Tru-maxx 66253255823 Surface Grinding Wheel 8in 46 Grit

Product Description

The TRU-MAXX 66253255823 is a Type 1 surface grinding wheel designed for precision stock removal on surface grinders in metalworking and fabrication environments. It measures 8 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole. The wheel is constructed from aluminum oxide abrasive bonded with a vitrified bond, rated at a coarse 46 grit and K hardness. With a maximum operating speed of 3600 RPM, this wheel is suited for grinding ferrous metals and general-purpose bench or surface grinder applications. Installation and use are performed by machinists, tool and die makers, and maintenance technicians in shop environments.

This wheel fits standard surface grinders accepting an 8-inch diameter, 0.5-inch wide wheel with a 1.25-inch bore. The Type 1 straight-wheel profile makes it appropriate for flat surface grinding passes on steel and other ferrous alloys. The coarse 46 grit removes material aggressively, making it a practical choice for initial stock removal or reconditioning worn surfaces rather than finish work. The semi-friable grain structure helps the wheel self-dress during use, maintaining a consistent cutting edge throughout its service life.

Key Features

• Aluminum oxide abrasive for general-purpose ferrous metal grinding
• Vitrified bond provides rigidity and consistent form retention
• 46 grit coarse grade for aggressive stock removal
• K hardness (medium) balances wheel wear against cutting efficiency
• Semi-friable grain structure promotes self-dressing during use
• Type 1 straight profile fits standard surface grinder spindles

Compatibility

Designed as a direct-fit replacement for Type 1 straight surface grinding wheels with an 8-inch diameter, 0.5-inch thickness, and 1.25-inch arbor hole bore on compatible bench or surface grinders rated to accept a maximum wheel speed of 3600 RPM or higher.

Installation Notes

Surface grinding wheels must be installed by qualified personnel following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Before mounting, ring-test the wheel for cracks and verify that the grinder spindle speed does not exceed the wheel's 3600 RPM maximum rating. Always use proper reducing bushings and blotter flanges when mounting, and never force a wheel onto a spindle. Allow the wheel to run at operating speed with the guard in place for at least one minute before bringing it into contact with the workpiece.