Norton 66253246851 Surface Grinding Wheel 8 in 60 Grit

Product Description

The NORTON 66253246851 is a Type 5 surface grinding wheel engineered for aggressive stock removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel measures 8 inches in diameter and 1 inch thick, with a 1-1/4 inch arbor hole. The J hardness rating and 60 grit designation place it in the medium grade range, making it well suited for roughing passes where material removal rate matters more than surface finish refinement. It carries a maximum operating speed of 3,600 RPM. Licensed machinists, tool and die makers, and precision grinding shops are the primary installers and operators of this wheel.

This wheel is designed for use on surface grinders and cylindrical grinders in production and job-shop environments. It performs across a broad range of materials including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The Type 5 recessed profile features a one-side recess measuring 1/2 inch deep and 3 inches in diameter, which reduces wheel weight and improves clearance in certain chuck and fixture configurations common to surface grinding setups.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut rate and wheel integrity
• 60 grit, J hardness (medium grade) suited for roughing and general-purpose surface grinding
• Type 5 one-side recessed design with 3 inch recess diameter and 1/2 inch recess depth
• Rated to 3,600 RPM maximum operating speed
• Non-porous structure for predictable performance across ferrous and non-ferrous workpieces
• Series 32A Type 5 construction with specification code 60J8V32A

Compatibility

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

Installation Notes

Wheel mounting and dressing should be performed by a qualified machinist or grinding equipment operator following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before installation and perform a ring test; never use a wheel that fails inspection. Verify that the machine spindle speed does not exceed the 3,600 RPM rating marked on the wheel.