Tru-maxx 66253255497 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66253255497 is a Type 1 surface grinding wheel designed for precision material removal on surface grinders. It measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. The wheel is made from aluminum oxide abrasive with a vitrified bond, delivering consistent stock removal on ferrous metals and tool steels. At 46 grit with K hardness rating, it falls in the coarse-grade, medium-hardness range — suited for aggressive cuts where surface finish is secondary to material removal rate. Rated to 3600 RPM maximum. Weight is 1 pound.

This wheel is used in surface grinding operations common to machine shops, tool rooms, and maintenance facilities. The Type 1 flat wheel profile mounts directly to horizontal-spindle surface grinders. The aluminum oxide grain and vitrified bond make it appropriate for grinding carbon steel, alloy steel, and similar ferrous workpieces. Semi-friable grain structure allows the wheel to self-dress moderately during use, extending cut life between dressing cycles. Suitable for both roughing passes and general-purpose stock removal where coarse grit is specified.

Key Features

• Type 1 flat wheel profile — no recess, direct mount to standard surface grinder spindles
• Aluminum oxide abrasive, white, semi-friable grain for consistent cutting action
• Vitrified bond, non-porous construction for dimensional stability under grinding loads
• 46 grit coarse grade with K hardness code and grain structure 6
• 3600 RPM maximum operating speed
• Specification code 28A46K6V31

Compatibility

Designed as a standard Type 1 replacement grinding wheel for horizontal-spindle surface grinders accepting a 7 inch diameter, 1-1/4 inch arbor hole wheel.

Installation Notes

Mounting and dressing of grinding wheels should be performed by qualified personnel following ANSI B11.9 and applicable shop safety standards. Before mounting, inspect the wheel for cracks using the ring test — do not mount a wheel that sounds dull or cracked. Power down and lock out the grinder before changing wheels. Never exceed the 3600 RPM maximum speed rating marked for this wheel.