Norton 66253262488 Surface Grinding Wheel 46 Grit 12 in

Product Description

The NORTON 66253262488 is a Type 1 surface grinding wheel engineered for aggressive stock removal on hard ferrous metals and exotic alloys. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and thermal stability across extended grinding cycles. At 12 inches in diameter and 1 inch thick with a 3-inch arbor hole, it fits standard surface and cylindrical grinder spindles. The 46-grit coarse grade and H hardness code (soft wheel hardness rating) allow the grain to fracture and self-sharpen, reducing glazing when cutting tough materials. Rated at a maximum of 2,070 RPM, it is appropriate for production surface grinding environments. Licensed machinists, tool-and-die makers, and CNC grinding technicians are the primary installers and users.

This wheel is suited for surface grinders, cylindrical grinders, and CNC cutting tool machines in both job shop and production settings. Material applications include 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The porous, semi-friable ceramic grain structure helps manage heat buildup when grinding heat-sensitive alloys such as titanium and stainless. Its blue wheel color is consistent with the NORTON 5SG series designation (series specification: 5SG46-HVSP), making it straightforward to identify and reorder.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent cut rate and long wheel life
• 46-grit coarse grade for high stock removal on hard and exotic metals
• Porous, semi-friable grain structure reduces heat buildup during grinding
• H hardness code (soft rating) promotes self-sharpening and minimizes glazing
• Type 1 flat wheel profile fits standard surface grinder and cylindrical grinder spindles
• Series specification 5SG46-HVSP for precise reorder identification

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Mounting and dressing of grinding wheels should be performed by a qualified machinist or grinding technician following ANSI B11.9 and OSHA 29 CFR 1910.215 guidelines. 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 speed of 2,070 RPM; confirm the machine spindle speed before operation and dress the wheel with an appropriate diamond dresser before first use.