Norton 66253263169 Surface Grinding Wheel 46 Grit 12 in

Product Description

The NORTON 66253263169 is a Type 5 surface grinding wheel engineered for demanding material removal on ferrous and non-ferrous workpieces. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent cut rate and wheel integrity under the heat and pressure of surface and cylindrical grinding operations. The wheel measures 12 inches in diameter and 1-1/2 inches thick with a 5-inch arbor hole, weighing approximately 10.9 pounds. A 46-grit, J-hardness (coarse grade) specification makes it well-suited for aggressive stock removal where a finer finish is a secondary concern. Licensed grinding professionals and tool room machinists are the primary installers and operators.

This wheel is rated for use on surface grinders and cylindrical grinders in shop, tool room, and production environments. It is designed to work 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 one-side recessed Type 5 geometry, with a 7-1/2-inch recess diameter and 1/2-inch recess depth, reduces overall weight and clears the wheel guard on compatible spindle setups, making it appropriate for both conventional and heavier-duty surface grinding applications.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent stock removal and thermal stability
• 46 grit, J hardness (coarse grade) rated for aggressive material removal
• Type 5 one-side recessed profile with 7-1/2-inch recess diameter and 1/2-inch recess depth
• Maximum operating speed of 2070 RPM
• Gray, non-tapered wheel with porous structure to aid chip clearance and reduce heat buildup
• Suitable for 400 Series stainless, carbon steels, tool steels, aluminum, and cast and ductile iron

Compatibility

Designed for use with surface grinders and cylindrical grinders. Compatible material applications include 400 Series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 standards for abrasive wheel machinery. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the grinder completely before changing wheels. Never exceed the maximum RPM stamped on the wheel blotter.