0379507884 - ESAB Contact Jaw 2.5mm for A2/A6 Heads

Precision Contact for Automated Welding Systems

The ESAB Contact Jaw 2.5mm (Part Number 0379507884) is a critical component designed for the rigorous demands of automated welding environments. Specifically engineered for use with ESAB A2 and A6 automatic welding heads, this contact jaw serves as the primary interface for electrical transfer to the welding wire. In Submerged Arc Welding (SAW) and heavy-duty MIG/MAG automation, the stability of the arc is directly dependent on the quality of this electrical contact. A worn or ill-fitting jaw can lead to voltage fluctuations, micro-arcing inside the contact bore, and inconsistent weld bead profiles.

Manufactured from a high-grade copper alloy, this contact jaw offers exceptional thermal and electrical conductivity. The 2.5mm bore is precision-drilled to provide the ideal tolerance for 2.5mm welding wires, ensuring smooth feeding without excessive drag while maintaining constant electrical contact. This balance is essential for preventing wire shaving and ensuring that the welding current is transferred efficiently at the tool center point. For industrial operations running continuous automated cycles, using genuine OEM parts like this ESAB contact jaw minimizes the risk of unexpected stoppages and maintains the integrity of the welding procedure specification (WPS).

Regular inspection and replacement of contact jaws are fundamental to preventative maintenance in automated cells. Over time, the abrasive nature of the moving wire will elongate the bore, reducing contact area and causing arc instability. By installing a fresh ESAB 0379507884 contact jaw, operators ensure that their A2 or A6 heads continue to perform at peak efficiency, delivering the high-quality welds expected from ESAB automation equipment.