Tru-maxx 66253255436 Surface Grinding Wheel 8in 46 Grit

Product Description

The TRU-MAXX 66253255436 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals and tool steels. Constructed from white aluminum oxide abrasive with a vitrified bond, this wheel delivers a semi-friable cutting action that continually exposes fresh grain during use. It measures 8 inches in diameter and 1/2 inch thick with a 1-1/4 inch arbor hole, and carries an H hardness rating with a grain structure of 12, placing it in the soft-to-medium range. Rated to 3600 RPM, it is suited for surface, cylindrical, and bench grinder applications where consistent material removal and workpiece finish quality are priorities.

This wheel is intended for use on surface grinders and compatible bench-mounted grinding machines in machine shops, tool rooms, and maintenance facilities. The 46-grit coarse grade makes it well suited for aggressive stock removal rather than fine finishing passes. It is a standard selection for machinists, tool and die makers, and maintenance technicians working with hardened steels and similar materials. The porous structure of the vitrified bond allows for effective coolant flow and heat dissipation during wet or dry grinding operations.

Key Features

• White aluminum oxide abrasive for semi-friable, self-sharpening cutting action
• Vitrified bond provides rigidity and allows porous coolant flow during operation
• 46-grit coarse grade suited for aggressive stock removal on ferrous metals
• H hardness rating (soft range) reduces heat buildup and glazing risk
• Type 1 straight-wheel profile with no recess for broad surface grinder compatibility
• Maximum operating speed of 3600 RPM

Compatibility

Designed as a standard Type 1 replacement grinding wheel for surface grinders and bench grinders accepting an 8 inch diameter, 1/2 inch thick wheel with a 1-1/4 inch arbor hole bore.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified machinists or maintenance technicians familiar with ANSI B11.9 safety standards for grinding machines. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the rated maximum RPM of 3600. Ensure the machine spindle speed is confirmed before operation.