton 66252938876 Surface Grinding Wheel 80 Grit 7in

Product Description

The NORTON 66252938876 is a Type 1 surface grinding wheel built for precision stock removal on ferrous metals. Constructed from aluminum oxide abrasive bonded with a vitrified matrix, it delivers consistent cutting action and free-cutting performance across a broad range of steel types. The wheel measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. At 80 grit with a K hardness code and medium grade rating, it is suited for moderate material removal where surface finish and dimensional control matter. Rated to 3600 RPM maximum, it is appropriate for standard surface grinder spindle speeds in production and tool-room environments.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its aluminum oxide grain makes it a reliable choice for hard carbon steels, soft carbon steels, and tool steels. The porous, vitrified bond structure promotes coolant flow and chip clearance, reducing heat buildup during extended passes. It fits standard 1-1/4 inch arbor spindles common in bench-top and floor-standing surface grinding equipment used in machine shops, maintenance facilities, and tool-and-die operations.

Key Features

• Aluminum oxide abrasive grain for consistent performance on carbon and tool steels
• Vitrified bond with porous structure promotes chip clearance and reduces heat
• 80 grit, medium grade for balanced stock removal and surface finish
• K hardness code for moderate wheel hardness and controlled wear
• Type 1 straight wheel profile with no recess, compatible with standard surface grinder mounting
• Rated to 3600 RPM maximum for safe operation on production grinding equipment

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Fits 1-1/4 inch arbor spindles. Suitable for grinding hard carbon steels, soft carbon stesteels, and tool steels per the manufacturer specification 32AA80-KVTR.

Installation Notes

Grinding wheel mounting and dressing should be performed by qualified personnel following ANSI B7.1 safety standards. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips before installation and perform a ring test per standard shop practice. Never exceed the rated maximum RPM marked on the wheel.