Norton 66253262840 Surface Grinding Wheel 46 Grit 12in

Product Description

The NORTON 66253262840 is a Type 1 surface grinding wheel engineered for aggressive stock removal on ferrous and non-ferrous metals. Built with an aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rate and free-cutting action across a range of industrial grinding applications. It measures 12 inches in diameter, 1 inch thick, and carries a 3-inch arbor hole. The 46-grit, G-hardness (coarse grade) specification places it in the working range for rapid material removal rather than fine finishing. Rated at a maximum of 2,070 RPM, it is sized for use on full-size surface and cylindrical grinding machines. Weighing 9.045 pounds, the wheel suits fixed-machine grinding rather than handheld use.

This wheel is a fit for production and maintenance grinding environments where operators work with hard and soft carbon steels, 400 series stainless steel, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous, vitrified structure promotes coolant flow and chip clearance, helping reduce heat buildup during extended grinding passes. The 32A series designation identifies this as a standard NORTON aluminum oxide formulation for general-purpose ferrous grinding.

Key Features

• Type 1 flat wheel profile with no recess — mounts directly on straight-arbor machine spindles
• Aluminum oxide abrasive with vitrified bond for consistent cut rate and wheel integrity under load
• 46 grit, G hardness (coarse) — suited for rapid stock removal rather than finishing passes
• Porous structure promotes coolant penetration and chip evacuation to reduce thermal damage
• 3-inch arbor hole fits standard surface and cylindrical grinder spindle configurations
• Rated at 2,070 RPM maximum — verify machine speed before mounting

Compatibility

Designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Series designation is 32A Type 1 with specification code 32A46-GVBEP.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified machine operator or maintenance technician in accordance with ANSI B11.9 and applicable shop safety standards. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before installation — do not use a damaged wheel. Confirm the machine spindle speed does not exceed the 2,070 RPM maximum rating marked on the wheel before operating.