64-4515 - Tregaskiss Style 15ft Liner for .045-1/16 Wire

Optimized Wire Delivery for Industrial MIG Systems

The integrity of the wire delivery system is a critical factor in maintaining arc stability and weld quality in Gas Metal Arc Welding (GMAW). This 15-foot Liner Assembly is precision-engineered to serve as a direct replacement for Tregaskiss style and Lightning MIG guns, specifically those rated for 300A and 400A service. Designed to accommodate wire diameters ranging from .045 inches to 1/16 inches (approximately 1.2mm to 1.6mm), this liner ensures that heavier gauge wires are fed smoothly through the cable assembly, minimizing friction and drag that can lead to erratic arc performance.

Constructed from high-tensile wound steel, the liner provides the necessary rigidity to prevent kinking while maintaining the flexibility required for operator maneuverability. The internal surface is finished to reduce the coefficient of friction against the welding wire, which is essential for preventing "bird-nesting" at the drive rolls and ensuring consistent contact tip voltage. In high-duty cycle environments where 300A and 400A guns are utilized, the thermal expansion and mechanical stress on consumables are significant; this liner is built to withstand these harsh conditions without premature deformation.

Proper liner maintenance is often overlooked in industrial settings, yet it is the most common cause of feeding issues. Over time, copper flaking from the wire, shop dust, and lubricant buildup can clog the liner, increasing drag force on the wire feeder motor. Replacing the liner with this high-quality aftermarket component restores the system to optimal parameters. The 15-foot length is standard for many industrial setups, but the liner is designed to be easily trimmed to the exact length required for your specific gun configuration, ensuring a perfect fit at the gas diffuser and power pin. Whether used in structural steel fabrication, heavy equipment manufacturing, or general industrial repair, this liner provides the reliability professional welders demand.

Compatibility extends to a broad range of "Tregaskiss Style" front-end consumables and gun bodies, making it a versatile addition to any MRO inventory. By ensuring a smooth path for the electrode, this liner helps maintain a stable current transfer and reduces the frequency of contact tip burnback, ultimately contributing to higher deposition rates and lower operational costs.