Norton 66252838495 Type 11 Grinding Wheel 46 Grit

Product Description

The NORTON 66252838495 is a Type 11 flaring cup grinding wheel designed for precision tool grinding and surface grinding applications. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal on ferrous metals and tool steels. It measures 6 inches in diameter with a 3/8-inch face width and accepts a 1-1/4-inch arbor hole. Rated at 46 grit with a K hardness code and medium grade, it strikes a balance between cut rate and surface finish. Maximum operating speed is 3820 RPM. The wheel is white in color and non-porous, with a vitrified bond that resists heat buildup during extended grinding cycles.

This wheel is suited for offhand tool grinding, cutter grinding, and bench or pedestal grinder use in tool rooms, machine shops, and maintenance environments. The Type 11 flaring cup profile is commonly used on tool and cutter grinders for sharpening milling cutters, reamers, and similar tooling. The 4-1/2-inch hub diameter and 1-1/4-inch bore fit standard tool grinder spindles. Aluminum oxide construction makes it appropriate for general-purpose grinding of high-speed steel and carbon steel tooling. Installation and use is typically performed by machinists, tool room technicians, or skilled maintenance trades.

Key Features

• Type 11 flaring cup profile for tool and cutter grinder applications
• Aluminum oxide abrasive with vitrified bond for consistent cut and thermal resistance
• 46 grit, K hardness, medium grade for balanced stock removal and finish
• 3820 RPM maximum operating speed
• Non-porous construction reduces loading on ferrous tooling materials
• Friable grain structure promotes self-dressing action during use

Compatibility

Designed as an OEM-style replacement or direct-fit grinding wheel for tool and cutter grinders accepting a 6-inch Type 11 cup wheel with a 1-1/4-inch arbor bore.

Installation Notes

This wheel should be mounted and dressed by a qualified machinist or tool room technician following ANSI B7.1 safe mounting practices. Always inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the rated maximum RPM of 3820. Power down and lock out the grinder before changing wheels, and use proper flanges and blotters as required by the machine manufacturer. Eye protection and a wheel guard must be in place before operating.