K4128-5 - Lincoln AutoDrive S Robotic MIG Torch 350A Air Cooled

Lincoln Electric K4128-5 AutoDrive® S Robotic Torch

Upgrade your robotic welding cell with the Lincoln Electric AutoDrive® S Torch (K4128-5), an air-cooled MIG gun built for the rigors of modern automation. Welders Supply offers this high-performance torch to fabricators who demand reliability and ease of maintenance. The AutoDrive® S series is engineered to address the common pain points of robotic welding: wire feeding issues, premature consumable wear, and inconsistent tool center points. By solving these issues, Lincoln Electric helps you maximize the ROI of your automation investment.

The K4128-5 features a rigid "S" style neck and mounting system that ensures stability during rapid robot movements. It is rated for 350 amps, providing ample power for single-pass fillet welds and multi-pass applications on thicker materials. The air-cooled design is efficient and cost-effective, removing the complexity of liquid cooling systems while still maintaining excellent thermal management. The torch's cable assembly is constructed with high-quality materials to resist rotational torsion and bending fatigue, ensuring a long service life even in dynamic 6-axis robot applications.

One of the standout benefits of this torch is its use of Magnum® PRO consumables. These are the same high-performance consumables used in Lincoln's semi-automatic hand guns, allowing shops to standardize inventory across both manual and robotic stations. The contact tips feature a flattened thread profile that increases surface area contact, improving conductivity and extending tip life. For maintenance teams, the simplified front-end design means faster changeovers and less time spent troubleshooting the torch, keeping your robots running and your parts moving out the door.

Performance Specifications

• Amperage Rating: 350A (Mixed Gas) / 385A (CO2).
• Cooling: Air-cooled for simplicity and reliability.
• Wire Diameter Capacity: Handles wire from 0.023" up to 5/64".
• Design: Streamlined for better access into fixtures and tooling.