KP1959-1 - Lincoln Electric Aluminum MIG Gun Liner .035 for Magnum 100L

Optimized Aluminum Wire Feeding for Lincoln Magnum Guns

The Lincoln Electric KP1959-1 Cable Liner is a specialized component designed to facilitate the smooth transmission of aluminum welding wire through GMAW (MIG) torch assemblies. Unlike standard steel wound liners used for mild steel applications, this liner is constructed from a high-grade, low-friction polymer (often referred to as Teflon in the industry). This material choice is critical when welding with soft alloys such as 4043 or 5356 aluminum, which are prone to shaving, micro-buckling, and "bird-nesting" when forced through higher-friction steel conduits.

Engineered specifically for .035 inch (0.9 mm) diameter wire, the KP1959-1 maintains tight tolerances to support the wire column while allowing it to slide freely. This precise internal diameter reduces the column strength required to push the wire, thereby minimizing the risk of feed failures at the drive rolls or within the gun cable. The liner comes in a standard 15-foot length, making it compatible with the majority of Magnum 100L, Magnum PRO 100L, and Magnum PRO 175L gun assemblies found on popular machines like the Power MIG series. It can be easily trimmed to fit shorter cable assemblies if necessary.

Technical Compatibility and Performance

Using the correct liner is the single most important factor in successful aluminum MIG welding without a spool gun. The KP1959-1 is the OEM replacement part recommended by Lincoln Electric for their compact MIG gun series. It ensures that the shielding gas flow remains laminar and unobstructed, as the outer diameter is sized correctly for the gas tube of the Magnum 100L series. Industrial operators and maintenance professionals rely on genuine Lincoln consumables to maintain the duty cycle and reliability of their welding equipment.

Installation is straightforward: simply remove the existing steel liner, ensure the gun cable is straight, insert the KP1959-1, and trim the excess at the back end or front end according to the specific gun manual instructions. Regular inspection of the liner for kinked sections or aluminum shaving buildup is recommended to maintain peak performance.