0558101873 - ESAB PP401+ Brass Neck Liner 180 Degree

Precision Wire Feeding for Industrial Applications

The ESAB 0558101873 Neckliner is a critical replacement component engineered for the ESAB PP401+ Push-Pull MIG gun system. In high-performance industrial welding environments, the integrity of the wire feed path is paramount to achieving consistent weld quality. This specific liner is manufactured from high-grade brass and is designed to fit the 180-degree (straight) neck configuration of the PP401+ torch. The neck liner, often referred to as a jump liner, serves as the final conduit for the welding wire as it transitions from the main cable assembly through the torch neck to the contact tip.

Brass is utilized in this application due to its excellent balance of durability and low friction coefficients. In push-pull systems, which are frequently employed for feeding soft wires like aluminum over long distances, minimizing drag in the neck area is essential to prevent wire deformation, shaving, or bird-nesting. The ESAB 0558101873 ensures that the wire maintains a centered and smooth trajectory, which directly correlates to arc stability and reduced downtime for maintenance.

Regular inspection and replacement of the neck liner are recommended as part of a preventative maintenance schedule. Over time, the internal surface of the liner can become grooved or clogged with debris, leading to erratic feeding. By using genuine ESAB parts like the 0558101873, operators ensure precise fitment and adherence to the original equipment manufacturer's specifications, thereby prolonging the service life of the torch and maintaining the high standards required for industrial fabrication.

This component is specifically compatible with the PP401+ series, a robust push-pull solution favored in shipbuilding, trailer manufacturing, and heavy transport industries. Ensuring that the neck liner matches the specific angle of the torch neck (in this case, 180 degrees) is vital for proper operation. Incorrect liner selection can lead to immediate feeding issues and potential damage to the torch body.