Norton 66252830971 Type 11 Grinding Wheel 5 in 46 Grit

Product Description

The NORTON 66252830971 is a Type 11 flaring cup grinding wheel engineered for tool grinding and surface conditioning applications. Built with white aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal on ferrous tool steels and similar hard materials. At 46 grit with a K hardness code, it falls in the medium-coarse range, making it well-suited for reshaping cutting edges and blending surfaces where moderate material removal is the priority. Rated to a maximum of 4,585 RPM, this 5-inch diameter wheel is designed for use on bench grinders and pedestal grinders operated by machinists and tool-and-die professionals.

This wheel is a practical choice for tool rooms, maintenance shops, and industrial grinding stations. Its Type 11 cup profile allows grinding on the face, which is typical for sharpening drill bits, milling cutters, reamers, and similar tooling. The vitrified bond structure ensures dimensional stability under heat generated during dry grinding cycles. The 46-grit, medium-grade formulation balances cut rate and surface finish for general-purpose tool reconditioning work.

Key Features

• Type 11 flaring cup geometry for face grinding applications
• White aluminum oxide abrasive with vitrified bond for consistent cut
• 46 grit, K hardness for medium-coarse stock removal on tool steels
• Rated to 4,585 RPM maximum operating speed
• Non-porous structure maintains wheel integrity during grinding
• Friable grain construction promotes self-sharpening action

Compatibility

Designed as an OEM-style replacement or direct-use grinding wheel for bench grinders and pedestal grinders accepting a 5-inch diameter, 1-1/4-inch bore Type 11 cup wheel.

Installation Notes

Install and dress grinding wheels only after confirming the grinder is rated at or above the wheel's maximum RPM and fully powered down and locked out per OSHA and ANSI B11.9 guidelines. Inspect the wheel for cracks or chips before mounting and perform a ring test by tapping lightly with a non-metallic implement. Always use the proper flanges and blotters supplied with the wheel and tighten the spindle nut to snug only. Allow the wheel to run at operating speed for at least one minute behind the guard before beginning work.