43115X - 43115X Aluminum MIG Liner for Bernard Style Guns, 15ft, .035-3/64 Wire

High-Performance Aluminum Wire Feeding Solution

The GEN43115X is a premium aftermarket replacement liner designed to meet or exceed the specifications of the Bernard 43115X. Engineered specifically for the challenges of feeding soft aluminum welding wire, this liner is constructed from high-durability polymer materials (often referred to as Teflon in the industry) which provide a significantly lower coefficient of friction compared to standard steel liners. This reduction in friction is critical when pushing soft aluminum alloys like 4043 or 5356, as it prevents the wire from buckling, shaving, or binding inside the cable assembly.

This liner features a 15-foot length, making it suitable for standard length MIG gun cables used in industrial fabrication environments. It is sized to accommodate wire diameters ranging from 0.035 inches (0.9 mm) up to 3/64 inches (1.2 mm), covering the most common sizes used in aluminum MIG welding. The liner is compatible with Bernard Q-Gun, S-Gun, and T-Gun series platforms rated up to 400 Amps. Proper installation of a polymer liner is vital for maintaining the integrity of the gas shielding and ensuring smooth wire delivery to the contact tip.

Industrial maintenance teams and welding engineers choose this replacement part for its reliability and cost-effectiveness. By maintaining a smooth feed path, the GEN43115X helps reduce the frequency of "birdnesting" at the drive rolls and ensures consistent arc starts and weld bead appearance. It is an essential consumable for any shop transitioning to or maintaining aluminum welding operations using Bernard-style equipment.