Norton 66253038891 Surface Grinding Wheel 8in 80 Grit

Product Description

The NORTON 66253038891 is a Type 1 surface grinding wheel engineered for precision stock removal on ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and thermal stability under sustained grinding loads. It measures 8 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. Rated at a maximum of 3600 RPM, the K hardness code places it in the medium grade range, balancing wheel life against material aggressiveness. It carries the 32AA80-KVTR specification designation. Licensed HVAC, machining, and toolroom professionals install and operate this wheel in production and maintenance grinding applications.

This wheel is suited for surface grinding, cylindrical grinding, and CNC cutting tool machine applications. It performs on hard carbon steels, soft carbon steels, and tool steels, making it a practical choice for toolroom reconditioning, fixture grinding, and general precision metalworking. The porous structure of the wheel aids coolant retention and chip clearance during wet or dry grinding operations. Its blue wheel color is consistent with the 32A series product family.

Key Features

• Aluminum oxide abrasive for reliable performance on carbon and tool steels
• Vitrified bond provides rigidity and thermal resistance during grinding
• Medium grade (K hardness) balances wheel life and cut rate
• Porous structure supports chip clearance and coolant flow
• Type 1 flat wheel profile with no recess for straightforward mounting
• Maximum operating speed of 3600 RPM

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding hard carbon steels, soft carbon steels, and tool steels.

Installation Notes

Grinding wheel mounting and operation should be performed by qualified personnel following ANSI B7.1 safety standards. Always ring-test the wheel for cracks before mounting and ensure the machine spindle speed does not exceed the 3600 RPM maximum rating stamped on the wheel. Power down and lock out the machine before changing wheels. Use the correct flanges and blotters for the arbor size and never force the wheel onto the spindle.