KP4120-1-75F - Lincoln Magnum PRO Robotic Nozzle, 3/4" Bore, Flush, Thread-On

High-Performance Gas Shielding for Robotic Applications

The Lincoln Electric KP4120-1-75F Magnum PRO Gas Nozzle is a premium consumable component engineered specifically for the rigorous demands of automated welding environments. Designed to interface seamlessly with Magnum® PRO Water-Cooled Robotic Torches, this nozzle plays a critical role in maintaining arc stability and weld quality by directing shielding gas flow precisely over the weld pool. The unit features a substantial 0.75-inch (19.0 mm) bore diameter, which is particularly advantageous for high-amperage applications where a broader gas envelope is required to prevent atmospheric contamination and porosity.

This specific model utilizes a "Flush" tip relationship, meaning the contact tip sits flush with the end of the nozzle. This configuration is often selected to balance stickout visibility with gas coverage, providing a versatile setup for various joint configurations. The nozzle employs a robust thread-on connection mechanism. Unlike slip-on variants, the thread-on design ensures positive concentricity between the contact tip and the nozzle bore, which is essential for consistent tool center point (TCP) repeatability in robotic programming. Furthermore, the threaded interface significantly improves thermal conductivity, allowing heat to dissipate more effectively from the front end of the torch into the water-cooled gooseneck, thereby extending the service life of the consumable.

Designated for aluminum applications, the KP4120-1-75F is optimized to handle the unique challenges of welding reflective and heat-sensitive materials. The construction materials and geometry are selected to resist spatter adhesion, reducing the frequency of nozzle cleaning cycles—a vital metric in high-volume production lines. By integrating this nozzle into your Magnum PRO system, you ensure that your robotic welding cell operates at peak efficiency with minimal downtime related to consumable maintenance.