5CW975 - Tweco 5CW-975 Stud Insulator Bushing for MIG Adapters

Critical Electrical Isolation for Professional MIG Systems

The Tweco 5CW-975 Stud Insulator (also known by stock number 1550-1975) is a vital component in the assembly of high-performance MIG welding connections. Designed to provide robust electrical isolation, this bushing ensures that the welding current is directed solely through the power pin and cable, preventing stray current from grounding out against the wire feeder chassis or adapter block. In the high-amperage environment of industrial welding, maintaining the integrity of your insulation is paramount not only for the quality of the weld arc but also for the safety of the operator and the longevity of the equipment.

Manufactured from a high-grade, heat-resistant composite material, the 5CW-975 is engineered to withstand the thermal cycling and mechanical vibration common in heavy-duty welding environments. Over time, inferior insulators can crack or carbonize, leading to "leakage" of the welding current. This can manifest as erratic arc performance, difficulty in starting the arc, or in severe cases, damage to the wire feeder's control electronics. By using genuine Tweco OEM parts, you ensure that the dielectric strength of the material meets the rigorous standards required for reliable operation.

This stud bushing is specifically designed to fit Tweco adapter kits—the interface that allows a Tweco MIG gun to connect to various brands of wire feeders (such as Lincoln, Miller, or Hobart). It acts as a spacer and shield around the connection stud. Precision molding ensures a tight fit that prevents movement and misalignment, which are common causes of premature wear in welding connections. Whether you are assembling a new adapter kit or refurbishing an existing setup, the 5CW-975 is the correct specification for restoring factory-level safety and performance.

Investing in genuine replacement parts like the Tweco 5CW-975 minimizes downtime and maintenance costs. While it is a small component, its role in the electrical circuit is significant. Ensure your shop maintains the highest standards of equipment integrity by replacing worn or damaged insulators immediately with this authentic Tweco component.