Norton 66252830973 Type 11 Grinding Wheel 60 Grit

Product Description

The NORTON 66252830973 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 hard tool steels and HSS tooling. It measures 5 inches in diameter with a 1-3/4 inch overall thickness and a 1/4 inch face width. The J hardness code and medium grade make it well suited for controlled grinding where wheel breakdown and cut rate need to stay balanced. Maximum operating speed is 4,585 RPM. Weight is approximately 1.47 pounds.

This wheel is used in tool and cutter grinder setups found in machine shops, industrial maintenance environments, and grinding rooms. The Type 11 flaring cup profile is the standard choice for face grinding operations on cutting tools such as end mills, drills, and reamers. The 1-1/4 inch arbor hole fits common tool grinder spindles. Licensed grinders and industrial maintenance machinists are the primary installers and operators of this wheel type.

Key Features

• White aluminum oxide abrasive for cool, precise grinding on tool steels
• Vitrified bond provides rigidity and consistent wheel breakdown
• Type 11 flaring cup profile optimized for face grinding operations
• J hardness code with medium grade for balanced cut rate and wheel life
• Non-porous construction for uniform abrasive density across the face
• Friable grain structure promotes self-sharpening during use

Compatibility

Designed as an OEM-style replacement or direct-fit grinding wheel for Type 11 flaring cup positions on standard tool and cutter grinders accepting a 1-1/4 inch arbor hole and a 5 inch diameter wheel.

Installation Notes

Grinding wheel mounting and dressing should be performed by qualified personnel following ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the rated maximum RPM of 4,585. Power down and lock out the grinder before changing wheels. Use the correct flange and blotter assembly specified for Type 11 cup wheels.