Norton 66253263144 Surface Grinding Wheel 46 Grit 12 in

Product Description

The NORTON 66253263144 is a Type 1 surface grinding wheel engineered for demanding stock removal and surface finishing on ferrous and non-ferrous metals. Built to the 32A series specification, it uses an aluminum oxide abrasive bonded in a vitrified matrix, producing a coarse 46-grit cut rated at I hardness for consistent, controlled material removal. At 12 inches in diameter and 1-1/2 inches thick with a 3-inch arbor hole, this wheel mounts to standard surface and cylindrical grinders. Rated at 2,070 RPM maximum, it is suited for high-volume grinding applications where wheel durability and open grain structure matter. At 13.57 pounds, it is a substantial wheel intended for production-level work.

This wheel is appropriate for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both shop and industrial environments. Compatible material applications include 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The porous, vitrified bond structure promotes chip clearance and reduces heat buildup during extended grinding passes, making it practical across a broad range of ferrous and non-ferrous workpieces in production and tool-room settings.

Key Features

• Type 1 straight wheel profile with no recess for direct surface grinding mount
• 32A aluminum oxide abrasive with vitrified bond for rigid, consistent cut
• 46 grit coarse grade for efficient stock removal on steel, cast iron, and aluminum
• Porous structure promotes coolant flow and chip evacuation, reducing heat at the wheel face
• I hardness code (medium) balances wheel life with consistent grit exposure
• 2,070 RPM maximum speed rating for compatibility with standard production grinders

Compatibility

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

Installation Notes

Mounting and dressing of grinding wheels should be performed by qualified personnel following ANSI B11.9 and OSHA 1910.215 grinding safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the grinder before changing wheels, confirm the spindle speed does not exceed the wheel's 2,070 RPM maximum rating, and use the correct arbor flanges and blotters for the 3-inch hole size. Never exceed the rated RPM under any operating condition.