Tru-maxx 66253255462 Surface Grinding Wheel 8in 46 Grit

Product Description

The TRU-MAXX 66253255462 is a Type 1 surface grinding wheel engineered for precision flat-surface stock removal on surface grinders. Manufactured from white aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent, free-cutting action across ferrous metals and tool steels. It measures 8 inches in diameter by 1/2 inch thick with a 1-1/4 inch arbor hole. The 46-grit coarse grade and J hardness rating make it well-suited for aggressive material removal while maintaining a controllable cut. The vitrified bond structure allows for efficient coolant penetration and self-dressing action during use. Rated to 3600 RPM maximum operating speed.

This wheel is intended for horizontal or vertical spindle surface grinders commonly found in machine shops, tool-and-die operations, and maintenance facilities. It is suited for grinding flat workpieces, re-sharpening tool blanks, and cleaning up weld faces on ferrous materials. The coarse 46-grit specification targets applications where stock removal rate is the priority rather than surface finish. A licensed machinist or skilled grinding operator typically selects this wheel for roughing passes before moving to a finer grit for finish work.

Key Features

• White aluminum oxide abrasive grain for free-cutting action on ferrous metals
• Vitrified bond provides rigidity and porosity for coolant flow
• 46 grit coarse grade suited for aggressive stock removal
• J hardness rating with grain structure 6 for medium wheel hardness
• Semi-friable abrasive for controlled self-sharpening during grinding
• No-recess Type 1 straight wheel profile for standard surface grinder mounting

Compatibility

Designed as a standard Type 1 straight grinding wheel for surface grinders accepting an 8 inch diameter wheel with a 1-1/4 inch arbor hole and a maximum operating speed of 3600 RPM or higher.

Installation Notes

Grinding wheel installation should be performed by a qualified machinist or grinding equipment operator following ANSI B11.9 and OSHA 29 CFR 1910.215 guidelines. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the maximum RPM stamped on the wheel. Use proper flanges and a blotter on each side of the wheel to ensure even clamping pressure.