Norton 66253262572 Surface Grinding Wheel 46 Grit 12in

Product Description

The NORTON 66253262572 is a Type 1 straight surface grinding wheel engineered for heavy-duty material removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent, controlled cutting action across a wide range of materials. The wheel measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole, and carries a coarse 46 grit rating with a K hardness code — a medium-hardness wheel suited for aggressive stock removal without loading. Rated to a maximum of 2070 RPM, it is designed for professional use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Installation and dressing are performed by trained grinding machine operators.

This wheel is well-suited for production and job-shop grinding environments where consistent material removal rates are required. Rated applications include 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The porous, vitrified structure provides free chip clearance and reduces heat buildup at the workpiece, making it appropriate for both wet and dry surface grinding operations where surface finish and dimensional control are priorities.

Key Features

• Aluminum oxide abrasive for broad metal compatibility including stainless, tool steel, cast iron, and aluminum
• Vitrified bond with porous structure promotes chip clearance and cooler cutting action
• 46 grit coarse grade for aggressive stock removal applications
• K hardness (medium) resists loading while releasing dull grains efficiently
• Type 1 straight wheel profile fits standard surface grinder spindles with a 3-inch arbor hole
• Series 32A specification — gray, non-tapered, no-recess design for direct spindle mounting

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a Type 1 straight wheel with a 3-inch arbor hole and 12-inch diameter. Compatible material applications include 400 Series Stainless, Hard Carbon Steels, Soft Carbon Steels, Tool Steels, Aluminum, Cast Iron, Ductile Iron, and Gray Iron.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 standards. Before mounting, inspect the wheel for cracks or chips using the ring test — do not use a damaged wheel. Power down and lock out the grinder before changing wheels, and confirm the machine spindle speed does not exceed the 2070 RPM maximum rating stamped on the wheel. Always use the correct flanges and blotters for the arbor size, and run the wheel at operating speed with guards in place for at least one minute before presenting work.