Tru-maxx 66253255805 Surface Grinding Wheel 7in 46G

Product Description

The TRU-MAXX 66253255805 is a Type 1 surface grinding wheel designed for precision stock removal on surface grinders in metalworking and tool-room applications. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent cut rates and predictable wear characteristics. The wheel measures 7 inches in diameter by 1/2 inch thick with a 1-1/4 inch arbor hole, runs at a maximum of 3600 RPM, and carries a 46-grit coarse grade with G hardness rating — a soft-range hardness well suited to harder ferrous workpieces where wheel breakdown needs to stay controlled.

This wheel is intended for horizontal-spindle surface grinders used in machine shops, tooling departments, and maintenance facilities. The coarse 46-grit specification makes it a productive choice for roughing passes and aggressive material removal rather than finish grinding. The vitrified bond structure, rated semi-friable with a grain structure code of 12 and a porous specification, promotes chip clearance and cooler cutting during extended passes on flat workpiece surfaces. The full specification designation is 23A46G12V31.

Key Features

• Aluminum oxide abrasive — durable and effective on hardened steels and ferrous alloys
• Vitrified bond with porous structure for improved chip clearance and cooler cuts
• 46 coarse grit for aggressive stock removal and roughing applications
• G hardness (soft range) promotes self-dressing action on harder workpiece materials
• Semi-friable grain breaks down predictably to expose fresh cutting edges
• Type 1 straight wheel profile fits standard horizontal-spindle surface grinder spindles

Compatibility

Designed as an OEM-style replacement or standard supply wheel for horizontal-spindle surface grinders accepting a 7 inch diameter, 1/2 inch wide, 1-1/4 inch arbor hole Type 1 wheel.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B11.9 and OSHA 29 CFR 1910.215 standards. Always perform a ring test before mounting and confirm the machine spindle speed does not exceed the 3600 RPM maximum rating of the wheel. Power down and lock out the grinder before changing wheels, and use proper flanges and a blotter on each side of the wheel. Allow the wheel to run at operating speed for at least one minute behind a guard before presenting it to the workpiece.