13G514 - Walter 5-Inch Stainless Steel Knot Cup Brush with Safety Ring

Industrial-Grade Stainless Steel Surface Preparation

The Walter 13G514 is a high-performance 5-inch knot wire cup brush engineered for the most demanding industrial environments. Designed specifically for use on stainless steel and aluminum, this brush utilizes premium grade 304 stainless steel wire. This material selection is critical for preventing ferrous contamination on non-ferrous workpieces, ensuring that the brushed surface remains corrosion-resistant and compliant with strict industry standards. The wires are oil-hardened and tempered, a process that enhances their fatigue resistance and tensile strength, allowing them to withstand the rigors of heavy-duty material removal without premature breakage.

A defining feature of this model is its safety supporting ring. In high-speed rotational applications, centrifugal force typically causes wire filaments to flare outwards, reducing the effective cutting action and accelerating wear. The supporting ring on the 13G514 constrains the wires, maintaining a tight, aggressive knot profile for maximum impact. As the wire wears down during use, the operator can remove the ring, exposing fresh wire length and effectively doubling the brush's lifespan compared to standard models. This design not only improves safety by reducing wire fly-off but also optimizes consumable costs.

Precision balancing is a hallmark of Walter surface technologies. Each brush is individually balanced to ensure concentricity and smooth operation at speeds up to 8,600 RPM. This reduction in vibration protects the angle grinder's bearings and significantly reduces operator fatigue during extended shifts. The integrated 5/8"-11 threaded arbor ensures compatibility with most standard 5-inch and larger angle grinders, providing a secure, spin-on connection that eliminates the need for separate adapters or locking nuts.