Norton 66253246846 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253246846 is a Type 5 recessed surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Built with an aluminum oxide abrasive bonded in a vitrified matrix, this wheel measures 8 inches in diameter, 3/4 inches thick, and carries a 1-1/4 inch arbor hole with a 3-inch one-side recess at 1/4 inch depth. The 46-grit coarse grade and J hardness code make it well-suited for aggressive material removal where surface finish is secondary to cutting speed. Rated to 3600 RPM, it is intended for use on cylindrical and surface grinders in professional shop environments.

This wheel is used on surface grinders and cylindrical grinders in metalworking and fabrication shops. It handles 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 coarse 46-grit specification makes it appropriate for rough grinding passes and weld cleanup where a finer finish is not required. It is typically installed and dressed by machinists or tool-and-die technicians working in production or maintenance grinding applications.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent, controlled cutting action
• Type 5 one-side recessed wheel geometry accommodates flange-mounted surface grinder spindles
• 46-grit coarse grade delivers aggressive stock removal on hard and soft metals
• J hardness rating provides medium wheel hardness suitable for a wide range of metalworking materials
• Rated to 3600 RPM for safe operation on standard surface and cylindrical grinders
• Specification code 46J8V32A identifies abrasive type, grit, hardness, structure, and bond for precise reordering

Compatibility

Designed for use with surface grinders and cylindrical grinders. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Part of the Norton 32A Type 5 series.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or grinder operator following ANSI B11.9 safety standards for grinding machines. 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 mount a damaged wheel. Do not exceed the 3600 RPM maximum speed rating under any circumstances.