Weiler 94631 Knotted Wheel Brush 4 Inch Carbon Steel

Product Description

The WEILER 94631 is a knotted wheel brush designed for aggressive surface preparation, deburring, and weld cleaning on metal workpieces. It mounts via a standard arbor hole and spins at up to 20,000 RPM, making it suitable for use with angle grinders and bench grinders in fabrication, maintenance, and industrial service environments. The 4-inch outside diameter and carbon steel knotted wire construction deliver consistent cutting action on rust, scale, and mill coatings. Standard twist wire knots provide durability under sustained load. At 0.43 pounds, the brush is lightweight enough for extended use without excessive tool fatigue.

This brush is used in metal fabrication shops, welding operations, and general maintenance applications where fast, aggressive surface conditioning is required. It is well-suited for removing weld spatter, corrosion, and surface oxides on structural steel, pipe, and plate. The arbor-hole mount makes it compatible with standard bench grinders and right-angle grinders equipped with a matching arbor. No shank is included, so the correct arbor adapter must be confirmed before installation.

Key Features

• Knotted carbon steel wire for aggressive material removal and long service life
• Standard twist wire knot type for consistent cutting performance
• 20,000 RPM maximum speed rating for high-speed grinder use
• 4-inch outside diameter with 1/2-inch face width for focused contact area
• Arbor hole mount — no shank included, fits standard arbor adapters
• 7/8-inch trim length provides controlled wire flex and contact pressure

Compatibility

Designed for use with bench grinders and angle grinders that accept an arbor-hole mounted wheel brush with a 4-inch outside diameter operating within the 20,000 RPM speed rating.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive wheel safety. Power down and disconnect the grinder from its power source before mounting or removing the brush. Confirm the tool's rated RPM meets or exceeds the brush's 20,000 RPM maximum before operation. Always use the appropriate arbor adapter and flanges, and verify secure seating before running the tool. Eye protection and appropriate PPE are required during use per standard shop safety practice.