Norton 66252939660 Surface Grinding Wheel 80 Grit

Product Description

The NORTON 66252939660 is a Type 1 surface grinding wheel designed for material removal and surface finishing on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent cutting action and thermal resistance under sustained grinding pressure. The wheel measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole, and is rated to a maximum of 3600 RPM. At 80 grit with a J hardness code (medium grade), it balances stock removal speed with reasonable surface finish. This wheel is installed and dressed by machinists and tool-and-die professionals working with surface grinders and cylindrical grinders.

This grinding wheel is suited for production and maintenance grinding across a wide range of materials, including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous, vitrified structure promotes coolant flow and chip clearance, making it effective for both wet and dry grinding operations in job shop and production environments.

Key Features

• Aluminum oxide abrasive for reliable performance on ferrous and non-ferrous metals
• Vitrified bond provides rigidity, thermal stability, and consistent wheel form retention
• 80 grit, J hardness (medium grade) balances material removal rate with surface finish quality
• Porous structure supports coolant flow and reduces heat buildup during grinding
• No recess, no taper — standard Type 1 flat wheel geometry for straightforward mounting
• Series 32A Type 1 specification: 32A80-JVBE

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified machinists following machine manufacturer guidelines and ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the machine before mounting or removing the wheel. Do not exceed the rated maximum speed of 3600 RPM under any operating condition.