Norton 66253007167 Surface Grinding Wheel 46 Grit 8 in

Product Description

The NORTON 66253007167 is a Type 1 surface grinding wheel built for precision stock removal on ferrous metals. It measures 8 inches in diameter, 0.75 inches thick, with a 1.25-inch arbor hole, and runs at a maximum rated speed of 3,105 RPM. The wheel is constructed from aluminum oxide abrasive bonded in a vitrified matrix, producing a porous, open structure that resists loading and maintains a free-cutting action throughout the grind. At 46 grit with an I hardness code (medium grade), this wheel delivers coarse material removal while retaining enough form stability for flat-surface work. It is suited for use by machinists, tool-and-die makers, and grinding technicians on production and maintenance grinding applications.

This wheel is rated for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It is engineered for material applications that include hard carbon steels, soft carbon steels, and tool steels. The 32A Series Type 1 designation indicates a straight wheel profile with no recess, making it a direct fit for standard surface grinder spindle setups in both job-shop and production environments. The blue wheel color is characteristic of the 32A aluminum oxide series.

Key Features

• 46 grit coarse grade for aggressive stock removal on steel
• Aluminum oxide abrasive with vitrified bond for durability and consistent cut rate
• Porous wheel structure minimizes heat buildup and reduces loading
• I hardness code (medium) balances wheel breakdown with workpiece finish
• Type 1 straight profile with no recess fits standard surface grinder spindles
• Maximum rated speed of 3,105 RPM

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for hard carbon steels, soft carbon steels, and tool steels per manufacturer specification. Series designation is 32A Type 1 with specification code 32AA46-IVTRP.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or grinding technician following ANSI B11.9 safety standards. Always inspect the wheel for cracks or chips before mounting, and perform a ring test per standard procedure. Power down and lock out the grinder before changing wheels. Never exceed the maximum rated spindle speed of 3,105 RPM, and always use the appropriate flanges and blotters for proper clamping.