Norton 66252942430 Surface Grinding Wheel 7in 60 Grit

Product Description

The NORTON 66252942430 is a Type 1 surface grinding wheel engineered for aggressive stock removal and precision finishing on hard ferrous materials. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rate and long wheel life under high-cycle production conditions. The wheel measures 7 inches in diameter, 1 inch thick, with a 1-1/4 inch arbor hole. Hardness is rated K (Medium) with a semi-friable grain structure that self-sharpens under load, reducing glazing on difficult-to-grind materials. Rated to 3600 RPM maximum, it is suited for surface grinders, cylindrical grinders, and CNC cutting tool machines.

This wheel is designed for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is well suited to production and toolroom environments where consistent surface finish and dimensional accuracy on hard or abrasion-resistant workpieces are required. The vitrified bond structure provides rigidity and coolant permeability, making it a practical choice for wet or dry precision surface grinding operations across both job shops and high-volume manufacturing settings.

Key Features

• Ceramic abrasive grain for high material removal rates on hard alloys and super alloys
• Vitrified bond for rigidity, dimensional stability, and coolant compatibility
• Semi-friable grain structure self-sharpens to reduce glazing and maintain cut rate
• K (Medium) hardness rating balances wheel life with free-cutting action
• Porous wheel structure promotes coolant flow and reduces heat buildup at the workpiece
• No recess, no taper — standard Type 1 flat wheel geometry for broad machine compatibility

Compatibility

Rated for use on 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: 5SG Type 1, specification 5SG60-KVS.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified grinding machine operator following ANSI B11.9 and OSHA 1910.215 standards for abrasive wheel machinery. Always inspect the wheel for cracks or chips using the ring test before mounting — never mount a damaged wheel. Power down and lock out the grinder before changing wheels, confirm the machine spindle speed does not exceed the 3600 RPM maximum rating stamped on the wheel, and use the correct flanges and blotter paper as required by the machine manufacturer. Stand clear of the wheel plane during the initial run-up period.