Norton 66253149859 Surface Grinding Wheel 10 in 60 Grit

Product Description

The NORTON 66253149859 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on metalworking equipment. Built on a vitrified bond with aluminum oxide abrasive, this wheel delivers consistent cutting action and thermal stability across extended grinding sessions. It measures 10 inches in diameter, 1/2 inch thick, with a 3-inch arbor hole, and is rated for a maximum of 2485 RPM. The semi-friable aluminum oxide grain self-sharpens during use, making it well suited for maintaining form on harder work materials without loading quickly. This wheel is installed and used by machinists and tool-and-die technicians in production and job-shop environments.

This grinding wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its medium grade and K hardness rating make it appropriate for soft carbon steels, tool steels, and super alloys where a balance of wheel life and cut rate is required. The white aluminum oxide composition minimizes heat transfer to the workpiece, which is especially important when grinding heat-sensitive tool steels or finishing ground surfaces to tight tolerances.

Key Features

• Aluminum oxide abrasive with semi-friable grain for consistent self-sharpening action
• Vitrified bond provides rigidity and resistance to oils, water, and common grinding coolants
• Type 1 straight wheel profile with no recess — straightforward mounting on standard arbors
• 60 grit, K hardness (medium grade) balances material removal rate with surface finish quality
• White wheel color indicates pure aluminum oxide chemistry suited for low-heat grinding applications
• Series 38A Type 1 specification (38A60-KVBE) for traceable quality reference

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Material applications include soft carbon steels, tool steels, and super alloys. Designed as an OEM-style replacement or standard stock wheel for any machine accepting a Type 1 straight wheel with a 3-inch arbor hole and 10-inch diameter.

Installation Notes

Grinding wheel installation must be performed by a qualified machinist or toolroom technician following ANSI B7.1 safety requirements. Always ring-test the wheel for cracks before mounting and never exceed the 2485 RPM maximum speed rating. Power down and lock out the grinder before changing wheels, and use the correct flange size and blotters as required by the machine manufacturer. Allow the wheel to run at operating speed for at least one minute behind a guard before presenting work.