Tru-maxx 66253255815 Surface Grinding Wheel 80 Grit

Product Description

The TRU-MAXX 66253255815 is a Type 1 surface grinding wheel designed for precision material removal on surface grinders. It is constructed from aluminum oxide abrasive with a vitrified bond, delivering consistent stock removal and a controlled finish on ferrous metals and tool steels. The wheel measures 8 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. At 80 grit with a K hardness rating and medium grade, it is suited for general-purpose surface grinding where moderate material removal and reasonable finish quality are both required. The vitrified bond provides rigidity and cool cutting action. Rated to 3600 RPM maximum. Typically installed and dressed by machinist or grinding technicians.

This wheel fits horizontal and vertical spindle surface grinders that accept a Type 1 straight wheel profile with a 1-1/4 inch arbor bore. The 80 grit medium-grade specification makes it appropriate for stock removal passes on hardened tool steel, carbon steel, and similar ferrous workpieces in job shop, toolroom, and maintenance grinding environments. The white aluminum oxide grain composition is semi-friable, meaning it self-sharpens under load, helping maintain cut rate over the wheel life.

Key Features

• Type 1 straight wheel profile — no recess, flat-face grinding geometry
• Aluminum oxide abrasive grain, white, semi-friable for self-sharpening performance
• Vitrified bond for rigidity and open, cool-cutting structure
• 80 grit, K hardness, grain structure 6 — medium-grade general-purpose spec
• Non-porous construction with 3600 RPM maximum operating speed
• 1-1/4 inch arbor hole fits standard surface grinder spindle sizes

Compatibility

Designed as an OEM-style replacement or standard consumable for surface grinders accepting a Type 1 straight wheel, 8 inches diameter, 1/4 inch face width, and 1-1/4 inch arbor bore.

Installation Notes

Grinding wheel installation and dressing should be performed by a qualified machinist or grinding technician. Before mounting, inspect the wheel for cracks or chips using a ring test — do not mount a damaged wheel. Power down and lock out the grinder before changing wheels, and confirm the machine spindle speed does not exceed the 3600 RPM maximum rating marked on the wheel. Follow ANSI B11.23 and applicable OSHA standards for abrasive wheel guarding and flanging.