Norton 66253262842 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253262842 is a Type 1 surface grinding wheel engineered for demanding material removal on ferrous and non-ferrous workpieces. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent, controlled cutting action across coarse-grade stock removal applications. It measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole, and carries a maximum operating speed of 2070 RPM. The H hardness rating and 46 grit make it well suited to aggressive roughing passes on hard and soft carbon steels, tool steels, cast iron, and similar materials. Licensed machinists and grinding specialists rely on this specification for precision flatwork on surface grinders and cylindrical grinders.

This wheel is used in surface grinding operations across production machine shops, tool rooms, and maintenance facilities. The 32A46-HVBEP specification targets both OEM and job-shop environments where consistent wheel performance across a range of materials is required. The porous, vitrified structure promotes cool cutting and chip clearance, making it appropriate for longer grinding cycles where heat buildup is a concern. Suitable for CNC cutting tool machines, cylindrical grinders, and surface grinders in both light industrial and heavy production settings.

Key Features

• 46 grit coarse aluminum oxide abrasive for aggressive stock removal
• Vitrified bond with porous structure for cool cutting and chip clearance
• H hardness (soft-to-medium range) helps maintain free-cutting action on harder workpiece materials
• Type 1 flat wheel profile with no recess — straightforward mounting on standard arbors
• Rated to 2070 RPM maximum operating speed
• Series specification 32A46-HVBEP for cross-reference and replacement ordering

Compatibility

Rated for use on 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines equipped with a 3-inch arbor.

Installation Notes

Grinding wheel installation and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 1910.215 safety standards. Before mounting, perform a ring test to check for cracks and confirm the wheel speed rating meets or exceeds the machine spindle speed. Power down and lock out the grinder before installing or removing any wheel. Never exceed the maximum operating speed of 2070 RPM marked on the wheel blotter.