Norton 66252803291 Type 11 Grinding Wheel 5 in 46 Grit

Product Description

The NORTON 66252803291 is a Type 11 flaring cup grinding wheel designed for precision tool grinding and surface conditioning in metalworking applications. Built with ceramic alumina abrasive and a vitrified bond, this wheel delivers consistent stock removal and long service life. The 5-inch diameter wheel runs at a maximum of 4585 RPM and features a 46-grit, medium-grade abrasive surface rated K hardness. The semi-friable ceramic alumina grain continuously fractures to expose fresh cutting edges, making it well suited for high-performance tool room and surface grinding tasks. Licensed HVAC, mechanical, and general trade shops use this wheel on bench grinders and pedestal grinders for tooling maintenance and sharpening work.

This wheel is primarily used in tool rooms, fabrication shops, and maintenance departments where precision grinding of cutting tools, jigs, and fixtures is required. The Type 11 flaring cup profile provides access to complex tool geometries that flat wheels cannot reach. At 1/4-inch face width and 1-1/4-inch arbor hole, it fits standard Type 11-compatible bench and pedestal grinder spindles commonly found in commercial and light industrial settings. Tradespeople and machinists who maintain their own tooling will find the 46-grit medium grade suitable for general material removal and rough shaping.

Key Features

• Ceramic alumina abrasive grain for consistent, aggressive stock removal
• Vitrified bond provides rigidity and precise form holding during grinding
• 46 grit, K hardness (medium grade) for efficient rough grinding and shaping
• Semi-friable grain structure continuously self-sharpens during use
• Type 11 flaring cup profile reaches complex tool angles and profiles
• Non-porous construction maintains wheel integrity under load

Compatibility

Designed as an OEM-style replacement or standard consumable for Type 11 flaring cup grinding wheel applications on bench and pedestal grinders equipped with a 1-1/4-inch arbor spindle.

Installation Notes

Grinding wheel mounting and replacement should be performed by qualified personnel familiar with ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before changing wheels. Inspect the wheel for cracks or chips before mounting and perform a ring test by tapping lightly with a non-metallic object. Never exceed the rated maximum RPM of 4585, and always use the appropriate flanges and blotter washers for a Type 11 cup wheel installation.