Norton 66243530417 Type 11 Grinding Wheel 4 in 60 Grit

Product Description

The NORTON 66243530417 is a Type 11 flaring cup grinding wheel designed for tool and cutter grinding applications. Built with ceramic alumina abrasive and a vitrified bond, this wheel delivers consistent stock removal and long wheel life on ferrous metals and tool steels. It measures 4 inches in diameter with a 1.5-inch overall thickness and a 0.25-inch face width. The 60-grit, L-hardness (medium) specification makes it well-suited for sharpening and reconditioning cutting tools where controlled material removal and surface finish consistency are both priorities. Maximum operating speed is rated at 5,730 RPM. Licensed tradespeople and tool-room machinists are the primary installers.

This wheel is used in tool and cutter grinder applications, typically in machine shops, maintenance facilities, and industrial service environments. The Type 11 profile allows contact along the face and rim, making it effective for relieving and sharpening end mills, drills, reamers, and similar cutting tools. The 5SG60-LVS specification designates the Seeded Gel ceramic grain, 60 grit, L hardness, vitrified bond, and structure grade, which together deliver a semi-friable cutting action that resists loading on harder tool steels.

Key Features

• Type 11 flaring cup profile for tool and cutter grinding contact
• Ceramic alumina (Seeded Gel) abrasive grain for extended wheel life
• Vitrified bond provides rigid, precise cutting action
• 60 grit, L hardness (medium grade) for balanced stock removal and finish
• Semi-friable grain continuously exposes fresh cutting edges
• Non-porous structure minimizes loading on dense tool steels

Compatibility

Designed as an OEM-style replacement or standard-supply grinding wheel for Type 11 flaring cup wheel spindles in bench-mounted and pedestal-style tool and cutter grinders.

Installation Notes

Wheel mounting should be performed by a qualified operator following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always perform a ring test before mounting and confirm the machine spindle speed does not exceed the 5,730 RPM maximum rating marked on the wheel. Inspect the wheel for cracks or chips before each use and never exceed the rated maximum RPM. Stand clear of the wheel plane during startup and allow the wheel to run at operating speed for at least one minute before applying workpiece contact.