Norton 66253246856 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253246856 is a Type 5 recessed surface grinding wheel engineered for aggressive stock removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, it measures 12 inches in diameter and 1.5 inches thick with a 5-inch arbor hole. The H hardness code and 46 coarse grit make it well suited for heavy-duty surface and cylindrical grinding applications where fast cutting action is the priority. Rated at a maximum of 2070 RPM, this wheel carries a full part number specification of 46H8V32A and belongs to the Norton 32A Type 5 series. Licensed grinding professionals and tool-room machinists are the primary installers.

This wheel is designed for use on surface grinders and cylindrical grinders in industrial and trade shop environments. Material compatibility covers a broad range of metals, including 400 Series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The one-side recessed geometry with a 7.5-inch recess diameter and 0.5-inch recess depth provides clearance for flange mounting on standard wheel spindles. Both production grinding and precision tool-room work fall within its intended application range.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut and long wheel life
• 46 coarse grit, H hardness rating for fast material removal on hard and soft metals
• Type 5 one-side recessed profile: 7.5-inch recess diameter, 0.5-inch recess depth
• Rated to 2070 RPM maximum operating speed
• Compatible with multiple metal types including stainless, carbon steels, tool steels, and cast irons
• Full specification code 46H8V32A for direct cross-reference and replacement sourcing

Compatibility

Designed for use with surface grinders and cylindrical grinders. Suitable for grinding 400 Series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing should be performed by qualified personnel following ANSI B11.9 and applicable OSHA standards for abrasive wheel machinery. Always power down and de-energize the grinder before mounting or removing wheels. Inspect the wheel for cracks or damage using the ring test before installation, and never exceed the maximum RPM rating stamped on the wheel or packaging. Flanges must be clean, flat, and the correct diameter for this wheel size before tightening.