Norton 66253263483 Surface Grinding Wheel 46 Grit 12in

Product Description

The NORTON 66253263483 is a Type 7 vitrified surface grinding wheel rated for demanding material removal on ferrous and non-ferrous stock. Built from aluminum oxide abrasive with a coarse 46-grit rating and J hardness code, this wheel delivers aggressive stock removal while maintaining dimensional control. The vitrified bond provides rigidity and porosity management suited to wet or dry surface grinding operations. At 13.85 pounds and a maximum operating speed of 2070 RPM, this wheel is engineered for use on dedicated surface and cylindrical grinders. Licensed grinding technicians and tool-room machinists are the primary installers and operators of this wheel.

This wheel is sized at 12 inches in diameter, 2 inches thick, with a 5-inch arbor hole, making it compatible with medium to large surface grinders and cylindrical grinders. The two-sided recess configuration features a recess depth of 0.5 inches and a recess diameter of 7.5 inches. Material applications include 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The semi-friable aluminum oxide grain self-sharpens under load, reducing glazing on harder alloys and extending wheel life between dressings.

Key Features

• Aluminum oxide abrasive grain rated semi-friable for self-sharpening performance on hard and soft steels
• Vitrified bond provides consistent cutting action and structural stability at operating speed
• Coarse 46-grit, J hardness (medium hardness rating) for aggressive stock removal
• Type 7 two-sided recessed configuration with 7.5-inch recess diameter and 0.5-inch recess depth
• Maximum operating speed of 2070 RPM — confirm machine speed before mounting
• Gray, non-porous, non-tapered wheel construction in the 32A series specification

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 workpieces. Specifications conform to the 32A46-JVBE designation.

Installation Notes

Mounting and dressing of grinding wheels must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 requirements. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Never exceed the 2070 RPM maximum operating speed marked on the wheel. Power down and lock out the grinder before installing or removing the wheel, and use proper flanges and blotters rated for the arbor size.