KP4121-1-50F - Lincoln Magnum PRO Robotic Nozzle .500 Stick-Out Water Cooled

Genuine Lincoln Magnum PRO Nozzle for Robotic Torches

Keep your robotic welding operations running smoothly with the Lincoln Electric KP4121-1-50F Magnum PRO Gas Nozzle. When your production line depends on precision and durability, you can't afford to use inferior consumables. This nozzle is built to the exact specifications required for Lincoln's Magnum PRO Water-Cooled Robotic Torches, ensuring a perfect fit and reliable performance every time the arc strikes.

Built for the Heat

Robotic welding often involves high duty cycles and high amperages that would melt standard air-cooled parts. The KP4121-1-50F is designed for water-cooled systems, allowing it to remain cooler and last longer than conventional nozzles. The bottleneck shape reduces the front-end profile, allowing the robot to access restricted areas without sacrificing gas coverage. With a 1/2-inch (12.7 mm) orifice, it balances gas flow and velocity to protect the weld pool effectively.

Secure and Reliable Fit

This nozzle features a thread-on design, which provides a solid mechanical connection to the diffuser. This prevents the nozzle from vibrating loose during operation and ensures optimal electrical and thermal conductivity. The stick-out tip relationship is ideal for applications requiring a shorter electrical stick-out or better access to the root of the weld. Whether you are welding mild steel, stainless, or aluminum, upgrading to fresh Magnum PRO nozzles helps maintain arc stability and reduces porosity defects caused by poor gas coverage.