14401125 - Tweco 44-564-25 MIG Gun Liner, 1/16-5/64 in, 25 ft

Tweco 1440-1125 (44-564-25) Standard Conduit Liner

The Tweco 1440-1125, also known by the model number 44-564-25, is a premium-grade conduit liner designed for industrial MIG welding applications. Part of the renowned Tweco 44 Series, this liner is engineered to facilitate the smooth transfer of welding wire from the feeder to the contact tip, minimizing drag and ensuring consistent electrical contact. This specific model is sized for larger diameter wires, specifically ranging from 1/16 inch (1.6 mm) to 5/64 inch (2.0 mm), making it suitable for heavy fabrication and structural welding tasks.

Constructed from high-quality, zinc-plated spring steel, the liner offers exceptional durability and resistance to corrosion. The zinc plating acts as a lubricant, significantly reducing the coefficient of friction between the liner wall and the welding wire. This reduction in friction is critical for maintaining a stable arc and preventing wire feeding issues such as bird-nesting or stuttering, especially over the extended 25-foot (7.6 meter) length of this conduit. The spring steel material provides the necessary rigidity to prevent kinking while maintaining enough flexibility to maneuver the MIG gun around complex workpieces.

The 44-564-25 is manufactured to precise tolerances, ensuring a uniform internal diameter that supports the wire without excessive play. It comes equipped with a standard brass stop crimped at the back end, designed to seat securely within the power pin or gun adapter of compatible Tweco MIG guns. This liner is an essential replacement part for maintaining the performance of long-reach welding systems often found in shipyards, trailer manufacturing, and heavy equipment repair.

Technical Specifications:

• Part Number: 1440-1125 (Model 44-564-25)
• Wire Compatibility: 1/16" (1.6mm) to 5/64" (2.0mm)
• Total Length: 25 Feet (7.6 Meters)
• Material: Zinc Plated High Carbon Spring Steel
• Outer Diameter: 0.187" (4.75mm)