Weiler 94676 Knotted Wheel Brush 4 Inch 12500 Rpm

Product Description

The WEILER 94676 is a knotted wheel brush designed for aggressive surface preparation, weld cleaning, and deburring on metal workpieces. It features a 4-inch outside diameter with a 3/8-inch face width and a stringer bead twist knot configuration, which concentrates wire contact for consistent cutting action on tight weld seams and rust. The brush uses carbon steel fill material and is rated to 12,500 RPM, making it suitable for use on angle grinders and right-angle die grinders common in fabrication, maintenance, and welding applications. It mounts via a 5/8-11 threaded arbor hole. Weight is 0.75 pounds.

This wheel brush is used in metal fabrication shops, structural steel work, pipeline maintenance, and general industrial settings where fast, consistent weld bead cleaning or surface conditioning is required. The stringer bead twist wire type is particularly effective on narrow weld passes and tight joints where a standard crimped brush lacks the cutting force needed. It is commonly selected by welders, pipefitters, ironworkers, and maintenance mechanics working with carbon steel substrates.

Key Features

• Knotted stringer bead twist wire for aggressive weld cleaning and deburring
• 4-inch outside diameter with 3/8-inch face width for targeted contact
• Carbon steel fill material suited for ferrous metal surfaces
• 12,500 RPM maximum speed compatible with standard angle grinders
• 5/8-11 threaded arbor hole for direct grinder spindle mounting without a separate shank
• 0.0100 to 0.0199-inch filament wire diameter range for a balance of flexibility and cutting aggression

Compatibility

Designed for use on angle grinders and right-angle grinders equipped with a 5/8-11 threaded spindle, which is the standard arbor size on most 4-inch and 4.5-inch angle grinders used in industrial and trade settings.

Installation Notes

Installation and use should be performed by qualified personnel familiar with abrasive wheel safety. Always confirm the tool spindle speed meets or does not exceed the 12,500 RPM maximum rating of the brush before mounting. Disconnect and lock out power to the grinder before attaching or removing the brush. Thread the brush clockwise onto the spindle until fully seated, and ensure the work area is clear of bystanders before operation. Eye protection and appropriate PPE are required per OSHA and ANSI B11 guidelines when operating wire brushes.