Norton 66253306788 Surface Grinding Wheel 46 Grit 14 in

Product Description

The NORTON 66253306788 is a Type 1 straight surface grinding wheel engineered for precision stock removal on ferrous materials. Built on an aluminum oxide abrasive with a vitrified bond, it delivers consistent coarse-grade cutting action suited for flat surface grinding applications. The wheel measures 14 inches in diameter, 1 inch thick, with a 5-inch arbor hole, and is rated at a maximum of 1800 RPM. At H hardness, the wheel is classified as soft on the hardness scale, allowing the abrasive to release worn grains efficiently and maintain a sharp cutting face during extended use. Licensed trades and production grinding shops rely on this wheel for repeatable material removal on steel workpieces.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in production and toolroom environments. It is well suited for grinding hard carbon steels, soft carbon steels, and tool steels. The 46-grit, coarse-grade specification makes it appropriate for aggressive stock removal passes where surface finish is secondary to material removal rate. The vitrified bond provides rigidity and porosity, supporting free cutting action and efficient coolant penetration in wet grinding setups.

Key Features

• Type 1 straight wheel profile with no recess — compatible with standard surface and cylindrical grinder spindles
• 46 grit coarse grade for high material removal rates on steel workpieces
• H hardness (soft rating) promotes self-dressing action to keep the wheel cutting freely
• Vitrified bond with porous structure supports both wet and dry grinding and efficient coolant flow
• Aluminum oxide abrasive suited for hard carbon steels, soft carbon steels, and tool steels
• Series 32A specification — 32AA46-HVTRP designation confirms abrasive type, grit, hardness, and bond

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Recommended material applications include hard carbon steels, soft carbon steels, and tool steels as stated by the manufacturer.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 1910.215 guidelines for abrasive wheel machinery. Before mounting, inspect the wheel for cracks using the ring test and verify that the machine spindle speed does not exceed the 1800 RPM maximum stamped on the wheel. Always install proper wheel flanges and blotters, and confirm the arbor hole fits the spindle without forcing. Never exceed the rated maximum RPM under any operating condition.