Tru-maxx 66253255628 Surface Grinding Wheel 46 Grit 8 in

Product Description

The TRU-MAXX 66253255628 is a Type 5 recessed surface grinding wheel designed for precision stock removal on surface grinders in metalworking and tool-and-die applications. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent, controllable cutting action on ferrous metals. The wheel measures 8 inches in diameter and 1 inch thick with a 1-1/4 inch arbor hole, rated to a maximum of 3105 RPM. At 46 grit and H hardness (coarse grade, soft hardness rating), it is suited for aggressive material removal where surface finish is secondary to stock removal rate. The semi-friable grain structure aids in self-sharpening during use.

This wheel is intended for use on horizontal-spindle surface grinders in machine shops, tool rooms, and maintenance environments. The Type 5 configuration features a single-side recess of 3-1/4 inches, which reduces contact area and heat buildup during grinding passes. It is appropriate for production grinding of steel and other ferrous workpieces where a coarse, fast-cutting action is required. Licensed machinists and grinding machine operators are the primary installers and users of this wheel type.

Key Features

• Aluminum oxide abrasive — effective on carbon steel, alloy steel, and ferrous metals
• Vitrified bond provides rigidity and precise form holding during surface grinding
• 46 grit coarse grade for high material removal rates
• H hardness code with soft hardness rating and grain structure 6 for semi-friable cutting action
• Type 5 single-side recess (3-1/4 inches) reduces heat and improves coolant access
• Maximum rated speed of 3105 RPM — do not exceed

Compatibility

Designed for use on horizontal-spindle surface grinders accepting an 8 inch diameter, 1 inch thick Type 5 wheel with a 1-1/4 inch arbor hole. Confirm machine spindle speed does not exceed the 3105 RPM maximum rated speed of this wheel before mounting.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B7.1 safety standards and the machine manufacturer's instructions. Inspect the wheel for cracks or chips using the ring test before mounting — do not use a damaged wheel. Ensure the machine is fully powered down and locked out before changing wheels. Never exceed the maximum RPM stamped or listed for this wheel; overspeed is a serious safety hazard.