KP2843-3 - Lincoln Electric KP2843-3 Tomahawk LC40 Direct Contact Nozzle (40A) - 5 Pack

Technical Overview of the Lincoln KP2843-3 Nozzle

The Lincoln Electric KP2843-3 is a specialized direct contact nozzle engineered for the LC40 plasma torch, which is the standard torch supplied with the Tomahawk 625 plasma cutting system. This consumable is rated for 40 Amperes and is designed to facilitate "drag cutting," a process where the nozzle tip remains in physical contact with the workpiece during the cutting operation. This direct contact capability is achieved through specific thermal and electrical isolation properties inherent in the nozzle's design, preventing the double-arcing that typically damages standard standoff nozzles when they touch the plate.

Each pack contains five (5) nozzles, ensuring operators have sufficient replacement stock for continuous production. The KP2843-3 is versatile in its application, capable of processing a wide range of conductive materials including mild steel, stainless steel, aluminum, brass, and copper. By maintaining a zero standoff distance, the nozzle ensures a consistent arc length, which is critical for maintaining cut quality and reducing dross accumulation on thinner gauge materials. This component is also suitable for light gouging applications within the 40A range.

Proper maintenance of the plasma torch requires regular inspection of the nozzle orifice. As the orifice wears and becomes out-of-round, arc quality degrades, leading to beveled cuts and reduced cutting speeds. Replacing the nozzle with genuine Lincoln Electric parts ensures that the airflow dynamics and arc constriction remain within factory specifications for the LC40 torch.