Norton 66252938880 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252938880 is a Type 1 surface grinding wheel designed for precision stock removal on ferrous metals in tool rooms, machine shops, and production grinding environments. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rate and form retention across a wide range of surface and cylindrical grinding applications. The wheel measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. It is rated at a maximum of 3600 RPM and carries an I hardness code, placing it in the medium-grade range for balanced aggression and wheel life. Licensed machinists, tool grinders, and CNC tool room technicians are the primary installers and operators.

This wheel is suited for grinding hard carbon steels, soft carbon steels, and tool steels in both job-shop and production settings. Its aluminum oxide abrasive composition makes it an appropriate choice for general-purpose surface grinding where consistent finish and controlled material removal are required. The vitrified bond structure is porous, which aids in chip clearance and coolant retention during wet or dry grinding passes. Typical applications include flat surface work on surface grinders and OD work on cylindrical grinders.

Key Features

• Aluminum oxide abrasive for reliable performance on carbon and tool steels
• Vitrified bond construction with porous structure for effective chip clearance
• Medium grade (I hardness code) balances material removal rate with wheel longevity
• 60 grit provides aggressive stock removal suitable for rough and semi-finish passes
• Type 1 straight wheel profile fits standard surface and cylindrical grinder spindles
• Series designation 32AA60-IVTR for specification-matched replacement sourcing

Compatibility

Compatible with CNC cutting tool machines, cylindrical grinders, and surface grinders equipped with a 1-1/4 inch arbor and rated to accept a 7 inch diameter Type 1 wheel at or above 3600 RPM.

Installation Notes

Installation and wheel changes 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 before mounting, and perform a ring test on vitrified wheels prior to use. Confirm the spindle speed does not exceed the 3600 RPM maximum marked on the wheel. Dress the wheel with an appropriate dressing tool after mounting to ensure true running and correct face profile before grinding.