Tru-maxx 66253255463 Surface Grinding Wheel 8in 46 Grit

Product Description

The TRU-MAXX 66253255463 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals and general shop materials. Built with an aluminum oxide abrasive grain and a vitrified bond, this wheel delivers consistent cutting action and good form retention under load. It measures 8 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole, and carries a 46-grit coarse grade with K hardness for medium wheel hardness overall. Maximum operating speed is 3600 RPM. Machinists and tool-and-die technicians install this wheel on standard surface grinders for flat-surface work requiring aggressive material removal.

This wheel fits surface grinders configured for 8-inch diameter, 1/2-inch face wheels with a 1-1/4 inch bore. The coarse 46-grit aluminum oxide construction suits roughing passes on carbon steel, alloy steel, and similar ferrous workpieces. The vitrified bond provides an open, rigid structure that holds shape well during dry or wet surface grinding operations. It is suited for production and maintenance grinding environments where repeatable flat surfaces are required and wheel dressing is performed regularly to maintain cutting efficiency.

Key Features

• Type 1 straight wheel profile for use on horizontal-spindle surface grinders
• Aluminum oxide abrasive grain with semi-friable characteristics for self-sharpening action
• Vitrified bond, non-porous construction with grain structure grade 6 for rigid form holding
• 46-grit coarse grade removes material quickly on roughing passes
• K hardness (medium) balances wheel life against cutting aggressiveness
• Rated to 3600 RPM maximum operating speed

Compatibility

Designed as a direct-mount replacement grinding wheel for horizontal-spindle surface grinders accepting an 8-inch diameter, 1/2-inch wide, Type 1 straight wheel with a 1-1/4 inch arbor bore.

Installation Notes

Surface grinding wheels must be installed by qualified machine operators or maintenance personnel in accordance with ANSI B11.23 safety requirements for surface grinding machines. Always ring-test the wheel before mounting and confirm the machine spindle speed does not exceed the 3600 RPM maximum marked rating. Use proper flange and blotter assemblies; never exceed flange-to-wheel diameter ratios that expose excessive wheel face. Guard all exposed wheel surfaces to the required arc before operation.