Norton 66253319956 Surface Grinding Wheel 60 Grit 14in

Product Description

The NORTON 66253319956 is a Type 5 recessed surface grinding wheel engineered for aggressive stock removal on hard-to-grind ferrous and exotic materials. Built around a ceramic abrasive grain with a vitrified bond, this wheel delivers consistent cut rates and thermal control through a porous structure that promotes coolant flow and chip clearance. At 14 inches in diameter, 1-1/2 inches thick, and rated to 2320 RPM, it fits production surface and cylindrical grinders where wheel integrity under sustained load is critical. The H hardness code places it in the soft-to-medium range, allowing the wheel to self-dress and expose fresh grain rather than glazing over on hard workpiece materials. Weighing 13.5 pounds, it is a substantial wheel suited for industrial grinding operations.

This wheel is used in surface grinding and cylindrical grinding applications across metalworking and tool-and-die shops. It is specifically formulated for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The purple ceramic grain (series 3SG) is a semi-friable abrasive that fractures in a controlled pattern, maintaining a sharp cutting edge throughout the wheel life. Typical install environments include production grinding cells and surface grinder fixtures where tight tolerances and surface finish consistency are required.

Key Features

• Ceramic abrasive grain (3SG series) provides semi-friable fracture for sustained sharpness on hard and exotic alloys
• Vitrified bond with porous structure supports coolant penetration and swarf evacuation during heavy cuts
• Type 5 recessed geometry with a single-side recess: 8 inches recess diameter, 1/2 inch recess depth
• H hardness code (soft grade) promotes self-dressing action on dense, hard workpiece materials
• Rated to 2320 RPM maximum operating speed
• Suitable for both surface grinders and cylindrical grinders

Compatibility

Designed for use with surface grinders and cylindrical grinders accepting a 14-inch diameter, 1-1/2-inch-thick Type 5 wheel with a 5-inch arbor hole. Formulated for material applications including 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B7.1 safety requirements for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or damage using the ring test before mounting, and never exceed the maximum operating speed of 2320 RPM. Power down and lock out the grinder before installing or removing the wheel. Use proper flanges, blotters, and a torque-appropriate spindle nut when mounting to ensure the wheel seats correctly.