Norton 66252939833 Surface Grinding Wheel 120 Grit

Product Description

The NORTON 66252939833 is a Type 1 surface grinding wheel designed for precision material removal on ferrous metals and high-performance alloys. Built on an aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent, controlled cutting action across a wide range of grinding applications. It measures 7 inches in diameter and 1/4 inch thick with a 1-1/4 inch arbor hole, and is rated to a maximum of 3600 RPM. The 120 grit, J hardness (fine grade) specification makes it well suited for finishing passes where surface quality matters as much as stock removal rate.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in shop and production environments. Its semi-friable aluminum oxide grain self-sharpens under load, making it effective on soft carbon steels, tool steels, and super alloys. The vitrified bond provides rigidity and porosity control suited to precision grinding where dimensional accuracy is critical. Licensed machinists and tool grinders in both job shop and production settings will find this wheel appropriate for finish grinding flat and cylindrical surfaces.

Key Features

• Aluminum oxide abrasive grain — semi-friable construction promotes consistent self-sharpening during use
• Vitrified bond for rigidity and dimensional stability throughout wheel life
• 120 grit fine grade delivers smooth surface finishes on ferrous and alloy workpieces
• Non-tapered, non-recessed Type 1 flat wheel geometry for straightforward mounting
• Rated to 3600 RPM maximum operating speed
• White wheel color aids visual inspection of bond condition and wear during service

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 standard 1-1/4 inch arbor spindles on machines accepting a 7 inch diameter Type 1 wheel.

Installation Notes

Grinding wheel installation and dressing must be performed by qualified personnel following applicable ANSI B11 and OSHA abrasive wheel safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test per manufacturer guidelines. Power down and lock out the grinder before mounting or removing the wheel. Never exceed the maximum rated RPM of 3600 stamped or labeled on the wheel.