0004470919 - FineMarker 0.8mm Plasma Nozzle - Ref 11.838.111.608

Precision Plasma Marking Consumable

The ESAB 0.8mm Nozzle (Reference 11.838.111.608) is a specialized consumable designed for the FineMarker plasma marking system. In industrial fabrication, plasma marking is a critical process used for part identification, layout lines, and traceability on metal plates. Unlike cutting nozzles which constrict the arc to sever material, this marking nozzle is engineered to constrict the plasma arc just enough to modify the surface of the metal without penetrating it, creating clear, legible lines and characters.

This specific nozzle features a 0.8mm orifice, which is calibrated to produce a fine, sharp line width suitable for detailed text and precise layout work. The internal geometry of the nozzle is manufactured to strict tolerances to ensure consistent gas flow and arc centralization. This is essential for automated CNC marking applications where deviation in the arc can lead to illegible text or misplaced drill points. The nozzle is constructed from high-quality conductive alloys that withstand the thermal cycling inherent in the plasma process, ensuring a reasonable service life even in high-duty cycle environments.

Compatibility is key in plasma systems. This nozzle corresponds to the OEM part number 11.838.111.608, commonly associated with Kjellberg FineMarker units, which are often integrated into larger cutting tables or distributed by partners like ESAB. Using the correct nozzle diameter is vital for maintaining the balance between current density and gas pressure; a 0.8mm nozzle is typically optimized for specific low-amperage marking settings that prevent the arc from blowing through thin sheets or gouging too deeply into thicker plates.

Operators should regularly inspect the nozzle orifice for erosion or out-of-roundness. As the orifice wears and enlarges, the arc loses focus, resulting in wider, fuzzier marks and potentially unstable arc ignition. Replacing the nozzle at the first sign of wear ensures that part traceability remains compliant with industry standards and that downstream processes rely on accurate layout marks.