Norton 66243530374 Type 11 Grinding Wheel 4 in 46 Grit

Product Description

The NORTON 66243530374 is a Type 11 vitrified grinding wheel designed for tool grinding and precision offhand grinding applications. Built with white aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal with a friable grain structure that continuously self-sharpens during use. At 4 inches in diameter with a 1-1/2 inch overall thickness and a 1/4 inch face width, it fits compact bench grinders and pedestal grinder spindles. The J hardness code and 46 grit coarse-medium cutting action make it well suited for aggressive material removal on tool steels and high-speed steel tooling.

This wheel is used in machine shops, tool rooms, and maintenance facilities for resharpening cutting tools, drill bits, lathe tools, and similar high-speed steel implements. The non-porous, white aluminum oxide construction resists loading and heat buildup, making it a reliable choice for controlled tool reconditioning work. Licensed machinists and tool-and-die professionals are the primary installers and operators of this wheel type. The 1-1/4 inch bore fits standard bench and pedestal grinder arbors common in trade and industrial shop environments.

Key Features

• White aluminum oxide abrasive provides friable, self-sharpening cutting action
• Vitrified bond offers dimensional stability and consistent wheel geometry
• Type 11 cup wheel profile suits tool grinding and offhand sharpening
• 46 grit medium-coarse stock removal for resharpening high-speed steel tools
• Non-porous structure resists clogging and heat transfer to workpiece
• Rated to 5,730 RPM maximum for safe operation on compatible bench grinders

Compatibility

Designed as an OEM-style replacement or standard consumable for bench grinders and pedestal grinders accepting a Type 11 cup wheel with a 1-1/4 inch arbor bore and a maximum speed rating at or below 5,730 RPM.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B7.1 safety standards. Before mounting, power down and lock out the grinder per applicable OSHA lockout-tagout procedures. Always ring-test the wheel for cracks before installation and confirm the grinder spindle speed does not exceed the 5,730 RPM maximum rating stamped on the wheel. Never exceed the rated maximum RPM, and always use the appropriate wheel guards and eye protection during operation.