Norton 66252941056 Surface Grinding Wheel 7in 80 Grit

Product Description

The NORTON 66252941056 is a Type 1 straight surface grinding wheel engineered for precision stock removal on ferrous metals. Built on an aluminum oxide abrasive with a vitrified bond, this wheel runs at a maximum of 3600 RPM and delivers consistent, controlled cutting action across a medium-grade, semi-friable structure. The hardness code L rating keeps the wheel from glazing on softer work materials while maintaining wheel integrity under sustained dry operation. Licensed machinists, tool-and-die shops, and industrial grinding techs reach for this wheel when flatness and surface finish matter. The 38A series designation indicates a white aluminum oxide formulation suited to heat-sensitive and precision grinding applications.

This wheel is sized at 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole, making it a direct fit for standard surface grinder spindles in that bore class. Rated for dry operation only, it is well-suited to surface grinders, cylindrical grinders, and CNC cutting tool machines working soft carbon steels, tool steels, and super alloys. It carries no recess and is non-tapered, meaning it mounts flat and true to the spindle flange.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent, free-cutting action
• 38A white aluminum oxide series — reduces heat buildup on sensitive tool steels and super alloys
• Medium grade, semi-friable structure extends wheel life while resisting glazing
• Hardness code L balances wear resistance with self-dressing behavior
• Non-porous, non-tapered, no-recess Type 1 profile for flat, repeatable mounting
• Rated for dry operation up to 3600 RPM

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a 1-1/4 inch arbor bore and a Type 1 straight wheel profile. Suitable for grinding soft carbon steels, tool steels, and super alloys.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified machinist or grinding equipment operator following ANSI B11.9 and OSHA 29 CFR 1910.215 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. Never exceed the 3600 RPM maximum speed rating stamped on the wheel.