Norton 66253263459 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253263459 is a Type 1 surface grinding wheel engineered for high-stock-removal applications on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel operates at a maximum of 2070 RPM and carries a coarse 46-grit rating with an I hardness code. The vitrified bond provides rigidity and open porosity, which promotes chip clearance and reduces heat buildup during heavy grinding passes. At 18.09 pounds, this is a substantial wheel suited for production-level surface and cylindrical grinding operations performed by skilled machinists and grinding technicians.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its aluminum oxide composition makes it effective across 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 grit and medium hardness rating suit applications where aggressive material removal is the priority over fine surface finish. It fits machines with a 3 inch arbor bore and accepts standard straight-wheel mounting hardware.

Key Features

• Aluminum oxide abrasive grain for versatile ferrous and non-ferrous metal grinding
• Vitrified bond with open porous structure promotes chip clearance and reduces heat
• 46 grit coarse grade for aggressive stock removal
• I hardness code (medium) balances wheel wear rate against cutting efficiency
• Type 1 straight wheel configuration with no recess, compatible with standard surface and cylindrical grinder spindles
• Specification designation 32A46-IVBE for cross-reference and replacement ordering

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting should be performed by a qualified operator following ANSI B11.9 and OSHA 29 CFR 1910.215 standards for abrasive wheel machinery. Always ring-test the wheel before mounting and inspect for cracks or chips. Power down and lock out the grinder before changing wheels. Never exceed the 2070 RPM maximum speed rating marked on the wheel.