KP4120-1-62R - Lincoln Magnum PRO Water-Cooled Recessed Gas Nozzle 5/8 Inch

High-Performance Magnum PRO Consumable

For professional welders and welding engineers managing robotic cells, the Lincoln Electric KP4120-1-62R Magnum PRO Gas Nozzle represents the intersection of durability and precision. Designed for use with Magnum PRO Water-Cooled Robotic Torches, this nozzle is built to handle the high amperage and duty cycles characteristic of automated welding. The water-cooled architecture allows for superior heat dissipation compared to standard air-cooled counterparts, significantly extending the service life of the nozzle and preventing the adherence of spatter.

The KP4120-1-62R features a 0.625-inch (15.9 mm) orifice, providing a robust shield gas envelope for stable arc transfer and clean weld deposits. Its recessed tip geometry is a key specification for many robotic procedures; by positioning the contact tip slightly back from the nozzle exit, it reduces the accumulation of spatter on the tip face and minimizes the risk of the tip shorting against the workpiece in tight joints. This recess also helps in maintaining a consistent stick-out length, which is vital for voltage stability and arc control in automated programming.

One of the standout features of the Magnum PRO series is the secure thread-on mechanism. In robotic applications, high acceleration and deceleration forces can dislodge friction-fit components. The threaded design of the KP4120-1-62R ensures that the nozzle remains perfectly concentric with the contact tip and diffuser. This concentricity is non-negotiable for robotic accuracy, as even a slight misalignment can lead to uneven gas coverage and weld defects. The threads are precision-machined to resist seizing, allowing for quick replacement when necessary.

Optimized for high-heat applications, this nozzle supports the Magnum PRO promise of "Copper Plus" technology, offering larger mass for better thermal conductivity. When your application demands continuous arc-on time and consistent penetration profiles, relying on the correct nozzle configuration is critical. The KP4120-1-62R delivers the thermal management and mechanical stability required to keep your robotic welding operations running smoothly and defect-free.