Tru-maxx 66253292305 Surface Grinding Wheel 12in 46 Grit

Product Description

The TRU-MAXX 66253292305 is a Type 1 surface grinding wheel engineered for precision flat grinding operations on horizontal and vertical spindle surface grinders. Built with a ceramic abrasive grain bonded in a vitrified matrix, this wheel delivers consistent stock removal and controlled cut rates suited to ferrous and specialty alloy workpieces. At 12 inches in diameter and 1-1/2 inches thick with a 5-inch arbor hole, it fits full-size production and toolroom surface grinders. The 46-grit, Coarse grade, I hardness rating positions it for aggressive material removal while maintaining dimensional control. Rated to 2705 RPM maximum operating speed.

This grinding wheel is intended for use in machine shops, toolrooms, and production grinding environments where surface flatness and finish are critical. It is well suited for surface grinding of steel, cast iron, and similar ferrous materials on reciprocating or rotary table surface grinders requiring a 5-inch bore. The vitrified bond provides good porosity control and coolant acceptance, making it practical for wet or dry surface grinding setups. Installation and wheel dressing are performed by qualified machinists or grinding specialists.

Key Features

• Ceramic abrasive grain for consistent cut and extended wheel life on ferrous workpieces
• Vitrified bond construction allows good coolant penetration and controlled breakdown
• 46 grit, Coarse grade for high stock removal rates
• I hardness code with grain structure 6 for balanced wheel wear and workpiece support
• Non-porous, no-recess, non-tapered Type 1 straight wheel profile for flat surface applications
• Maximum operating speed of 2705 RPM — do not exceed

Compatibility

Designed as a replacement or production-run surface grinding wheel for horizontal or vertical spindle surface grinders accepting a 12-inch diameter, 5-inch bore, Type 1 straight wheel configuration.

Installation Notes

Grinding wheel mounting must be performed by a qualified machinist following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips using the ring test before mounting, and confirm the machine spindle speed does not exceed the 2705 RPM maximum rating stamped on the wheel or listed in product documentation. Use proper flanges and blotters sized for the wheel bore, and run the wheel under guard at operating speed for at least one minute before bringing it into contact with the workpiece. Never modify the arbor hole or force the wheel onto a spindle.