Norton 66252836380 Surface Grinding Wheel 46 Grit 6 in

Product Description

The NORTON 66252836380 is a Type 1 surface grinding wheel engineered for precision stock removal on ferrous and non-ferrous metals. Built around an aluminum oxide abrasive with a vitrified bond, this wheel measures 6 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The 46-grit, coarse-grade specification and K hardness rating make it well suited for aggressive material removal while maintaining dimensional control on the workpiece. It carries a maximum operating speed of 4140 RPM. The gray, non-tapered, porous structure promotes chip clearance and coolant flow during wet or dry grinding operations. Licensed machinists, tool-and-die makers, and industrial maintenance technicians are the typical installers.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its material application range covers 400 Series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron, making it a versatile choice across general machining and tool room environments. The Series 32A Type 1 designation identifies the aluminum oxide formulation and straight-wheel profile standard for flat-surface and OD grinding setups.

Key Features

• 46-grit coarse grade for high-rate stock removal
• K hardness (medium) vitrified bond resists breakdown under consistent grinding pressure
• Porous wheel structure improves chip clearance and reduces heat buildup
• Type 1 straight-wheel profile fits standard surface grinder and cylindrical grinder spindles
• Rated to 4140 RPM maximum operating speed
• Compatible with a broad range of ferrous and non-ferrous materials including stainless, carbon steels, and cast iron

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. 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

Grinding wheels must be installed and dressed by a qualified machinist or maintenance technician following ANSI B11.9 and applicable shop safety standards. Before mounting, inspect the wheel for cracks or chips using a ring test. Power down and lock out the grinder before changing wheels, and verify that the machine spindle speed does not exceed the 4140 RPM maximum rating stamped or marked on the wheel. Use correct arbor flanges and blotters as specified by the grinder manufacturer to ensure uniform clamping pressure.