Tru-maxx 66253255683 Surface Grinding Wheel 100 Grit

Product Description

The TRU-MAXX 66253255683 is a Type 1 surface grinding wheel designed for precision stock removal and finish grinding on ferrous metals and tool steels. Built with aluminum oxide abrasive grain and a vitrified bond, it delivers consistent cut rates and stable performance across a wide range of surface grinding applications. The wheel measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. At 100 grit and I hardness, it falls in the fine grade and soft hardness range, making it well-suited for applications where controlled material removal and surface finish quality matter. Maximum operating speed is 3600 RPM. The grain structure is rated 6, and the bond specification is 29A100I6V31.

This wheel is intended for use on horizontal-spindle surface grinders in machine shops, tool rooms, and maintenance environments. The aluminum oxide abrasive is a standard choice for grinding carbon steel, alloy steel, and hardened tool steel. The fine 100 grit designation suits finishing passes and light stock removal where surface finish quality takes priority over aggressive cutting. Licensed machinists, tool grinders, and skilled maintenance technicians are the typical end users for this style of wheel.

Key Features

• Type 1 flat wheel profile with no recess for straightforward surface grinding setups
• Aluminum oxide abrasive with semi-friable grain for consistent sharpening and cooler cutting action
• Vitrified bond provides rigidity and porosity control for stable performance in wet or dry grinding
• 100 grit fine grade delivers smooth surface finishes with controlled stock removal
• I hardness (soft rating) helps the wheel shed dulled grains efficiently, reducing glazing on harder workpieces
• Rated to 3600 RPM maximum operating speed

Compatibility

Designed as an OEM-style replacement or standard consumable for horizontal-spindle surface grinders accepting a 7 inch diameter, 1/2 inch thick, Type 1 wheel with a 1-1/4 inch arbor hole.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified machinist or tool grinder following ANSI B11.9 and applicable OSHA standards for abrasive wheel machinery. Before mounting, inspect the wheel for cracks or chips using the ring test. Never exceed the 3600 RPM maximum operating speed stamped on the wheel or listed on the blotter. Always dress the wheel after mounting and before the first grind to ensure true running and proper face exposure.