Norton 66253160283 Surface Grinding Wheel 10in 46 Grit

Product Description

The NORTON 66253160283 is a Type 1 straight surface grinding wheel built for stock removal on ferrous and non-ferrous metals in precision grinding operations. It measures 10 inches in diameter and 3/4 inches thick, with a 3-inch arbor hole. The wheel is constructed from aluminum oxide abrasive bonded in a vitrified matrix, rated at a coarse 46 grit with G hardness. At a maximum operating speed of 2,485 RPM, it delivers consistent material removal on surface grinders, cylindrical grinders, and CNC cutting tool machines. Weighing 4.57 pounds, it fits standard spindle configurations common in machine shops and tool rooms. Licensed tradespeople and skilled machinists are the typical end users.

This wheel is suited for medium-to-heavy stock removal on a range of materials including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Its porous structure promotes coolant flow and chip clearance, making it practical for both wet and dry surface grinding setups. The 32A series designation identifies the specific aluminum oxide grain formulation, which is well-established in toolroom and production grinding environments. It performs in both horizontal and vertical spindle surface grinder configurations.

Key Features

• Aluminum oxide abrasive with vitrified bond for durability and consistent cut rate
• 46 grit coarse grade for efficient stock removal
• G hardness rating — soft wheel hardness releases dull grains and resists loading on hard workpieces
• Porous wheel structure supports coolant penetration and chip evacuation
• Maximum operating speed of 2,485 RPM rated for safe use on standard surface and cylindrical grinders
• No recess, no taper — standard Type 1 straight wheel geometry

Compatibility

Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for use on 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Arbor hole size of 3 inches fits standard machine spindles for 10-inch diameter wheels.

Installation Notes

Grinding wheel installation must be performed by a qualified machinist or toolroom technician following ANSI B11.9 and OSHA 1910.215 standards for abrasive wheel machinery. Before mounting, power down and lock out the grinder completely. Always ring-test the wheel for cracks before mounting and use the correct flange and blotter sizes for the arbor diameter. Never exceed the maximum operating speed of 2,485 RPM stamped on the wheel.