0558009358 - ESAB 5.8mm (.230) Water Injection Plasma Nozzle - Pack of 5

High-Performance Water Injection Technology

The ESAB 0558009358 is a specialized plasma cutting nozzle designed for heavy industrial applications utilizing water injection technology. Unlike standard air or gas-shielded plasma systems, water injection torches—such as the renowned ESAB PT-15 series—use a radial flow of water to constrict the plasma arc. This nozzle features a substantial 5.8mm (0.230 inch) orifice, indicating its suitability for very high amperage cutting processes, typically required for processing thick sections of stainless steel and aluminum.

The physics behind this design allows for exceptional arc density. As the plasma jet passes through the nozzle, the surrounding water vortex cools the nozzle surface directly while simultaneously squeezing the arc. This results in temperatures approaching 30,000°C or higher within the core, delivering cuts with remarkably square edges and minimal dross. The 5.8mm bore is precision-machined to ensure the water vortex remains stable, preventing arc instability that could lead to premature erosion of the copper alloy body.

For MRO specialists and industrial engineers, the reliability of the 0558009358 is paramount. In automated cutting environments, nozzle failure can lead to costly downtime and material wastage. ESAB manufactures these components to strict concentricity standards, ensuring that the electrode and nozzle align perfectly to maintain the integrity of the water shield. This pack of five ensures that maintenance teams have the necessary inventory to support continuous, high-duty-cycle production runs in shipyards, heavy fabrication plants, and steel service centers.