Norton 66243530390 Type 11 Grinding Wheel 4 in 60 Grit

Product Description

The NORTON 66243530390 is a Type 11 flaring cup grinding wheel designed for precision tool grinding and surface conditioning applications. Built with white aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal on ferrous metals and tool steels. It measures 4 inches in diameter with a 1-1/2 inch overall thickness and a 1/4 inch face width, spinning safely up to a maximum of 5,730 RPM. The K hardness code and 60 grit rating place this wheel in the medium grade range, making it well suited for moderate material removal with good surface finish results.

This wheel is intended for use on bench grinders and pedestal grinders in machine shops, tool rooms, and maintenance facilities. It is commonly used to sharpen and recondition cutting tools including drill bits, chisels, lathe tooling, and milling cutters. The Type 11 flaring cup profile provides clearance for the tool rest and allows full face contact during sharpening operations. Professional machinists, toolmakers, and maintenance technicians are the primary installers and users of this wheel.

Key Features

• White aluminum oxide abrasive for consistent, free-cutting action on tool steels
• Vitrified bond offers rigid wheel structure and resistance to heat and oil contamination
• Type 11 flaring cup geometry optimized for tool and cutter grinding
• 60 grit medium grade balances material removal rate with surface finish quality
• K hardness rating provides durability appropriate for intermittent tool sharpening work
• Rated to 5,730 RPM maximum for safe use on standard bench and pedestal grinder spindles

Compatibility

Designed as an OEM-style replacement or standard consumable grinding wheel for bench grinders and pedestal grinders accepting a 1-1/4 inch hole and Type 11 cup wheel profile. Specification code 38A60-KVBE.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or maintenance technician following ANSI B7.1 safety standards. Always power down and lock out the grinder before mounting or removing the wheel. Inspect the wheel for cracks or chips before installation and perform a ring test by tapping the wheel lightly to confirm integrity before use. Never exceed the 5,730 RPM maximum speed rating stamped on the wheel.