Weiler 94638 Knotted Wire Wheel Brush 4 Inch

Product Description

The WEILER 94638 is a knotted wire wheel brush designed for aggressive surface preparation and metal cleaning. Built with carbon steel fill material and a standard twist knot configuration, this 4-inch wheel delivers consistent cutting action on welds, rust, mill scale, and surface coatings. The threaded mount with a 5/8-11 arbor hole seats directly onto angle grinders and bench grinders equipped with a compatible spindle. Rated to 20,000 RPM, it suits high-speed tooling commonly found in fabrication, maintenance, and HVAC sheet metal work. The 0.5-pound brush is a straightforward drop-in accessory for any professional requiring reliable wire wheel performance.

This wheel brush is suited for use in light fabrication shops, HVAC sheet metal preparation, plumbing pipe cleaning, and general industrial maintenance. Typical applications include cleaning weld seams before inspection, removing oxidation from ferrous metal surfaces, and prepping pipe ends ahead of threading or soldering. The 1/2-inch face width and 7/8-inch trim length make it practical for edge work and tight surface passes. It is sold as a single unit and is compatible with standard right-angle and straight grinders that accept a 5/8-11 threaded spindle.

Key Features

• Knotted carbon steel wire with standard twist knot for aggressive material removal
• 4-inch outside diameter with 1/2-inch face width for controlled surface contact
• Rated to 20,000 RPM for use with high-speed grinders
• 5/8-11 threaded arbor hole fits common angle and bench grinder spindles
• 7/8-inch trim length provides consistent wire exposure throughout brush life
• Filament wire diameter in the 0.0100 to 0.0199 inch range for balanced cut and flexibility

Compatibility

Designed for use with angle grinders and bench grinders equipped with a 5/8-11 threaded spindle. Shank is not included; the threaded mount is the sole attachment method.

Installation Notes

Installation and operation of wire wheel brushes should be performed by qualified personnel familiar with abrasive tool safety. Always power down and disconnect the grinder from its power source before mounting or removing the brush. Verify that the tool spindle speed does not exceed the 20,000 RPM rating marked on the wheel. Wear appropriate PPE including eye and face protection, as wire fragments can separate during use.