Norton 66253220887 Surface Grinding Wheel 12in 60 Grit

Product Description

The NORTON 66253220887 is a Type 1 surface grinding wheel engineered for high-performance material removal on ferrous and exotic alloys. Built with a ceramic abrasive grain and vitrified bond, this wheel delivers consistent cut rates and long service life under both wet and dry operating conditions. At 12 inches in diameter, 1 inch thick, and with a 3 inch arbor hole, it fits standard surface and cylindrical grinding machine spindles. The 60 grit, H hardness (medium grade, semi-friable) specification positions it for aggressive stock removal while maintaining a controlled surface finish. Maximum rated speed is 2710 RPM. The wheel weighs 8 pounds and is identified by the specification code 3SGR60-HVP2.

This wheel is suited for production and toolroom grinding applications on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both wet and dry coolant environments. The porous, vitrified structure supports coolant flow through the wheel face, making it practical for high-stock-removal passes where heat buildup is a concern. It is a fit for shops running precision flat grinding or OD grinding on challenging workpiece materials.

Key Features

• Ceramic abrasive grain for high cut rate and extended wheel life on hard and exotic alloys
• Vitrified bond with porous structure supports wet and dry grinding and promotes coolant penetration
• 60 grit, H hardness (medium grade) balances aggressive stock removal with surface finish control
• Type 1 straight wheel profile with no recess, compatible with standard surface and cylindrical grinder spindles
• Semi-friable grain breaks down gradually to expose fresh cutting edges, reducing glazing
• Rated to 2710 RPM maximum operating speed

Compatibility

Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines. Designed for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron workpieces. Part of the Norton 3SG Type 1 series.

Installation Notes

Grinding wheel installation and dressing should be performed by a qualified machinist or grinding specialist following ANSI B11.9 and OSHA 29 CFR 1910.215 guarding requirements. Always inspect the wheel for cracks or chips using the ring test before mounting. Power down and lock out the grinder before changing wheels, verify the machine spindle speed does not exceed the wheel's 2710 RPM maximum rating, and confirm the arbor hole fits the spindle without forcing. Use proper flanges and blotters as specified by the machine manufacturer.