Norton 66253043649 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253043649 is a Type 1 surface grinding wheel built with ceramic abrasive and a vitrified bond. It measures 8 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole. The ceramic grain structure delivers consistent, cool cutting action on hard-to-grind ferrous metals and exotic alloys. Rated to 3,105 RPM, this wheel carries a coarse grade (46 grit) with a G hardness code, placing it in the soft-to-medium hardness range. It is designed for licensed machinists and toolroom professionals running surface grinders, cylindrical grinders, or CNC cutting tool machines.

This wheel is suited for precision surface grinding applications in metalworking shops, tool-and-die operations, and production environments. Intended material applications include 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The coarse, 46-grit specification removes stock efficiently before finishing passes. Its blue color and semi-friable ceramic grain make it identifiable and well matched to aggressive stock removal on difficult materials.

Key Features

• Ceramic abrasive grain for cool, free-cutting action on hard metals and super alloys
• Vitrified bond provides rigidity, porosity, and consistent wheel breakdown during use
• 46 grit coarse grade for efficient stock removal
• G hardness code (soft range) promotes self-dressing behavior on hard workpiece materials
• Type 1 straight wheel profile with no recess, compatible with standard surface and cylindrical grinder spindles
• Maximum operating speed rated at 3,105 RPM

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 workpieces. Series designation 5SG Type 1.

Installation Notes

Installation and mounting of grinding wheels should be performed by a qualified machinist or toolroom technician. Always power down and lock out the machine before mounting or changing wheels. Inspect the wheel for cracks or chips before mounting using the ring test; do not use a damaged wheel. Verify that the machine spindle speed does not exceed the wheel's maximum rated RPM of 3,105, and follow ANSI B7.1 safety standards for abrasive wheel use.