Norton 66252940865 Surface Grinding Wheel 46 Grit

Product Description

The NORTON 66252940865 is a Type 1 straight surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Built with an aluminum oxide abrasive grain and a vitrified bond, this wheel measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. It carries a coarse 46 grit rating and a J hardness code, making it well-suited for aggressive material removal while maintaining acceptable wheel life on harder workpieces. Maximum operating speed is rated at 3600 RPM. The vitrified bond structure is porous, supporting free cutting action and heat dissipation during grinding passes. This wheel is installed and operated by machinists and grinding technicians in shop environments.

This wheel is engineered for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It is rated for use on 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The Series 32A specification identifies the exact grain, grade, and bond formulation, allowing direct cross-reference when ordering replacements. Typical applications include surface finishing, tool reconditioning, and precision flat grinding operations in job shops and production environments.

Key Features

• Type 1 straight wheel profile — no recess, no taper — for standard surface and cylindrical grinder spindles
• Aluminum oxide abrasive with vitrified bond for consistent cut rate and shape retention
• Coarse 46 grit with J hardness code delivers aggressive stock removal on a range of metals
• Porous structure supports coolant penetration and reduces heat buildup at the workpiece interface
• Rated for 400 series stainless, carbon steels, tool steels, aluminum, and cast and ductile iron
• Series 32A specification (32A46-JVBE) enables direct replacement ordering

Compatibility

Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines accepting a 7 inch diameter, 1-1/4 inch arbor hole Type 1 wheel. Rated for use on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 standards for abrasive wheel machinery. Always inspect the wheel for cracks or chips before mounting and perform a ring test prior to installation. Power down and lock out the grinder before mounting or removing the wheel. Never exceed the 3600 RPM maximum speed rating marked on the wheel.