KP4120-1-75S - Lincoln Magnum PRO Robotic Nozzle 3/4-inch Stickout Water-Cooled

Heavy-Duty Nozzle for Robotic MIG Guns

When your robotic welding cell is running at full capacity, you need consumables that can take the heat. The Lincoln Electric KP4120-1-75S Magnum PRO Gas Nozzle is built for exactly that purpose. This isn't just a standard replacement part; it is a high-performance water-cooled nozzle designed to keep your automation running smoothly. Compatible with Magnum PRO Water-Cooled Robotic Torches, this nozzle features a secure thread-on connection. Unlike slip-on nozzles that can loosen over time due to thermal cycling, the thread-on design stays locked in place, ensuring that your Tool Center Point (TCP) remains accurate—a crucial factor for robotic precision.

This particular model features a large 3/4-inch (19.0 mm) opening, making it a beast for gas coverage. If you are welding aluminum or running high-deposition spray transfer on steel, that extra gas flow protects the puddle from porosity and oxidation. The "Stickout" profile means the nozzle is designed to let the contact tip sit slightly forward. This is perfect for getting into tight corners or deep grooves where a standard flush nozzle might get hung up. It also helps prevent the nozzle itself from dipping into the puddle in tight fit-up situations.

Durability is the name of the game with Magnum PRO. These nozzles are constructed to resist spatter buildup and handle the intense heat of water-cooled guns running at high duty cycles. Less spatter sticking means less time spent on nozzle cleaning cycles and more time burning wire. If you are looking to optimize your robotic welding process with consumables that last longer and perform better, the KP4120-1-75S is the right tool for the job. It delivers the consistency professional fabricators expect from Lincoln Electric, ensuring your welds look great and your robots stay productive.