Tru-maxx 66253255458 Surface Grinding Wheel 8in 100 Grit

Product Description

The TRU-MAXX 66253255458 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals and tool steels. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rate and shape retention across extended use. It measures 8 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. At 100 grit and K hardness, it falls in the fine grade, medium hardness range — suited for finish passes where surface quality matters as much as material removal rate. Rated to 3600 RPM maximum. Weight is 1 pound.

This wheel is used on bench grinders and surface grinders in machine shops, tool rooms, and maintenance environments. The fine 100-grit aluminum oxide construction makes it appropriate for sharpening tooling, finishing flat surfaces, and light cylindrical grinding work. The vitrified bond resists heat buildup and holds form well, making it a reliable choice for shops running precision grinding operations on hardened steels and similar ferrous workpieces.

Key Features

• Type 1 straight wheel profile — no recess, flat face for surface and bench grinding
• Aluminum oxide abrasive, semi-friable — self-sharpens during use to maintain cut rate
• Vitrified bond for rigidity, shape retention, and resistance to oils and water
• 100 grit, K hardness (medium) — fine grade finish with controlled material removal
• Grain structure 6 for consistent porosity and chip clearance
• 3600 RPM maximum operating speed

Compatibility

Designed as an OEM-style replacement or standard fit for bench grinders and surface grinders accepting a Type 1 wheel with an 8 inch diameter, 1/4 inch thickness, and 1-1/4 inch arbor hole.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified personnel following ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the rated maximum RPM. Power down and lock out the grinder before mounting or removing the wheel. Use the correct flanges and blotters for the arbor size and ensure the guard is properly in place before operation.