Tru-maxx 66253255642 Surface Grinding Wheel 7in 80 Grit

Product Description

The TRU-MAXX 66253255642 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and good form retention across a range of surface grinding applications. At 7 inches in diameter and 1/4 inch thick with a 1-1/4 inch arbor hole, it mounts directly to standard surface grinders. The 80 grit, K hardness (medium grade) combination suits general-purpose finishing where moderate material removal and surface quality are both required. Rated to 3,600 RPM, the wheel carries specification code 29A80K6V31 and is non-porous with a semi-friable grain structure for controlled breakdown during use.

This wheel is suited for surface grinding operations in machine shops, maintenance facilities, and tool rooms. It performs well on mild steel, tool steel, and similar ferrous workpieces where a medium grit finish is acceptable. The Type 1 flat wheel profile is the standard configuration for horizontal-spindle surface grinders. Licensed machinists, tool and die makers, and maintenance technicians are the typical installers and operators of this wheel in both production and job-shop environments.

Key Features

• Aluminum oxide abrasive for reliable performance on ferrous metals
• Vitrified bond provides good form retention and open cutting action
• 80 grit, K hardness (medium grade) balances material removal and surface finish
• Semi-friable grain structure promotes controlled wheel breakdown and consistent cut
• Non-porous, no-recess Type 1 flat wheel profile for standard surface grinder spindles
• Rated to 3,600 RPM maximum operating speed

Compatibility

Designed for use on horizontal-spindle surface grinders accepting a 7 inch diameter, 1-1/4 inch arbor hole, Type 1 flat wheel.

Installation Notes

Grinding wheel mounting must be performed by a qualified operator following ANSI B11.9 and applicable shop safety standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and never operate above the rated maximum RPM. Ensure the machine is fully de-energized and locked out before changing wheels. Use proper flanges and a compressible blotter on each side of the wheel when securing to the spindle.