Norton 66252942816 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252942816 is a Type 5 recessed surface grinding wheel engineered for precision stock removal on ferrous metals and high-performance alloys. Built with aluminum oxide abrasive in a vitrified bond, this wheel delivers consistent cut rates and predictable wear characteristics. It measures 7 inches in diameter and 1 inch thick, with a 1-1/4 inch arbor hole and a single-side recess of 3 inches diameter by 0.5 inches deep. The 60 grit, J hardness (medium grade) construction balances aggressive material removal with controlled surface finish. Rated to 3600 RPM maximum, it is suited for both cylindrical and surface grinder applications. The semi-friable grain structure allows for self-dressing behavior under load, maintaining wheel face integrity across extended use cycles.

This wheel is designed for grinding soft carbon steels, tool steels, and super alloys on cylindrical grinders and surface grinders. The medium-grade vitrified bond holds the aluminum oxide grain firmly while allowing fracture and exposure of fresh cutting edges as the wheel wears. The porous, white aluminum oxide construction runs cooler than denser bonds, reducing the risk of thermal damage to workpiece surfaces. It is appropriate for both job-shop and production grinding environments where dimensional control and surface quality are required on steel components.

Key Features

• Type 5 single-side recessed profile with 3 inch recess diameter and 0.5 inch recess depth for clearance on flanged workholding setups
• 60 grit, J hardness (medium grade) aluminum oxide abrasive for balanced stock removal on steel and super alloys
• Vitrified bond provides rigidity and dimensional stability under grinding pressure
• Semi-friable grain fractures controllably, exposing fresh cutting edges and extending wheel life
• Porous structure promotes cooler cutting and reduces thermal stress on workpiece surfaces
• 3600 RPM maximum operating speed; wheel color is white for easy identification of aluminum oxide specification

Compatibility

Designed for use with cylindrical grinders and surface grinders requiring a Type 5 recessed wheel with a 1-1/4 inch arbor hole. Suitable for grinding soft carbon steels, tool steels, and super alloys per the manufacturer specification 38A60-JVBE.

Installation Notes

Grinding wheel installation should be performed by a qualified machine operator or maintenance technician in accordance with ANSI B11.9 and the grinder manufacturer guidelines. Always perform a ring test before mounting and confirm the spindle speed does not exceed the 3600 RPM maximum marked on the wheel. Power down and lock out the grinder before mounting or removing the wheel. Never exceed the rated RPM, use damaged wheels, or force a wheel onto an arbor that requires excessive pressure to seat.