KP2217-4B1 - Lincoln Python 3/64 Aluminum Contact Tip (4043) - 25 Pack

Precision Engineered for Aluminum Push-Pull Systems

The Lincoln Electric KP2217-4B1 is a heavy-duty contact tip specifically designed to address the unique challenges of welding with 3/64-inch (1.2mm) aluminum wire, particularly the 4043 alloy series. In industrial fabrication environments utilizing Python Series MIG Guns, maintaining consistent electrical contact and wire feeding is critical. This contact tip features a slightly oversized Inner Diameter (ID) of 0.06 inches. This engineering choice is deliberate; aluminum wire, especially softer alloys like 4043, expands significantly as it heats up during the welding process. A standard steel tip would cause the expanding aluminum to seize, leading to burnback and bird-nesting. The KP2217-4B1 provides the necessary clearance to accommodate this thermal expansion while maintaining the electrical contact point required for a stable arc.

Rated for use with 400A Standard Python Series MIG Guns, these tips are built to withstand the high heat inputs often associated with industrial aluminum welding. The heavy-duty copper alloy construction ensures superior thermal conductivity and wear resistance compared to standard light-duty tips. This durability is essential in push-pull systems where the mechanical stress on the wire and the tip interface is higher. By using the correct tip geometry for the specific wire alloy, operators can ensure the longevity of their torch front-end parts and reduce the frequency of unscheduled maintenance stops.

This product is supplied in a package of 25, catering to high-volume production environments such as shipyards, trailer manufacturing, and automotive assembly lines where consumable turnover is a regular part of operations. Ensuring your tool crib is stocked with the correct KP2217-4B1 tips guarantees that your Python push-pull systems operate at peak efficiency with 4043 aluminum wire.