Norton 66253263128 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253263128 is a Type 1 vitrified aluminum oxide surface grinding wheel built for heavy-stock removal on ferrous and non-ferrous metals. It measures 12 inches in diameter, 1-1/2 inches thick, with a 5-inch arbor hole, and carries a 46-grit coarse grade with an H hardness code. The vitrified bond provides rigidity and porosity, helping maintain wheel form under load while allowing coolant penetration. Rated at a maximum of 2,070 RPM, this wheel suits production grinding environments where consistent cut rate and form retention are priorities. It weighs 11.96 pounds.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both job shop and production settings. It performs on a broad range of materials including 400 Series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The coarse 46-grit specification makes it well suited for aggressive material removal passes rather than finish grinding work.

Key Features

• Type 1 flat wheel profile — no recess, no taper — for straightforward surface and cylindrical grinding setups
• Aluminum oxide abrasive with vitrified bond delivers consistent stock removal on steel and iron
• Porous structure supports coolant flow and chip clearance during extended grinding cycles
• 46-grit coarse grade optimized for rapid material removal on hard and soft steels
• H hardness (soft-to-medium range) helps prevent loading on harder workpiece materials
• Series designation 32A46-HVBE provides a direct reference for wheel specification matching

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Confirmed compatible material applications 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 a qualified grinding machine operator or maintenance technician following ANSI B11.9 and OSHA 29 CFR 1910.215 requirements. Always power down and lock out the grinder before changing wheels, inspect the wheel for cracks or chips before mounting, and perform a ring test prior to installation. Never exceed the 2,070 RPM maximum speed rating marked on the wheel. Proper flanges and a blotter must be used when mounting; do not use damaged or improperly sized flanges.