Norton 69936662922 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 69936662922 is a Type 1 surface grinding wheel built for precision stock removal on ferrous metals and superalloys. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The abrasive is pink aluminum oxide, semi-friable, bonded with a vitrified bond and rated to a maximum of 3600 RPM. At 60 grit and K hardness (medium grade), this wheel balances cut rate with surface finish. It is suitable for wet or dry operation and is used by machinists and tool-room grinders working on surface grinders, cylindrical grinders, and CNC cutting tool machines.

This wheel is intended for grinding soft carbon steels, tool steels, and superalloys. The Series 25A Type 1 construction and vitrified bond make it well-suited for precision flat-surface applications where consistent geometry and free cutting action matter. It fits standard surface grinder spindles with a 1-1/4 inch arbor bore and is sold as a single wheel per package. Typical users include tool-and-die shops, maintenance machinists, and production grinding operations.

Key Features

• Pink aluminum oxide abrasive, semi-friable for consistent cutting action on hard alloys
• Vitrified bond provides rigidity and porosity for effective coolant flow in wet grinding
• 60 grit, K hardness (medium grade) balances material removal rate and surface finish
• Rated to 3600 RPM maximum operating speed
• Wet and dry operation compatible
• No taper, no recess — standard Type 1 straight wheel geometry

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and superalloys. Fits spindles with a 1-1/4 inch arbor bore.

Installation Notes

Installation should be performed by a qualified machinist or grinder operator. Before mounting, inspect the wheel for cracks or chips using the ring test — do not install a damaged wheel. Power down and lock out the grinder before changing wheels. Confirm the spindle speed does not exceed the 3600 RPM maximum marked on the wheel, and always dress the wheel before grinding to ensure proper face geometry and balance.