Norton 66252940205 Surface Grinding Wheel 7in 100 Grit

Product Description

The NORTON 66252940205 is a Type 1 surface grinding wheel designed for precision material removal on hard ferrous metals and exotic alloys. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent stock removal and a fine surface finish at up to 3600 RPM. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The K hardness rating and semi-friable grain structure make it well suited for controlled grinding where heat and wheel breakdown need to be managed carefully. It is installed and operated by machinists, tool and die makers, and grinding specialists in production and job shop environments.

This wheel is rated for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous, vitrified bond structure promotes coolant flow and chip clearance during wet or dry grinding operations. The blue wheel color is consistent with NORTON 5SG series ceramic grain wheels, which are specified for demanding material applications where conventional abrasives lose form or cut rate too quickly.

Key Features

• Ceramic abrasive grain with vitrified bond for long wheel life and consistent cut rate
• 100 grit, fine grade finish suitable for semi-finish and finish grinding passes
• K hardness (medium) balances wheel wear and workpiece surface integrity
• Semi-friable grain continuously self-sharpens under load, reducing glazing
• Porous wheel structure supports coolant penetration and swarf evacuation
• Rated for 400 series stainless, tool steels, titanium, super alloys, and cast and ductile iron

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for material applications including 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Series designation is 5SG Type 1 with specification code 5SG100-KVS.

Installation Notes

Grinding wheel installation and dressing must be performed by a qualified machinist or grinding specialist following ANSI B11.9 and OSHA 29 CFR 1910.215 safety standards. Before mounting, inspect the wheel for cracks or chips using a ring test. Confirm the spindle RPM does not exceed the 3600 RPM maximum rated speed of this wheel. Always install proper wheel flanges and guards before returning the machine to service.