Tru-maxx 66253255459 Surface Grinding Wheel 8in 46 Grit

Product Description

The TRU-MAXX 66253255459 is a Type 1 surface grinding wheel designed for precision stock removal on surface grinders in tool rooms, machine shops, and maintenance environments. The wheel measures 8 inches in diameter and 1/2 inch thick with a 1-1/4 inch arbor hole. It is made from aluminum oxide abrasive with a vitrified bond, rated at H hardness and a coarse 46 grit. The specification code 28A46H6V31 confirms the abrasive type, grit, hardness, and bond. Rated to a maximum of 3,105 RPM, this wheel suits moderate material removal passes on ferrous metals and tool steels. Installation and dressing are handled by machinists or grinding technicians.

This wheel is suited for flat surface grinding applications on horizontal-spindle reciprocating-table surface grinders. The coarse 46 grit and H hardness rating make it appropriate for aggressive stock removal rather than finish grinding. The vitrified bond provides rigidity and consistent cutting action across the wheel face. The non-porous, semi-friable aluminum oxide grain structure with a grain structure rating of 6 supports controlled breakdown and self-sharpening behavior during use, which is beneficial when working with harder ferrous workpieces.

Key Features

• Type 1 straight wheel profile — standard fit for horizontal-spindle surface grinders
• 46 grit coarse aluminum oxide abrasive for efficient stock removal
• H hardness (soft rating) with semi-friable grain for consistent self-sharpening
• Vitrified bond for rigidity and stable cutting geometry
• Specification code 28A46H6V31 for precise cross-referencing
• Non-porous construction and no recess — straightforward mounting and dressing

Compatibility

Designed for use on horizontal-spindle reciprocating-table surface grinders accepting an 8 inch diameter, 1/2 inch wide Type 1 wheel with a 1-1/4 inch arbor bore running at or below 3,105 RPM.

Installation Notes

Surface grinding wheels must be installed by a qualified machinist or grinding technician following ANSI B11.23 and the grinder manufacturer's guidelines. Always ring-test the wheel for cracks before mounting, and never exceed the rated maximum RPM of 3,105. Power down and lock out the grinder before changing wheels, and dress the wheel with an appropriate diamond dresser before the first cut. Always use the machine guard in place during operation.