Weiler 94642 Knotted Wire Wheel Brush 4 Inch 20000 Rpm

Product Description

The WEILER 94642 is a knotted wire wheel brush designed for aggressive surface preparation, weld cleaning, and rust or scale removal on metal workpieces. Built with a carbon steel wire fill in a standard twist knot configuration, it delivers the bite needed for heavy stock removal and surface conditioning. The 4-inch outside diameter and 5/8-11 threaded arbor mount make it compatible with standard angle grinders and bench grinders used across fabrication, welding, and general metalworking trades. It is rated to 20,000 RPM, supporting use on high-speed tools common in professional shop and field environments.

This wheel brush is suited for ferrous metal applications including weld bead cleanup, mill scale removal, surface rust treatment, and pre-weld joint preparation. It is a standard tool in metal fabrication shops, structural steel erection, pipe welding, and maintenance welding operations. The 1/2-inch face width and 7/8-inch trim length provide good contact area and wire flex for working flat surfaces and mild contours. No shank is included, so it mounts directly via the threaded arbor to a compatible grinder spindle.

Key Features

• Knotted wire construction with standard twist knot for aggressive material removal
• Carbon steel fill material rated for ferrous metal surface prep and weld cleaning
• 4-inch outside diameter with 1/2-inch face width for broad surface contact
• 5/8-11 threaded arbor mount fits standard angle grinder and bench grinder spindles
• 20,000 RPM maximum speed supports use on high-speed pneumatic and electric grinders
• 7/8-inch trim length provides controlled wire flex during operation

Compatibility

Designed for use on angle grinders and bench grinders equipped with a 5/8-11 threaded spindle. Suitable for ferrous metal surface preparation applications in fabrication, welding, and industrial maintenance settings.

Installation Notes

A licensed or qualified metalworking professional should verify that the tool spindle speed does not exceed the 20,000 RPM maximum rating of this brush before mounting. Always power down and disconnect the grinder from its power source before installing or removing the wheel brush. Wear ANSI-rated eye protection and a face shield during operation, as wire bristle ejection is a known hazard with wheel brushes. Inspect the brush for damaged or missing wires before each use and replace if wire loss is detected.