Norton 66252938882 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252938882 is a Type 1 surface grinding wheel engineered for precision stock removal on ferrous materials. Measuring 7 inches in diameter and 1/2 inch thick with a 1-1/4 inch arbor hole, it is built on an aluminum oxide abrasive with a vitrified bond and rated to a maximum of 3600 RPM. The 60 grit, K hardness (medium grade) specification places this wheel in the working range for aggressive yet controlled surface grinding. It carries the 32AA60-KVTR spec designation and features a porous structure that promotes coolant flow and chip clearance during cut. Machinists and tool and die professionals use this wheel for flat surface work where consistent finish and material removal are required.

This wheel is suited for surface grinding operations in manufacturing, toolroom, and maintenance environments. Its aluminum oxide composition makes it an appropriate choice for hard carbon steels, soft carbon steels, and tool steels. It is compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines. The 7-inch diameter and standard 1-1/4 inch bore fit common spindle configurations found in production and job-shop grinding setups.

Key Features

• Type 1 straight wheel profile — no recess, no taper
• Aluminum oxide abrasive with vitrified bond for rigid, controlled cut
• 60 grit medium grade (K hardness) for balanced stock removal and surface finish
• Porous structure supports chip clearance and coolant retention
• 3600 RPM maximum operating speed
• 32AA60-KVTR specification designation for exact replacement ordering

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Recommended for hard carbon steels, soft carbon steels, and tool steels. The 1-1/4 inch hole size fits standard surface grinder spindle arbors accepting 7-inch Type 1 wheels.

Installation Notes

Mounting and dressing of grinding wheels should be performed by qualified machine operators or maintenance personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 guarding requirements. Inspect the wheel for cracks or chips before mounting — never use a damaged wheel. Ensure the machine spindle speed does not exceed the 3600 RPM maximum marked on the wheel. Ring-test the wheel before installation and allow a guarded run-up period before bringing the workpiece into contact.