Norton 66253002588 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253002588 is a Type 1 surface grinding wheel engineered for high-performance material removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long wheel life under demanding production conditions. At 8 inches in diameter, 1 inch thick, and with a 1-1/4 inch arbor hole, it fits standard surface grinder spindles. The 46 grit coarse grade and K hardness rating (medium) make it well suited for aggressive stock removal rather than finishing passes. Rated at a maximum of 3600 RPM, it is designed for use in professional shop environments where precision and reliability matter.

This grinding wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in industrial and job-shop settings. It performs on a broad range of difficult-to-grind workpiece materials including 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The semi-friable ceramic grain continuously self-sharpens as it wears, helping maintain cutting efficiency without excessive heat buildup. It is a direct fit for applications where wheel breakdown rate and surface integrity on heat-sensitive alloys are primary concerns.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent, controlled cut rates
• Semi-friable grain structure promotes self-sharpening and reduces heat generation at the workpiece
• 46 grit coarse grade for aggressive stock removal applications
• K hardness (medium) for a balance of wheel life and free cutting action
• Porous wheel structure aids coolant flow and chip clearance during wet grinding
• Type 1 flat wheel geometry with no recess, compatible with standard surface grinder mounting flanges

Compatibility

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

Installation Notes

Installation should be performed by a qualified machinist or grinding machine operator following the machine manufacturer's mounting instructions and ANSI B11.9 grinding machine safety standards. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips before each use using the ring test — do not mount a damaged wheel. Verify that the machine spindle speed does not exceed the 3600 RPM maximum rated speed marked on the wheel before starting the machine.