0700025315 - ESAB PA Bronze MIG Liner for 1.6mm Aluminum Wire

Technical Overview of the ESAB PA Bronze Liner

The ESAB 0700025315 is a specialized wire conduit designed to address the tribological challenges associated with feeding soft welding consumables. Designated as a PA Bronze Liner, this component is engineered specifically for 1.6mm (1/16 inch) wire diameters, typically utilized in high-deposition aluminum or copper-silicon welding processes. The liner features a composite construction strategy: the primary body is manufactured from Polyamide (PA), a thermoplastic chosen for its exceptionally low coefficient of friction against soft metal alloys. This minimizes drag within the cable assembly, a critical factor in preventing wire deformation and feedability issues.

To augment the thermal and mechanical resilience of the system, the liner incorporates bronze elements, typically situated at the front end where the liner interfaces with the hot contact tip and diffuser area. This hybrid approach prevents the polymer from softening or melting under the reflected heat of the welding arc while maintaining the smooth feed characteristics of plastic throughout the length of the torch cable. The 1.6mm internal diameter is calibrated to provide adequate clearance for the wire without allowing excessive lateral movement that could lead to arc instability.

Proper selection of the liner is paramount for maintaining the integrity of the welding arc in automated and manual MIG/MAG applications. The ESAB PA Bronze liner ensures that the wire is delivered to the contact tip with minimal resistance, thereby stabilizing the arc length and reducing the load on the wire feed motor. This component is an essential spare for maintenance operations involving ESAB PSF or MXL series torches configured for aluminum fabrication.