Tru-maxx 66253269696 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66253269696 is a Type 1 surface grinding wheel built for flat surface stock removal on ferrous metals. It measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole. The wheel is made from aluminum oxide abrasive bonded with a vitrified bond system, producing a coarse, semi-friable grain that fractures predictably during grinding to expose fresh cutting edges. Rated at a maximum of 2,705 RPM, it is designed for use on reciprocating and rotary surface grinders in shop and production environments. The I-hardness code and grain structure 5 make it well-suited for general-purpose surface grinding on steel and similar ferrous workpieces.

This wheel is used in machine shops, tool rooms, and manufacturing facilities where flat surface grinding is a routine operation. Typical applications include surface finishing, parallelism correction, and material removal on steel plates, blocks, and fixtures. The coarse 46-grit rating favors aggressive stock removal over fine finish work. It is installed and used by machinists, grinding machine operators, and tool-and-die professionals working with surface grinders that accommodate a 12-inch wheel with a 3-inch arbor bore.

Key Features

• Type 1 flat wheel profile - no recess, straight face geometry for standard surface grinding
• 46-grit aluminum oxide abrasive for coarse, high-removal-rate grinding on ferrous metals
• Vitrified bond provides rigidity and porosity control for consistent cut performance
• Semi-friable grain structure self-sharpens during use, reducing glazing between dresses
• I-hardness (soft rating) releases dulled grains efficiently, extending effective cut life
• Maximum 2,705 RPM rating - match to grinder speed before mounting

Compatibility

Designed for use on surface grinders accepting a 12-inch diameter, 1-inch wide, Type 1 wheel with a 3-inch arbor hole. Confirm machine spindle speed does not exceed 2,705 RPM before installation.

Installation Notes

Surface grinding wheels must be installed by a qualified machinist or grinding machine operator following ANSI B11.22 and OSHA 1910.215 guidelines. Power down and lock out the grinder before mounting or removing the wheel. Perform a ring test on the wheel before installation - a cracked wheel produces a dull sound and must not be used. Do not exceed the maximum RPM marked on the wheel; always verify the machine spindle speed is at or below 2,705 RPM.