Norton 66253246946 Centerless Grinding Wheel 80 Grit

Product Description

The NORTON 66253246946 is a Type 1 centerless cylindrical grinding wheel designed for precision material removal on cylindrical workpieces. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal and surface finish control in centerless grinding operations. It measures 16 inches in diameter, 1 inch wide, with a 5-inch hole size, and carries an 80 grit, medium grade (M hardness) specification. Rated at a maximum of 2,030 RPM, it is suited for production grinding environments where controlled speed and abrasive consistency are required. The vitrified bond provides rigidity and porosity control, making it appropriate for wet or dry ferrous grinding applications.

This wheel is intended for use on centerless grinding machines in industrial and manufacturing settings. The 80 grit, medium grade combination suits applications requiring moderate stock removal with reasonable surface finish — typical in round stock, shaft, rod, and pin grinding. The 57A80M-V18 specification identifies this as a standard-production aluminum oxide wheel appropriate for grinding hardened and unhardened steel and similar ferrous materials. It is installed and dressed by trained grinding machine operators or maintenance machinists in production shop environments.

Key Features

• Type 1 flat wheel profile — standard for centerless and cylindrical OD grinding
• Aluminum oxide abrasive for consistent performance on ferrous metals
• Vitrified bond provides rigidity and resistance to coolant breakdown
• 80 grit medium grade delivers balanced stock removal and surface finish
• Non-porous construction for predictable wheel wear and dressing behavior
• Maximum 2,030 RPM rating for safe operation within centerless grinder speed ranges

Compatibility

Designed for use on centerless grinding machines accepting a 16-inch diameter, 1-inch wide, Type 1 wheel with a 5-inch arbor hole. Verify machine RPM rating meets or exceeds the 2,030 RPM maximum before mounting.

Installation Notes

Mounting and dressing of grinding wheels must be performed by qualified personnel following ANSI B11.24 and OSHA 29 CFR 1910.215 standards for abrasive wheel machinery. Always perform a ring test before mounting and ensure the machine spindle speed does not exceed the 2,030 RPM maximum stamped on the wheel. Guard the wheel properly and use appropriate personal protective equipment including face shield and hearing protection. Never force a wheel onto an arbor — use correct flange and blotter assemblies per the wheel manufacturer guidelines.