14501143 - Tweco 45H-764-15 Heavy Duty MIG Liner 1/16-5/64 15ft

Heavy-Duty Wire Feeding Solution

The Tweco 1450-1143 (45H-764-15) Conduit Liner is a premium replacement component designed to restore optimal performance to your MIG welding operations. Engineered specifically for heavy-duty applications, this liner belongs to the renowned Tweco 45 Series, known for its robust construction and compatibility with professional-grade MIG guns. It is sized to accommodate larger diameter welding wires ranging from 1/16" (1.6mm) to 5/64" (2.0mm), making it an essential consumable for structural steel fabrication, heavy equipment repair, and industrial manufacturing environments where high-deposition welding is required.

Precision Engineering

Manufactured from high-tensile, zinc-plated spring steel, the 45H-764-15 liner offers exceptional resistance to corrosion and wear. The zinc plating acts as a lubricant, significantly reducing friction between the welding wire and the conduit wall. This low-friction design is critical for preventing wire chatter and ensuring a stable, consistent arc, particularly over the liner's full 15-foot length. The steel winding is precision-coiled to maintain a consistent inner diameter, preventing the wire from binding or buckling inside the cable assembly.

Maintenance and Compatibility

Regularly replacing your MIG gun liner is one of the most effective ways to prevent common welding issues such as burn-back, bird-nesting, and erratic feeding. The Tweco 1450-1143 is designed for easy installation in Tweco Spray Master, Professional, and other MIG guns that utilize 45-series consumables. Its 15-foot length can be easily trimmed to fit shorter cable assemblies if necessary, providing versatility across different equipment setups. By choosing genuine Tweco parts, you ensure that your equipment operates within its specified tolerances, prolonging the life of your contact tips and drive rolls.