Norton 66252835786 Surface Grinding Wheel 60 Grit 6 in

Product Description

The NORTON 66252835786 is a Type 1 straight surface grinding wheel engineered for precision stock removal on a wide range of ferrous and non-ferrous metals. It measures 6 inches in diameter, 0.25 inches thick, with a 1.25-inch arbor hole. The wheel is made from aluminum oxide abrasive bonded with a vitrified bond, delivering consistent cut rates and free-cutting action at a maximum speed of 4140 RPM. At a 60-grit, K-hardness (medium) rating, it is well-suited to moderate material removal where surface finish and wheel longevity both matter. Weight is approximately 0.58 pounds. This wheel is installed by machinists, toolroom technicians, and maintenance grinders working on production or job-shop equipment.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It performs across a broad material range including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The porous structure of the wheel promotes coolant flow and chip clearance, reducing heat buildup during extended grinding passes. The 32A series designation reflects Norton's aluminum oxide formulation optimized for tool steels and ferrous alloys common in precision grinding applications.

Key Features

• Type 1 straight wheel profile with no recess, no taper — direct drop-in fit for standard arbor setups
• 60-grit aluminum oxide abrasive for medium stock removal with controlled surface finish
• K hardness (medium grade) vitrified bond maintains wheel integrity under consistent load
• Porous structure aids coolant penetration and swarf clearance during wet or dry grinding
• Rated to 4140 RPM maximum — verify machine RPM before mounting
• Compatible with a broad material range including stainless steel, tool steel, cast iron, and aluminum

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Specifications code: 32A60-KVBE.

Installation Notes

Mounting and dressing of grinding wheels must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 standards. Power down and lock out the grinder before installing or removing the wheel. Inspect the wheel for cracks or chips before mounting — never mount a damaged wheel. Confirm the machine spindle speed does not exceed the 4140 RPM maximum rating stamped on the wheel, and always perform a no-load ring test and trial run behind a guard before grinding.