Norton 66253262204 Surface Grinding Wheel 46 Grit 12 in

Product Description

The NORTON 66253262204 is a Type 1 surface grinding wheel engineered for aggressive stock removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long service life on demanding materials including 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, and cast and ductile iron. At 12 inches in diameter with a 3/4-inch face width and a 3-inch arbor hole, it mounts directly to standard surface grinder spindles. The 46 grit coarse grade and I hardness code make it well-suited for high-removal roughing passes where surface finish is secondary to cutting efficiency.

This wheel is intended for professional use on CNC cutting tool machines, cylindrical grinders, and surface grinders in machine shops, tool rooms, and maintenance environments. The 5SG Type 1 series designation identifies it as a straight-wheel profile with no recess and no taper, keeping mounting and dressing straightforward. The porous, semi-friable ceramic grain structure supports cool cutting action, which is particularly valuable when working titanium and super alloys where heat buildup accelerates workpiece damage and tool wear. Licensed machinists and grinding specialists are the primary installers and operators of this wheel.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent, repeatable cut performance
• 46 grit coarse grade suited for high material-removal roughing operations
• I hardness (medium) balances wheel life against grain release on hard materials
• Semi-friable grain structure promotes cool cutting, reducing heat damage on heat-sensitive alloys
• Porous wheel structure aids coolant retention and chip clearance during wet grinding
• Type 1 straight-wheel profile with no recess and no taper for straightforward mounting

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Designed for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The 3-inch arbor hole and 12-inch diameter are compatible with standard production surface grinder spindle configurations accepting Type 1 straight wheels at this size.

Installation Notes

Wheel mounting and dressing must be performed by a qualified machinist or grinding specialist following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Before mounting, inspect the wheel for cracks or chips using the ring test; never mount a damaged wheel. Confirm that the machine spindle speed does not exceed the rated 2,070 RPM marked on the wheel, and use proper flanges and blotters sized to the arbor and wheel diameter. Power down and lock out the grinder before removing or installing any wheel.