Norton 66260273607 Cbn Surface Grinding Wheel 120 Grit

Product Description

The NORTON 66260273607 is a Type 1A1 cubic boron nitride (CBN) surface grinding wheel designed for precision material removal on hard and difficult-to-grind workpiece materials. Built with a resinoid bond and a medium hardness rating (code T), this wheel delivers consistent stock removal during roughing and cut-off operations. At 120 grit with a fine grade, it produces controlled surface finishes while maintaining cut rate. The superabrasive CBN layer is 1/4 inch deep with a 75 concentration rating, providing a long-lasting abrasive section suited for high-production grinding environments. Machinists and tool-and-die professionals working with hardened steels and superalloys rely on CBN wheels like this one for extended wheel life over conventional abrasives.

This wheel is suited for surface grinding applications in machine shops, tool rooms, and manufacturing operations where conventional aluminum oxide or silicon carbide wheels fall short. The Type 1A1 straight-wheel profile fits standard surface grinder spindle setups. At 6 inches in diameter with a 1-1/4 inch arbor hole and 1/2 inch thickness, it mounts directly to compatible surface grinder spindles without adapter modifications in most configurations. The resinoid bond provides good shock resistance, making it appropriate for interrupted-cut surface grinding as well as continuous-pass operations.

Key Features

• CBN (cubic boron nitride) superabrasive for grinding hardened steels and superalloys
• Type 1A1 straight wheel profile for standard surface grinder compatibility
• 120 grit, fine grade for controlled stock removal with smooth surface results
• Resinoid bond with medium hardness (T) for balanced cut rate and wheel life
• 1/4 inch superabrasive depth and 75 concentration for extended productive life
• No recess, no taper — straightforward mounting on compatible arbors

Compatibility

Designed as an OEM-style replacement or direct-fit CBN grinding wheel for surface grinders accepting a 6 inch diameter, 1-1/4 inch arbor hole, Type 1A1 straight wheel. No specific machine model compatibility was provided in the product data.

Installation Notes

CBN grinding wheels must be mounted and dressed by a qualified machinist or grinding specialist following the machine manufacturer's spindle speed and mounting requirements. 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 per ANSI B7.1 standards. Never exceed the maximum operating speed marked on the wheel.