Norton 66253262503 Surface Grinding Wheel 12in 60 Grit

Product Description

The NORTON 66253262503 is a Type 1 surface grinding wheel engineered for high-performance material removal on hard ferrous metals and specialty alloys. Built with ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rate and shape retention under heavy grinding loads. At 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole, it is sized for production surface grinders and cylindrical grinders. The 60-grit, I-hardness (medium grade) specification places it in the medium-stock-removal range, balancing cut speed with surface finish. Rated to a maximum of 2070 RPM, it suits most standard grinding spindle setups. Weight is 8.5 pounds.

This wheel is designed for use in industrial and production environments where surface grinding, cylindrical grinding, or CNC cutting tool machine operations require reliable stock removal on difficult materials. Typical applications include precision grinding of 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is most commonly mounted by maintenance machinists, tool-and-die makers, and grinding machine operators in job shops, manufacturing facilities, and tool rooms.

Key Features

• Ceramic abrasive grain (semi-friable) for self-sharpening action and extended wheel life on hard alloys
• Vitrified bond provides rigidity and porosity for efficient chip clearance and coolant flow
• Type 1 straight-wheel profile with no recess, compatible with standard surface and cylindrical grinder flanges
• 60 grit, I hardness (medium grade) balances aggressive stock removal with acceptable surface finish
• Porous structure supports coolant penetration and reduces heat buildup at the workpiece
• Specification designation 5SG60-IVS for precise cross-reference and replacement ordering

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Series designation is 5SG Type 1.

Installation Notes

Grinding wheel mounting must be performed by qualified personnel 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 lock out the grinder before changing wheels, and verify that the machine spindle speed does not exceed the 2070 RPM maximum rating marked on the wheel. Use properly matched flanges and blotters; never exceed the rated speed under any operating condition.