Norton 66252941168 Surface Grinding Wheel 7in 100 Grit

Product Description

The NORTON 66252941168 is a Type 1 surface grinding wheel designed for precision material removal on ferrous metals and high-performance alloys. Built with white aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal and a fine surface finish. It measures 7 inches in diameter, 1/2 inch thick, and features a 1-1/4 inch arbor hole. The 100-grit, K-hardness rating places it in the fine-grade, medium-hardness category, making it well-suited for controlled grinding passes where finish quality matters. The 38A series specification indicates a semi-friable grain structure that self-dresses during use, extending wheel life on demanding applications.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in professional shop environments. It is rated for soft carbon steels, tool steels, and super alloys, covering a wide range of toolroom and production grinding tasks. The non-porous, non-recessed, flat Type 1 profile mounts directly to standard spindle arbors and is suitable for both maintenance shops and high-cycle production grinding operations. Licensed machinists, tool-and-die makers, and industrial grinding technicians are the primary installers and operators.

Key Features

• White aluminum oxide abrasive with semi-friable grain for consistent self-dressing action
• Vitrified bond provides rigid structure and accurate form-holding during surface grinding
• 100 grit, K hardness (fine grade, medium hardness) for controlled material removal and smooth finishes
• Type 1 flat wheel profile with no recess, compatible with standard surface and cylindrical grinder arbors
• Rated for soft carbon steels, tool steels, and super alloys
• Maximum operating speed of 3600 RPM

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Fits spindles requiring a 1-1/4 inch arbor hole.

Installation Notes

Grinding wheel installation and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 safety standards. Always perform a ring test before mounting and confirm the machine spindle speed does not exceed the 3600 RPM maximum rating marked on the wheel. Power down and lock out the grinder before mounting or removing the wheel. Never force the wheel onto the arbor or use an adapter that alters the rated arbor hole size.