KP4121-1-50R - Lincoln Magnum PRO Water-Cooled Robotic Nozzle .500 Recessed

Precision Control for Water-Cooled Systems

When your robotic setup is running hot and fast, you need a nozzle that can take the heat. The Lincoln Electric KP4121-1-50R is a water-cooled gas nozzle built for the Magnum PRO robotic torch platform. If you are overseeing automated cells or programming weld paths, you know that clearance is everything. This nozzle sports a bottleneck shape, tapering down to a 1/2-inch (0.500") bore. This profile is essential for getting the arc into tight corners or deep grooves where a standard straight nozzle might snag or cause a collision.

The "recessed" tip positioning means the contact tip sits back inside the nozzle. This is a standard setup for many spray transfer and pulse applications, helping to keep the tip cooler and reducing the buildup of spatter on the tip face. It also helps maintain a consistent gas shield around the wire stickout, even when the robot is moving at high travel speeds. Because it is a thread-on nozzle, it locks down tight. You won't have to worry about it vibrating loose during rapid repositioning moves, and the solid connection helps the water-cooling system pull heat away from the business end effectively.

Swapping out nozzles on a robotic torch needs to be quick and repeatable. The threads on the KP4121-1-50R are designed to resist seizing, making maintenance intervals smoother. Whether you are welding mild steel or stainless in a production jig, this nozzle provides the durability and gas coverage needed to keep your weld quality high and your spatter cleanup low.