Norton 66252940196 Surface Grinding Wheel 60 Grit 7in

Product Description

The NORTON 66252940196 is a Type 1 surface grinding wheel engineered for aggressive material removal on hard ferrous metals and specialty alloys. Built with ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long wheel life on demanding applications. It measures 7 inches in diameter, 0.5 inches thick, and carries a 1.25-inch arbor hole to fit standard surface and cylindrical grinder spindles. The 60 grit, I hardness (medium grade) combination suits roughing and semi-finishing passes where stock removal matters most. Maximum operating speed is 3,600 RPM. The porous, semi-friable ceramic structure promotes cool cutting, reducing heat buildup on heat-sensitive materials like titanium and stainless steel. This wheel is installed and dressed by machinists and tool-room grinders in production and maintenance environments.

This wheel is rated for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is suited for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The 5SG Type 1 series designation confirms compatibility with straight-wheel spindle configurations common in tool-room and production grinding cells. Applications range from flat-surface finishing of hardened tool steel to light clean-up passes on cast iron components.

Key Features

• Ceramic abrasive grain with vitrified bond for high material removal rates and consistent cut
• 60 grit, I hardness (medium grade) suited for roughing and semi-finishing passes
• Porous, semi-friable structure promotes cool cutting and reduces thermal damage to workpiece
• Type 1 straight-wheel profile fits standard surface and cylindrical grinder arbors
• 3,600 RPM maximum operating speed rated for safe use on appropriate equipment
• Rated for stainless steel, tool steels, titanium, super alloys, and various cast irons

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated material applications include 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The 1.25-inch arbor hole fits standard straight-wheel spindle configurations.

Installation Notes

Grinding wheels must be installed by qualified personnel 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. Power down and lock out the grinder before changing wheels, and confirm that the machine spindle speed does not exceed the 3,600 RPM rating marked on the wheel. Always dress the wheel after mounting and before the first pass to true the running surface.