48H339 - Walter 13-L 404 Saucer-Cup Knot Wire Brush, 4-Inch Carbon Steel, 5/8-11 Arbor

Heavy-Duty Cleaning with the Walter Saucer-Cup Brush

The Walter Surface Technologies 13-L 404 Saucer-Cup Knot Wire Brush represents a significant innovation in surface preparation and weld cleaning. Designed to bridge the gap between standard cup brushes and wire wheels, this 4-inch tool features a unique saucer shape that allows operators to work at a comfortable 45-degree angle. This ergonomic design is critical for accessing tight corners, contours, and fillet welds that traditional flat brushes often miss. By aligning the wire tips directly with the workpiece in hard-to-reach areas, the Saucer-Cup brush ensures thorough cleaning without forcing the operator into awkward or fatiguing positions.

Durability and safety are at the core of this brush's engineering. It is constructed using premium oil-hardened carbon steel wires, which are twisted into tight knots. This knot-twisted design delivers aggressive cleaning action suitable for removing heavy rust, thick scale, weld slag, and old paint. Unlike crimped wire brushes that are better suited for light surface finishing, the 13-L 404 is built for heavy-duty material removal. The wires are 0.020 inches in diameter, providing the stiffness required to dig into surfaces and strip away contaminants effectively.

One of the standout features of this Walter brush is its integrated safety supporting ring. In high-speed grinding applications, wire fatigue and flaring can lead to wire breakage, creating a hazard for the operator. The supporting ring on the 13-L 404 constrains the wires, preventing premature flaring and significantly extending the life of the brush. As the brush wears down, the ring ensures that the wires remain compact and effective for longer periods. With a maximum rating of 20,000 RPM and a standard 5/8"-11 threaded arbor, this brush is compatible with most industrial angle grinders, making it a versatile addition to any metalworking toolkit available at Josef Gas.