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The NORTON 66243529197 is a Type 11 flaring cup grinding wheel designed for tool grinding and surface conditioning applications. Built with white aluminum oxide abrasive and a vitrified bond, it delivers consistent, friable cutting action that continuously exposes fresh grain during use. At 3 inches in diameter with a 0.25-inch face width and a maximum operating speed of 7,640 RPM, this wheel suits bench grinder and pedestal grinder setups where controlled material removal and edge refinement are required. Hardness Code J indicates a medium-hard grade that releases grain under moderate pressure, making it appropriate for precision tool sharpening and reconditioning of high-speed steel and similar tooling.
This wheel is used in toolroom and maintenance shop environments where technicians sharpen cutting tools, dress lathe bits, recondition drill bits, or resurface tool faces. The Type 11 cup profile directs the abrasive face against the workpiece, providing clearance for the wheel body during sharpening operations. It is well suited to light industrial, machine shop, and skilled trade maintenance settings where consistent geometry and repeatable results are priorities.
Designed as a direct-mount replacement or standard toolroom grinding wheel for bench grinders and pedestal grinders accepting a 0.75-inch arbor hole and rated for Type 11 cup wheels at or below 7,640 RPM.
Mounting and dressing of grinding wheels should be performed by a qualified machinist or toolroom technician following ANSI B11.9 and applicable OSHA abrasive wheel standards. Always shut 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 per manufacturer guidelines. Never exceed the maximum RPM stamped on the wheel, and ensure the grinder spindle speed does not exceed 7,640 RPM before operation.
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