Norton 66253263172 Surface Grinding Wheel 60 Grit 12 in

Product Description

The NORTON 66253263172 is a Type 5 surface grinding wheel engineered for aggressive material removal on ferrous and non-ferrous metals. Built on a vitrified bond with 32A aluminum oxide abrasive, it delivers consistent cut rate and free-cutting action across a wide range of workpiece materials. The wheel measures 12 inches in diameter and 1-1/2 inches thick with a 5-inch arbor hole and a 7-1/2-inch recessed diameter on one side. It carries a K hardness code and medium grade, rated to a maximum of 2705 RPM. Licensed machinists and grinding technicians install this wheel on surface grinders and cylindrical grinders in production and tool-room environments.

This wheel is suited for precision surface grinding applications across both light and heavy-stock-removal operations. Its aluminum oxide construction and vitrified bond make it a practical choice for work on 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 retention and chip clearance during extended grinding cycles, reducing heat buildup at the workpiece surface. It is designed for use on surface grinders and cylindrical grinders in industrial, maintenance, and toolroom settings.

Key Features

• Type 5 recessed wheel with a 1/2-inch recess depth and 7-1/2-inch recess diameter on one side
• 32A aluminum oxide abrasive with vitrified bond for consistent, controlled cut rate
• 60 grit, K hardness, medium grade — balanced for stock removal and surface finish
• Porous structure supports coolant flow and chip evacuation during extended runs
• Rated to 2705 RPM maximum operating speed
• Compatible with 400 series stainless, carbon steels, tool steels, aluminum, and iron alloys

Compatibility

Designed for use with surface grinders and cylindrical grinders. Suitable for material applications including 400 Series Stainless, Hard Carbon Steels, Soft Carbon Steels, Tool Steels, Aluminum, Cast Iron, Ductile Iron, and Gray Iron, as specified in the manufacturer data.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment operator. Before mounting, power down and lock out the grinder in accordance with applicable OSHA lockout/tagout procedures. Verify that the machine spindle speed does not exceed the 2705 RPM maximum rating marked on the wheel. Inspect the wheel for cracks or chips before mounting, and always ring-test per ANSI B7.1 standards before placing the wheel in service.