Norton 66252916217 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252916217 is a Type 1 vitrified surface grinding wheel built for precision stock removal on ferrous metals. Measuring 7 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole, this wheel mounts to surface grinders, cylindrical grinders, and CNC cutting tool machines. The aluminum oxide abrasive is bonded in a vitrified matrix to the 48A60-HVP2 specification, producing a medium-grade, porous structure rated H hardness that holds its form under aggressive cuts while still breaking down to expose fresh abrasive. Maximum operating speed is 3,600 RPM. The ruby-colored wheel weighs 1.5 pounds and ships in single-unit packaging.

This wheel is suited to surface and cylindrical grinding applications in both production shop and tool-room environments. Rated material applications include hard carbon steels, soft carbon steels, and tool steels, making it a practical choice for sharpening HSS tooling, finishing flat surfaces on carbon steel workpieces, or form grinding on a cylindrical grinder. The open, porous structure helps clear swarf and reduce heat buildup during cut, which is especially important when grinding heat-sensitive tool steels. Licensed machinists, tool grinders, and industrial maintenance technicians are the typical end users.

Key Features

• Aluminum oxide abrasive with vitrified bond per 48A60-HVP2 specification
• Medium grade, porous structure promotes swarf clearance and reduces grinding heat
• H hardness code — firm enough for stock removal, open enough for consistent break-down
• Rated for hard carbon steels, soft carbon steels, and tool steels
• Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines
• 3,600 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a Type 1, 7-inch diameter wheel with a 1.25-inch arbor hole. Rated material applications include hard carbon steels, soft carbon steels, and tool steels.

Installation Notes

Grinding wheel mounting should be performed by a qualified machine operator or maintenance technician following ANSI B7.1 safety standards. Before mounting, power down and lock out the grinder completely. Conduct a ring test on the wheel to check for cracks before installation, and never exceed the 3,600 RPM maximum speed rating stamped on the wheel or its blotter. Use proper flange sizes and paper blotters on both sides of the wheel; do not over-tighten the arbor nut.