Norton 66252939682 Surface Grinding Wheel 7in 120 Grit

Product Description

The NORTON 66252939682 is a Type 1 surface grinding wheel designed for precision stock removal and finishing on a range of ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. The 120-grit, fine-grade specification and K hardness rating make it well suited for controlled material removal where surface finish is a priority. Rated to 3600 RPM, it carries the 32A120-KVBE specification designation. At under one pound, it fits standard surface grinder spindles without excessive mass. Licensed machinists, tool-and-die makers, and maintenance technicians are the typical installers.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both job shop and production environments. It performs reliably on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The fine 120-grit aluminum oxide abrasive is particularly effective for finishing passes and tight-tolerance work where aggressive stock removal is not required. It is a porous, non-tapered, no-recess wheel with a gray body color, consistent with the 32A Type 1 series.

Key Features

• 120-grit fine-grade aluminum oxide abrasive for precision surface finishing
• Vitrified bond construction provides rigidity and consistent cut rate
• K hardness rating with medium wheel hardness — suited for harder workpiece materials
• 3600 RPM maximum speed rating for surface and cylindrical grinder applications
• Porous, non-tapered, no-recess Type 1 wheel geometry
• Compatible with multiple workpiece materials including stainless steel, tool steel, aluminum, and cast iron

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Fits spindles with a 1-1/4 inch arbor bore.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment operator following the machine manufacturer's mounting instructions. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before mounting — never mount a damaged wheel. Operate only at or below the 3600 RPM maximum speed rating; exceeding this limit is a serious safety hazard.