Norton 66253043742 Surface Grinding Wheel 8in 100 Grit

Product Description

The NORTON 66253043742 is a Type 1 surface grinding wheel designed for precision material removal on ferrous and non-ferrous metals in industrial and shop environments. It measures 8 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The wheel is constructed from aluminum oxide abrasive bonded with a vitrified bond, producing a gray, porous wheel rated at a K hardness code — classified as medium hardness — and a fine 100-grit finish. Rated to a maximum of 3600 RPM, this wheel suits high-demand grinding operations where consistent stock removal and surface finish are required. Licensed machinists, tool-and-die makers, and industrial maintenance technicians are the typical end users.

This wheel is built for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It performs across a broad range of material applications including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The vitrified bond allows for free cutting action and good form retention, making it well suited for flat surface work and precision grinding passes in both production and maintenance environments.

Key Features

• Aluminum oxide abrasive for versatile ferrous and non-ferrous metal grinding
• Vitrified bond construction promotes free cutting and consistent wheel form
• 100 grit, fine grade for controlled stock removal and improved surface finish
• K hardness (medium) balances wheel life and cutting efficiency
• Porous structure supports chip clearance and cooler grinding temperatures
• 3600 RPM maximum speed rating for standard surface and cylindrical grinder spindles

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. Series designation: 32A Type 1, specification 32A100-KVBE.

Installation Notes

Wheel mounting and dressing should be performed by a qualified machinist or grinding technician following ANSI B11.9 safety standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and ensure the arbor hole fits the spindle without forcing. Power down and lock out the grinder before installing or removing the wheel. Never exceed the rated maximum RPM stamped or labeled on the wheel.