Tru-maxx 66253292479 Surface Grinding Wheel 7in 46 Grit

Product Description

The TRU-MAXX 66253292479 is a Type 1 surface grinding wheel engineered for precision flat grinding on ferrous metals and hard materials. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal with a semi-friable grain that fractures cleanly to expose fresh cutting edges during use. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole, and carries a 46 grit coarse grade with K hardness for aggressive material removal. Rated to 3600 RPM, it is intended for use on surface grinders in production and toolroom environments. Installation and operation are performed by machinists and grinding technicians.

This wheel is suited for surface grinding applications on ferrous workpieces where coarse stock removal is the priority. The white aluminum oxide construction and medium hardness rating make it appropriate for tool steels and general-purpose bench or surface grinder work. The non-porous, vitrified bond structure provides rigidity and form-holding during flat grinding passes. It is a standard single-piece replacement wheel for shops running 7-inch surface grinders in light manufacturing, maintenance, and toolroom settings.

Key Features

• 46 grit coarse grade for aggressive stock removal on hard ferrous materials
• Aluminum oxide abrasive with semi-friable grain structure for consistent self-sharpening action
• Vitrified bond provides rigidity and precision form retention during surface grinding
• K hardness (medium) balances wheel life and cutting aggressiveness
• Non-porous, no-recess Type 1 flat wheel profile for straight surface grinding
• Rated to 3600 RPM maximum operating speed

Compatibility

Designed as a direct-fit replacement for 7-inch diameter Type 1 surface grinding wheels with a 1-1/4 inch arbor hole, compatible with surface grinders accepting that spindle and wheel specification.

Installation Notes

Surface grinding wheels must be installed and dressed by a qualified machinist or grinding technician following ANSI B7.1 safe use standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test prior to installation. Confirm the machine spindle speed does not exceed the 3600 RPM maximum rating marked on the wheel. Never exceed the rated speed, and ensure wheel guards are properly in place before powering the grinder.