Norton 66243530067 Type 12 Grinding Wheel 4 in 60 Grit

Product Description

The NORTON 66243530067 is a Type 12 vitrified aluminum oxide grinding wheel designed for precision tool grinding and sharpening applications. Measuring 4 inches in diameter with a 3/16-inch face width and 1/2-inch overall thickness, this wheel fits standard tool and cutter grinders. The 60-grit, K-hardness (medium) bond provides consistent stock removal on a wide range of tooling. The vitrified bond construction delivers rigidity and free-cutting action, making it a reliable choice for licensed machinists and tool room technicians maintaining cutting tools in production or maintenance shop environments.

This wheel is suited for tool and cutter grinding operations in machine shops, maintenance facilities, and manufacturing environments. The medium grit and hardness rating make it appropriate for general-purpose regrinding of high-speed steel and similar tool materials. The 3/4-inch arbor hole provides a secure mount on compatible tool grinder spindles. With a maximum rated speed of 6,210 RPM, it is sized for bench and pedestal tool grinders operating within that speed range.

Key Features

• Type 12 wheel profile designed for tool and cutter grinding
• 60 grit, K hardness (medium grade) aluminum oxide abrasive
• Vitrified bond for rigidity and consistent cutting action
• 4-inch diameter with 3/4-inch arbor hole and 3/16-inch face width
• Maximum operating speed of 6,210 RPM
• Specification grade 32A60-KVBE for traceable quality reference

Compatibility

Designed as an OEM-style replacement or standard-stock grinding wheel for tool and cutter grinders accepting a Type 12 wheel with a 4-inch diameter and 3/4-inch arbor hole operating at or below 6,210 RPM.

Installation Notes

Wheel mounting should be performed by a qualified machinist or tool room technician following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the grinder before changing wheels. Never exceed the maximum rated RPM marked on the wheel.