Tru-maxx 66253255903 Surface Grinding Wheel 100 Grit

Product Description

The TRU-MAXX 66253255903 is a Type 1 surface grinding wheel designed for precision flat grinding on surface grinders in machine shops and tool rooms. The wheel measures 7 inches in diameter, 1/2 inch thick, and carries a 1-1/4 inch arbor hole for standard surface grinder spindle mounting. Constructed from white aluminum oxide abrasive bonded with a vitrified bond, it delivers a fine, consistent cut on ferrous metals and hardened tool steels. The I hardness rating and semi-friable grain structure allow the wheel to self-dress slightly during use, maintaining a sharp cutting face and reducing heat buildup at the workpiece surface.

This wheel is suited for surface grinding operations in maintenance, manufacturing, and tooling environments. It is appropriate for use on horizontal-spindle, reciprocating-table surface grinders. The fine 100-grit specification makes it well-matched for finish grinding passes where tight dimensional tolerances and smooth surface finishes are required. Machinists, tool grinders, and precision grinding technicians are the primary installers and operators of this wheel type.

Key Features

• Type 1 straight wheel profile for horizontal-spindle surface grinder applications
• White aluminum oxide abrasive with semi-friable grain structure for cool, sharp cutting
• Vitrified bond provides rigidity and consistent pore structure for controlled material removal
• 100 grit, fine grade for finish grinding passes and close-tolerance work
• I hardness (soft rating) helps the wheel release dull grains and resist glazing
• Non-porous, no-recess construction with grain structure rating of 6

Compatibility

Designed as an OEM-style replacement or standard consumable for horizontal-spindle surface grinders fitted with a 1-1/4 inch arbor bore and capable of mounting a 7 inch diameter Type 1 wheel.

Installation Notes

Surface grinding wheels must be mounted and dressed by a qualified machinist or grinding technician following ANSI B11.9 and applicable shop safety standards. Always perform a ring test before mounting to check for cracks, and confirm the machine spindle speed does not exceed the wheel maximum of 3600 RPM before operation. Power down and lock out the surface grinder before changing wheels, and use the correct flanges and blotters for the arbor size. Never exceed the rated maximum RPM and never grind on the side face of a Type 1 wheel.