Norton 66252941016 Surface Grinding Wheel 120 Grit 7in

Product Description

The NORTON 66252941016 is a Type 1 surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rate and form retention on surface grinders, cylindrical grinders, and CNC cutting tool machines. At 120 grit with a J hardness code (medium hardness rating), it produces a fine finish suitable for finishing passes on tool steels, stainless steel, carbon steels, cast iron, and aluminum. The wheel measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole, and is rated to 3,600 RPM maximum. Weighing 1.59 pounds, it is a direct, single-unit replacement suitable for shop and field service use.

This wheel is suited for both production and maintenance grinding applications in industrial and machine shop environments. It handles 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Licensed machinists, tool and die makers, and grinding technicians install this wheel on surface grinders and cylindrical grinders when a fine-grit, medium-hardness wheel is needed for controlled metal removal and surface finishing. The 32A Type 1 series specification (32A120-JVBE) identifies the exact abrasive, grit, hardness, bond, and structure for precise wheel selection.

Key Features

• Aluminum oxide abrasive provides durable, self-sharpening cutting action on a wide range of metals
• Vitrified bond delivers rigid, porous structure for free cutting and efficient coolant flow
• 120 grit fine grade produces smooth surface finishes on finishing passes
• J hardness (medium) balances wheel life against cut rate for controlled stock removal
• Type 1 flat wheel geometry fits standard surface grinder and cylindrical grinder spindle configurations
• 3,600 RPM maximum operating speed — verify spindle RPM before mounting

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Compatible material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Installation should be performed by a qualified machinist or grinding technician following ANSI B7.1 safe mounting practices. Always inspect the wheel for cracks or chips using the ring test before mounting, and ensure the spindle speed does not exceed the 3,600 RPM maximum marked on the wheel. Power down and lock out the machine before changing wheels. Use proper flanges and a blotter on each side of the wheel; never exceed the rated arbor hole size or overtighten the spindle nut.