Norton 66252939461 Surface Grinding Wheel 7in 60 Grit

Product Description

The NORTON 66252939461 is a Type 1 surface grinding wheel engineered for aggressive material removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and vitrified bond, it delivers consistent cutting action and thermal resistance throughout its service life. The wheel measures 7 inches in diameter and 1/4 inch thick, with a 1-1/4 inch arbor hole for standard spindle mounting. At 60 grit with a medium (K) hardness rating, it is sized for stock removal passes rather than finish grinding. Maximum operating speed is 3600 RPM. It is installed and operated by machinists and tool grinders in precision grinding applications.

This wheel is suited for surface grinding, cylindrical grinding, and CNC cutting tool machine applications in both production and job-shop environments. Rated material applications include 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The porous, semi-friable ceramic structure promotes cool cutting on heat-sensitive materials and resists glazing during prolonged use. It is appropriate for both light production runs and maintenance grinding tasks where a consistent, free-cutting wheel is required.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent stock removal and thermal stability
• 60 grit, medium grade (Hardness Code K) for efficient material removal on hard metals
• Porous, semi-friable structure resists glazing and promotes cooler cuts
• Type 1 straight wheel, no recess, fits standard surface and cylindrical grinder spindles
• Maximum rated speed of 3600 RPM
• Rated for use on stainless steel, tool steels, titanium, super alloys, and cast and ductile irons

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated material applications include 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheels must be installed and operated by qualified personnel familiar with ANSI B11.9 and OSHA 29 CFR 1910.215 standards for abrasive wheel machinery. Before mounting, inspect the wheel for cracks or chips using the ring test; never mount a damaged wheel. Power down and lock out the grinder before changing wheels, confirm the machine spindle speed does not exceed the wheel's 3600 RPM maximum rating, and use the correct flange size and arbor hardware for a secure, centered fit. Always dress the wheel after mounting and before the first cut.