Norton 66243530256 Grinding Wheel 4 in 60 Grit Type 11

Product Description

The NORTON 66243530256 is a Type 11 flaring cup grinding wheel designed for surface grinding and tool grinding applications. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent stock removal on ferrous metals and tool steels. The wheel measures 4 inches in diameter with a 1-1/4 inch hole, a 1-1/2 inch overall thickness, and a 1/4 inch face width. At 60 grit with a J hardness code and medium grade, it is suited for general-purpose material removal where a balance of cut rate and surface finish is required. Maximum operating speed is 5,730 RPM.

This wheel is used in bench grinder and pedestal grinder setups for sharpening tooling, deburring, and surface conditioning of metal workpieces. The Type 11 flaring cup profile provides clearance at the heel and concentrates contact at the face, making it a common choice for sharpening lathe tools, drill bits, and other shop cutting tools. Typical users include machinists, maintenance technicians, and tool-and-die professionals working with steel and similar ferrous materials.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent, free-cutting action on ferrous metals
• Type 11 flaring cup geometry provides heel clearance and face contact for precision tool grinding
• 60 grit, J hardness (medium grade) balances material removal rate with surface finish
• Non-porous construction maintains wheel integrity under standard dry grinding conditions
• Rated to 5,730 RPM maximum operating speed
• Specification designation 32A60-JVBE for cross-reference and ordering verification

Compatibility

Designed for use on bench grinders and pedestal grinders accepting a 4 inch diameter, 1-1/4 inch arbor hole Type 11 cup wheel. Verify that the grinder spindle speed does not exceed the 5,730 RPM maximum rated speed of this wheel before mounting.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician following ANSI B7.1 safety standards for abrasive wheels. Always power 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. Never exceed the maximum operating speed marked on the wheel, and always use the appropriate guard for the wheel type and grinder model.