Norton 66253246842 Surface Grinding Wheel 8 in 46 Grit

Product Description

The NORTON 66253246842 is a Type 5 recessed surface grinding wheel designed for aggressive material removal on ferrous and non-ferrous metals. Built from aluminum oxide abrasive with a vitrified bond, this wheel measures 8 inches in diameter and 3/4 inches thick with a 1-1/4 inch arbor hole. The 46-grit coarse grade and H hardness rating make it well-suited for heavy stock removal where surface finish is secondary to cut rate. Rated at a maximum of 3105 RPM, it is intended for use on cylindrical and surface grinders in production and maintenance grinding applications.

This wheel is commonly used in shops and industrial settings grinding 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The one-side recessed Type 5 profile with a 3-inch recess diameter and 1/4-inch recess depth accommodates flange clearance on compatible spindle configurations. It is installed by machinists, tool and die makers, and maintenance professionals who require a durable, consistent-cutting wheel for surface and cylindrical grinding operations.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut and shape retention
• 46-grit coarse grade for high stock removal on a wide range of metals
• Type 5 one-side recessed profile with 3-inch recess diameter and 1/4-inch recess depth
• H hardness code rated as soft wheel hardness for cool cutting action
• Maximum operating speed of 3105 RPM
• Series 32A Type 5 specification: 46H8V32A

Compatibility

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

Installation Notes

Installation of grinding wheels must be performed by qualified personnel following ANSI B7.1 safety standards and the grinder manufacturer guidelines. 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 exceed the maximum RPM marked on the wheel, and ensure all flanges and arbor hardware are clean and properly seated before starting the machine.