Norton 66253214987 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253214987 is a Type 1 surface grinding wheel engineered for precision stock removal on ferrous metals and high-performance alloys. Built around an aluminum oxide abrasive grain bonded in a vitrified matrix, it measures 12 inches in diameter, 1-1/2 inches thick, with a 5-inch arbor hole. The coarse 46 grit rating and I hardness code make this wheel well suited for aggressive material removal while maintaining controlled wheel breakdown. At a maximum operating speed of 2070 RPM, it fits standard surface grinder and cylindrical grinder spindle configurations. This is a professional-grade consumable installed and dressed by qualified grinding machine operators.

This wheel is rated for use on soft carbon steels, tool steels, and super alloys. It is designed for use on CNC cutting tool machines, cylindrical grinders, and surface grinders. The semi-friable aluminum oxide grain self-sharpens during cuts, keeping the wheel face open and reducing heat buildup at the workpiece. Series designation 38A Type 1 with specification code 38A46-IVBE confirms the abrasive formulation, bond strength, and structure for shops sourcing to a defined grinding spec.

Key Features

• Type 1 straight-wheel profile with no recess and no taper for flat surface grinding applications
• 46 grit coarse grade aluminum oxide for aggressive stock removal on steel and alloy workpieces
• Vitrified bond provides rigid grain support and consistent cut geometry throughout wheel life
• Semi-friable grain structure promotes self-sharpening action and reduces glazing
• White wheel color aids visual inspection for loading, glazing, or uneven wear
• Non-porous construction rated to 2070 RPM maximum operating speed

Compatibility

Rated for use with CNC cutting tool machines, cylindrical grinders, and surface grinders requiring a Type 1 wheel with a 5-inch arbor hole and a 12-inch diameter. Material application includes soft carbon steels, tool steels, and super alloys per supplier specification.

Installation Notes

This wheel must be installed by a qualified machine operator or toolroom technician following ANSI B7.1 safe use and handling standards for abrasive wheels. Inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the 2070 RPM maximum speed marked on the wheel or packaging. Power down and lock out the grinder completely before changing wheels. Always dress the wheel with an appropriate diamond dresser before the first grinding pass to true the face and open the grain structure.