Norton 66253262718 Surface Grinding Wheel 60 Grit 12 in

Product Description

The NORTON 66253262718 is a Type 1 vitrified aluminum oxide surface grinding wheel designed for precision stock removal on ferrous metals and high-performance alloys. Built to the 38A series specification, it features a 60-grit, medium-grade abrasive structure with a K hardness code and a semi-friable grain that self-sharpens under load. The wheel measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole, and carries a maximum operating speed of 2,070 RPM. At 9.04 pounds, it is suited for production surface grinding where consistent cut rate and wheel life are both priorities.

This wheel is rated for use on soft carbon steels, tool steels, and super alloys. It installs on surface grinders, cylindrical grinders, and CNC cutting tool machines. The non-porous, vitrified bond provides rigidity and precise form-holding, making it appropriate for flat-surface finishing work in job shops, tool rooms, and production grinding environments. Licensed machinists and toolroom grinders are the primary installers of wheels in this class.

Key Features

• 38A series aluminum oxide grain — semi-friable, self-sharpening under load
• Vitrified bond for rigid, precise form retention
• 60 grit, K hardness (medium grade) balanced for soft carbon steels, tool steels, and super alloys
• Non-porous, no-recess Type 1 flat wheel profile
• Rated to 2,070 RPM maximum operating speed
• White wheel color for easy dressing inspection

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a 3-inch arbor hole and a 12-inch diameter Type 1 wheel. Rated material applications include soft carbon steels, tool steels, and super alloys per supplier specifications.

Installation Notes

Grinding wheel mounting must be performed by a qualified machinist or grinding machine operator. Always power down and lock out the machine before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before installation and never exceed the 2,070 RPM maximum speed marked on the wheel. Flanges, blotters, and mounting hardware must conform to ANSI B11.9 and the machine manufacturer's requirements.