KP4121-1-62F - Magnum PRO Water-Cooled Robotic Nozzle, Bottleneck, Flush, 5/8 in

Lincoln Electric KP4121-1-62F Magnum PRO Bottleneck Gas Nozzle

The Lincoln Electric KP4121-1-62F is a premium gas nozzle engineered specifically for the rigorous demands of automated welding environments. Designed to integrate seamlessly with Magnum PRO Water-Cooled Robotic Torches, this consumable plays a critical role in maintaining weld quality and operational efficiency. In the world of robotic fabrication, downtime is costly, and the reliability of the front-end consumables is paramount. This nozzle is built to withstand the intense heat and high duty cycles associated with water-cooled systems, ensuring that your production line keeps moving with minimal interruptions for maintenance or part replacement.

One of the standout features of this nozzle is its bottleneck design. Unlike standard straight nozzles, the bottleneck shape tapers towards the outlet, providing the robotic arm with better clearance to access tight corners, complex joint geometries, and confined spaces without sacrificing gas coverage. This is particularly beneficial in automotive and heavy equipment manufacturing where fixture constraints often limit torch access. The nozzle features a 0.625-inch (15.9 mm) bore diameter, a standard size that balances gas flow velocity and coverage area effectively for a wide range of wire diameters and transfer modes.

The "Flush" designation refers to the relationship between the nozzle exit and the contact tip. With this nozzle, the contact tip sits flush with the end of the nozzle. This configuration is often preferred for short-circuit MIG welding or when visibility and gas coverage need to be balanced carefully. It helps prevent the contact tip from shorting out against the workpiece while still keeping the stick-out distance manageable. The thread-on connection mechanism ensures that the nozzle remains concentrically aligned with the contact tip, preventing uneven gas flow and porosity issues. Trust in genuine Lincoln Electric parts to deliver the consistency required for precision robotic applications.