KP4121-1-50S - Lincoln Electric Magnum PRO Water-Cooled Bottleneck Nozzle .500 Stick Out

Maximize Robotic Uptime with Magnum PRO Performance

In the world of automated welding, the reliability of your front-end consumables directly impacts your cell's productivity and weld quality. The Lincoln Electric KP4121-1-50S Magnum PRO Gas Nozzle is built to keep your robots running longer and your welds looking better. Designed specifically for water-cooled robotic torches, this nozzle is the heavy-hitter you need for high-heat applications. When you are running high amperages for extended periods, heat buildup is the enemy of consumable life. This nozzle works in tandem with your water-cooled torch to dissipate heat effectively, preventing the premature failure and deformation that can lead to gas shielding issues and porosity.

Access Tight Spaces with Ease
One of the biggest challenges in robotic programming is avoiding collisions with the fixture or the part itself. The KP4121-1-50S features a smart "bottleneck" design that tapers down at the tip. This slimmer profile allows your robot to reach into corners, weld inside channels, and navigate complex geometries that a standard straight nozzle simply couldn't touch. It gives your automation team more flexibility in torch angles and path planning, ensuring you get the weld exactly where it needs to be without sacrificing gas coverage.

The "Stick Out" Advantage
This nozzle is configured for a "stick out" tip relationship. This means your contact tip will extend slightly past the end of the nozzle. Many welding engineers prefer this setup for specific applications because it allows for a shorter electrode extension (stick-out) relative to the work while keeping the nozzle further back from the puddle. This can help keep the nozzle cleaner from spatter and allows for better directional control of the arc in tight V-grooves or fillets.

Secure and Durable
Forget about nozzles that rattle loose or fall off during rapid robot movements. The thread-on design of the KP4121-1-50S ensures a rock-solid connection to the torch. This secure fit not only keeps the nozzle in place but also ensures perfect alignment with the contact tip, which is crucial for consistent Tool Center Point (TCP) and reliable arc starts. Constructed from high-quality copper alloy materials designed to resist spatter adhesion, this nozzle cleans up easily during ream cycles, extending the time between replacements and lowering your overall cost of operation.