Tru-maxx 66253255834 Surface Grinding Wheel 80 Grit

Product Description

The TRU-MAXX 66253255834 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals and hard materials. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rate and shape retention across extended use. It measures 8 inches in diameter, 1/2 inch thick, and features a 1-1/4 inch arbor hole. Rated at a maximum of 3600 RPM, it is suited for bench grinders and surface grinders found in machine shops, maintenance facilities, and fabrication environments. Licensed machinists and tool-and-die tradespeople are the primary installers and operators of this wheel.

This wheel is appropriate for surface grinding applications requiring a medium grade, 80 grit cut on steel, tool steel, and similar hard metals. The aluminum oxide grain with semi-friable characteristics allows the wheel to self-sharpen during use, maintaining cut efficiency without excessive loading. Its white color and I hardness code (soft-to-medium hardness range) make it a reliable choice for surface grinders where heat generation must be minimized to preserve workpiece integrity. Non-porous and non-tapered, it fits standard straight-wheel machine spindles.

Key Features

• Aluminum oxide abrasive with semi-friable grain structure for consistent self-sharpening action
• Vitrified bond provides rigid support and precise form holding during surface grinding
• 80 grit medium grade finish suitable for general stock removal on ferrous metals
• Type 1 straight wheel profile fits standard bench and surface grinder spindles
• 3600 RPM maximum speed rating for safe operation on compatible machines
• Non-porous, non-tapered, no-recess design for straightforward mounting

Compatibility

Designed as an OEM-style replacement or direct-fit grinding wheel for bench grinders and surface grinders accepting a Type 1 straight wheel with an 8 inch diameter, 1/2 inch thickness, and 1-1/4 inch arbor hole running at or below 3600 RPM.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified machinists or maintenance tradespeople following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the maximum RPM stamped on the wheel or listed on the blotter. Ensure the arbor flanges are clean, properly sized, and that the wheel spins freely before bringing the machine to full operating speed.