Tru-maxx 66253292708 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66253292708 is a Type 1 surface grinding wheel engineered for precision stock removal on surface grinders in industrial and maintenance shop environments. Built from aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent, controlled cutting action across ferrous metals and hardened steels. At 46 grit and G hardness, it occupies the coarse, softer end of the spectrum — ideal for aggressive material removal where surface finish is secondary to throughput. The pink aluminum oxide grain is semi-friable, meaning it fractures under load to continuously expose fresh cutting edges, extending usable wheel life.

This wheel is suited for horizontal and vertical spindle surface grinding machines in tool rooms, job shops, and maintenance facilities. The 3-inch arbor hole fits standard surface grinder spindle configurations, and the Type 1 straight-wheel profile mounts without modification on compatible flanged spindle assemblies. At 2480 RPM maximum operating speed, it is rated for medium-sized surface grinder platforms. Typical applications include flat grinding of steel plates, fixture components, and hardened tool steel workpieces where a coarse, open-grained wheel is required.

Key Features

• 46 grit coarse aluminum oxide abrasive for aggressive stock removal
• G hardness (soft) rating allows the wheel to shed dull grains and self-dress under normal grinding pressure
• Vitrified bond provides rigidity, porosity, and thermal resistance during dry or wet grinding
• Semi-friable grain structure extends wheel life by continuously exposing fresh cutting edges
• Porous grain structure (structure 12) promotes coolant flow and chip clearance, reducing heat buildup
• Type 1 straight-wheel profile with no recess — mounts directly on standard flanged spindle assemblies

Compatibility

Designed for use on surface grinding machines with a 3-inch spindle arbor and flanged mounting hardware rated for Type 1 straight wheels. Verify machine spindle speed does not exceed 2480 RPM before mounting.

Installation Notes

Grinding wheel installation must be performed by qualified personnel following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always perform a ring test before mounting to check for cracks or damage. Power down and lock out the grinder before changing wheels, and confirm the machine's maximum spindle RPM does not exceed the wheel's 2480 RPM rating. Use proper flanges and blotters and never exceed the rated speed under any operating condition.