Norton 66253038893 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253038893 is a Type 1 straight surface grinding wheel engineered for precision stock removal on ferrous metals. Built around an aluminum oxide abrasive grain bonded with a vitrified bond, this wheel delivers consistent cut rate and predictable wear in high-demand grinding applications. It measures 8 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole, and carries a 46-grit coarse grade with a K hardness code. Rated to 3600 RPM, it is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines operated by qualified grinding technicians.

This wheel is best suited for grinding hard carbon steels, soft carbon steels, and tool steels where aggressive material removal is the priority. The coarse 46-grit aluminum oxide formulation cuts freely on both hardened and unhardened ferrous workpieces, making it a practical choice for tool room surface grinders and production grinding cells. The vitrified bond allows for dressing and truing, giving operators consistent geometry throughout the wheel life. The Series 32A Type 1 designation identifies it as a standard straight wheel with no recess geometry.

Key Features

• Aluminum oxide abrasive grain suited for hard and soft carbon steels and tool steels
• Vitrified bond supports routine dressing and truing for consistent wheel geometry
• 46-grit coarse grade for aggressive stock removal applications
• K hardness (medium) rating provides balanced wheel breakdown and cutting efficiency
• 3600 RPM maximum operating speed for surface and cylindrical grinder applications
• Porous structure promotes chip clearance and cooler cutting

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Material applications include hard carbon steels, soft carbon steels, and tool steels. Series designation is 32A Type 1, specification code 32AA46-KVTR.

Installation Notes

Grinding wheel mounting must be performed by a qualified operator following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before mounting or changing the wheel. Inspect the wheel for cracks or chips before installation and perform a ring test; do not mount a wheel that does not emit a clear tone. Never exceed the 3600 RPM maximum speed rating marked on the wheel.