Norton 66253043351 Surface Grinding Wheel 8in 60 Grit

Product Description

The NORTON 66253043351 is a Type 1 surface grinding wheel engineered for aggressive material removal on hard-to-grind metals. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and extended wheel life compared to conventional aluminum oxide wheels. It measures 8 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole, and is rated to a maximum of 3,600 RPM. The medium-grade (K hardness) construction balances wheel longevity with free-cutting action, making it a reliable choice for production grinding environments. Licensed grinding machine operators and tool-and-die professionals are the primary installers of this wheel.

This wheel is suited for surface grinding and cylindrical grinding applications on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Compatible equipment includes surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous, semi-friable ceramic grain structure supports cool cutting on thermally sensitive alloys and hard ferrous materials where heat buildup and glazing are common failure points.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent stock removal and long wheel life
• Type 1 straight wheel profile — no recess, non-tapered
• Medium grade (K hardness) for balanced hardness and free-cutting performance
• Porous, semi-friable grain structure reduces heat buildup on hard alloys and stainless
• 5SG series specification (5SG60-KVS) for traceability and OEM-spec replacement
• Rated to 3,600 RPM maximum operating speed

Compatibility

Designed 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.

Installation Notes

Grinding wheel mounting must be performed by a qualified operator following ANSI B11.9 and OSHA 29 CFR 1910.215 standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and ensure the machine spindle speed does not exceed the 3,600 RPM rated maximum. Power down and lock out the grinder before changing wheels. Never exceed the rated speed or use damaged blotters, flanges, or arbor hardware.