Norton 66252938883 Surface Grinding Wheel 80 Grit 7 Inches

Product Description

The NORTON 66252938883 is a Type 1 surface grinding wheel designed for precision material removal on ferrous metals in industrial grinding applications. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent cut rates and long wheel life on hard carbon steels, soft carbon steels, and tool steels. The wheel measures 7 inches in diameter, 0.5 inches thick, and carries a 1.25-inch arbor hole. It is rated to a maximum of 3600 RPM and falls within the medium grade (Hardness Code I) classification. The specification designation is 32AA80-IVTR. Grinding wheel installation and dressing is typically performed by machinists, tool room technicians, and surface grinder operators.

This wheel is suited for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in production and tool room environments. Its aluminum oxide composition and vitrified bond make it well matched to hard carbon steels, soft carbon steels, and tool steels where controlled stock removal and surface finish consistency are required. The porous wheel structure promotes coolant flow and chip clearance during wet or dry grinding. The blue wheel body is characteristic of the Norton 32A Type 1 series.

Key Features

• Aluminum oxide abrasive for reliable performance on ferrous metals including hard carbon, soft carbon, and tool steels
• Vitrified bond construction provides rigidity and consistent abrasive exposure throughout wheel life
• Porous wheel structure supports coolant flow and chip evacuation during grinding
• Medium grade, Hardness Code I for balanced stock removal and wheel longevity
• No recess, no taper Type 1 straight wheel profile fits standard surface and cylindrical grinder spindles
• Maximum operating speed of 3600 RPM

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a Type 1 straight wheel with a 1.25-inch arbor hole and 7-inch diameter. Suitable for grinding hard carbon steels, soft carbon steels, and tool steels per the 32AA80-IVTR specification.

Installation Notes

Grinding wheel mounting must be performed by qualified personnel following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the rated maximum RPM of 3600. Power down and lock out the grinder before changing wheels, and ensure flanges and blotters are clean and properly seated. A speed check and dressing pass should be completed before returning the machine to production use.