Tru-maxx 66253255603 Surface Grinding Wheel 80 Grit

Product Description

The TRU-MAXX 66253255603 is a Type 1 surface grinding wheel engineered for precision stock removal and surface finishing on ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and dimensional stability under sustained grinding loads. It carries a J hardness rating and a medium grade grain structure (grade 6), making it well-suited for moderate material removal where wheel breakdown and cutting action need to stay balanced. Rated to 3600 RPM, it is appropriate for bench grinders and surface grinders used in tool rooms, maintenance shops, and fabrication environments.

This wheel is sized at 7 inches in diameter with a 1/2-inch thickness and a 1-1/4-inch arbor hole, fitting standard surface and bench grinder spindles in that bore size. The white aluminum oxide composition and semi-friable grain provide a self-sharpening action suitable for grinding tool steels, HSS tooling, and general-purpose ferrous workpieces. It is a non-porous, no-recess design with specification code 28A80J6V31, which encodes the abrasive type, grit, hardness, structure, and bond for technicians who need to cross-reference wheel specs precisely.

Key Features

• Type 1 straight-wheel profile for surface and bench grinder applications
• Aluminum oxide abrasive with vitrified bond for dimensional stability and consistent cut
• 80 grit, J hardness, grade 6 grain structure — medium material removal with controlled wheel wear
• Semi-friable grain promotes self-sharpening action during use
• 3600 RPM maximum speed rating
• White wheel color for easy visual identification as aluminum oxide composition

Compatibility

Designed as an OEM-style replacement or standard fitment for surface grinders and bench grinders accepting a 7-inch diameter, 1-1/4-inch arbor hole Type 1 grinding wheel.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machine operator or maintenance technician in accordance with ANSI B11.9 and applicable shop safety standards. Always power down and lock out the grinder before mounting or removing the wheel. Inspect the wheel for cracks or chips before installation using a ring test, and never exceed the rated maximum RPM of 3600. Use properly sized flanges and a blotter on each side of the wheel per standard mounting practice.