Norton 66253044168 Surface Grinding Wheel 60 Grit 8 in

Product Description

The NORTON 66253044168 is a Type 1 surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals in industrial grinding applications. Constructed from aluminum oxide abrasive with a vitrified bond, it measures 8 inches in diameter, 3/4 inches thick, and carries a 1-1/4 inch arbor hole. At 60 grit with H hardness (medium grade), it delivers an efficient cut rate suited to surface, cylindrical, and CNC tool grinding. Rated to 3600 RPM, it meets the demands of both manual and automated grinding setups. The porous structure of the vitrified bond aids in coolant flow and chip clearance during extended runs.

This wheel is engineered for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It is well suited to grinding 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The 32A series designation identifies the specific aluminum oxide grain blend Norton uses for consistent cut and form retention across medium-to-hard workpiece materials.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut and long wheel life
• 60 grit, H hardness (medium grade) balances material removal rate and surface finish
• Porous wheel structure promotes coolant flow and chip clearance
• Type 1 straight wheel profile fits standard surface and cylindrical grinder spindles
• 3600 RPM max operating speed suits common bench and floor-standing grinders
• No recess, no taper — straightforward mount and dress

Compatibility

Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines accepting a Type 1 straight wheel with an 8 inch diameter, 3/4 inch width, and 1-1/4 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.

Installation Notes

Grinding wheel installation and dressing should be performed by a qualified grinding machine operator following ANSI B11.9 safety standards. Always inspect the wheel for cracks or chips before mounting — never mount a damaged wheel. Power down and lock out the grinder before changing wheels, and verify the machine spindle speed does not exceed the 3600 RPM rating marked on the wheel. Use proper flanges and blotters as specified by the machine manufacturer, and conduct a free-spin safety test before bringing the wheel into contact with the workpiece.