Norton 66243503342 Type 11 Grinding Wheel 4in 46 Grit

Product Description

The NORTON 66243503342 is a Type 11 flaring cup grinding wheel engineered for tool and cutter grinding applications. It uses a Ceramic Alumina abrasive bonded with a vitrified bond system, delivering consistent stock removal and long wheel life under sustained use. At 46 grit with a K hardness code and medium wheel hardness rating, it cuts aggressively while maintaining enough form stability for accurate tool work. The wheel is rated to a maximum of 5,730 RPM and is designed for use by tool grinders, machinists, and maintenance technicians working on cutting tools, carbide, and high-speed steel.

This wheel is suited for bench and pedestal grinder setups in tool rooms, machine shops, and maintenance facilities. Its Type 11 flaring cup profile directs the abrasive face outward, making it well-suited for clearance grinding, resharpening end mills, drills, and similar rotary cutting tools. The blue Ceramic Alumina grain construction under the 5SG46-KVS specification is semi-friable, meaning it fractures under heat to expose fresh cutting edges, which extends wheel life and reduces heat buildup on the workpiece.

Key Features

• Ceramic Alumina abrasive grain (5SG46-KVS specification) for consistent, cool cutting
• Vitrified bond provides rigidity and open structure for efficient material removal
• Type 11 flaring cup profile optimized for tool and cutter grinding
• Semi-friable grain self-dresses under load, extending usable wheel life
• Non-porous construction maintains wheel integrity under wet or dry grinding conditions
• 5,730 RPM maximum speed rating for safe operation on standard tool grinders

Compatibility

Designed as an OEM-style replacement or direct-fit grinding wheel for Type 11 flaring cup applications on compatible bench and pedestal tool grinders accepting a 1-1/4 inch arbor hole.

Installation Notes

Installation should be performed by a qualified machinist or tool grinder technician. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before installation using the ring test, and never exceed the maximum RPM stamped on the wheel or listed in its specifications. Guard clearances and flanges must conform to ANSI B7.1 safety requirements for abrasive wheel machinery.