Norton 66252836982 Grinding Wheel 6in 60 Grit Type 12

Product Description

The NORTON 66252836982 is a Type 12 tool room grinding wheel designed for precision grinding operations on tool and cutter grinders. Built with white aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent material removal at a medium grade. It measures 6 inches in diameter with a 1/2-inch overall thickness and a 3/8-inch face width, fitting a 1-1/4-inch arbor hole. The 60-grit, K-hardness designation places it firmly in the medium cutting range, suited for controlled stock removal on high-speed steel and similar toolroom workpieces. Maximum operating speed is 4,140 RPM. Friable grain construction allows the wheel to fracture and self-sharpen during use, maintaining a consistent cut.

This wheel is intended for use on bench-type tool and cutter grinders in toolroom, maintenance, and production grinding environments. Its Type 12 form factor makes it appropriate for applications requiring a recessed face geometry. Typical users include toolroom machinists, maintenance technicians, and grinding specialists performing resharpening, shaping, or finishing of cutting tools, drill bits, and similar metal workpieces. The white aluminum oxide composition makes it well-suited for heat-sensitive materials where minimizing workpiece temperature rise is important.

Key Features

• White aluminum oxide abrasive with friable grain for consistent self-sharpening action
• Vitrified bond provides rigidity and open structure for efficient chip clearance
• Type 12 wheel geometry with 3/8-inch face width for tool and cutter grinder applications
• 60 grit, K hardness (medium grade) balances stock removal rate with surface finish
• Rated to 4,140 RPM maximum operating speed
• Non-porous construction for predictable, uniform grinding performance

Compatibility

Designed as an OEM-style replacement or direct fitment for tool and cutter grinders accepting a Type 12 wheel with a 6-inch diameter, 1/2-inch thickness, and 1-1/4-inch arbor hole bore.

Installation Notes

Grinding wheels must be installed and dressed by a qualified technician following ANSI B11.9 and applicable shop safety standards. Always perform a ring test before mounting to check for cracks, and never exceed the rated maximum RPM of 4,140. Power down and lock out the grinder before mounting or removing the wheel. Use appropriate flanges and blotters as required by the machine manufacturer.