Tru-maxx 66253269589 Type 11 Grinding Wheel 5 Inch

Product Description

The TRU-MAXX 66253269589 is a Type 11 flaring cup grinding wheel designed for tool and cutter grinding applications. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent stock removal on hardened steel tooling and similar ferrous materials. The wheel measures 5 inches in diameter with a 1-3/4 inch overall thickness and a 1/4 inch face width. Rated at a maximum of 4,585 RPM, it carries a J hardness code and 46 grit classification, making it appropriate for coarse, aggressive material removal. The friable abrasive structure allows the wheel to self-dress during use, helping maintain a sharp cutting action throughout the wheel's service life.

This grinding wheel is used primarily on bench grinders, pedestal grinders, and tool and cutter grinder machines in machine shops, maintenance facilities, and production environments. It is suited for resharpening milling cutters, end mills, reamers, and other rotary tooling. The 1-1/4 inch hole size and 3-3/4 inch hub diameter fit standard spindle arbors found on common tool grinding equipment. Machinists, tool grinders, and industrial maintenance technicians are the typical end users for this wheel type.

Key Features

• Type 11 flaring cup profile for tool and cutter grinding applications
• Aluminum oxide abrasive with vitrified bond for consistent, controlled stock removal
• 46 grit, J hardness code — coarse cut suitable for resharpening worn tooling
• Friable abrasive structure promotes self-dressing action during use
• Pink wheel color indicates standard aluminum oxide friable grain
• Non-porous construction for use on dry or light-fluid grinding setups

Compatibility

Designed as an OEM-style replacement or direct-use grinding wheel for tool and cutter grinders accepting a 5 inch diameter, 1-1/4 inch arbor hole, Type 11 cup wheel configuration.

Installation Notes

Wheel mounting and dressing must be performed by a qualified machinist or tool grinder operator following ANSI B7.1 safety standards for abrasive wheel use. Always inspect the wheel for cracks or chips before mounting — never use a damaged wheel. Power down and lock out the grinder before changing wheels, and confirm spindle speed does not exceed the 4,585 RPM maximum rating stamped on the wheel. Use proper flanges and a blotter gasket on each side of the wheel when mounting to the arbor.