Tru-maxx 66253255498 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66253255498 is a Type 5 recessed surface grinding wheel designed for precision stock removal on surface grinders. Built from aluminum oxide abrasive with a vitrified bond, it delivers consistent cut rate and long wheel life on ferrous metals and tool steels. The wheel measures 8 inches in diameter and 1 inch thick with a 1-1/4 inch arbor hole, a 3-1/4 inch recess diameter on one side, and a maximum operating speed of 3,105 RPM. At 46 grit with H hardness code and a grain structure of 6, it falls in the coarse, soft range — well suited for aggressive material removal where surface finish is secondary to stock removal rate.

This wheel is intended for use on horizontal-spindle surface grinders in machine shops, tool rooms, and industrial maintenance environments. The Type 5 recessed profile allows clearance for the spindle flange on compatible machines. The aluminum oxide grain and vitrified bond make it appropriate for grinding carbon steels, alloy steels, and similar ferrous workpiece materials. It is a single-wheel package, suitable for individual replacement or as a spare in production grinding operations.

Key Features

• Type 5 one-side recessed profile with a 3-1/4 inch recess diameter for spindle flange clearance
• 46 grit coarse aluminum oxide abrasive for aggressive stock removal
• H hardness (soft) rating allows the wheel to release dull grains and self-sharpen during use
• Vitrified bond provides rigidity, porosity control, and resistance to oils and coolants
• Semi-friable grain structure balances sharpness retention with controlled breakdown
• Rated to 3,105 RPM maximum operating speed

Compatibility

Designed as an OEM-style replacement or direct-use wheel for horizontal-spindle surface grinders accepting a Type 5 wheel with an 8 inch diameter, 1 inch face width, and 1-1/4 inch arbor hole.

Installation Notes

Grinding wheels must be installed by a qualified machinist or grinding equipment operator 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 3,105 RPM maximum rating marked on the wheel. Power down and lock out the grinder before changing wheels. Never overtighten flange hardware — consult the machine manufacturer for proper clamping torque guidance.