KP4523-1-75S - Lincoln Magnum PRO Water-Cooled MIG Nozzle 3/4 Inch ID 1/8 Inch Stickout

Lincoln Electric KP4523-1-75S Magnum PRO Water-Cooled Nozzle

The Lincoln Electric KP4523-1-75S is a specialized gas nozzle designed for the Magnum® PRO series of water-cooled semi-automatic welding guns. Specifically engineered for the 400A and 500A water-cooled models, this nozzle is an integral component of the Magnum PRO expendables platform, which is renowned for its durability and performance in high-demand industrial environments. This particular model features a 3/4-inch (19.1 mm) inner diameter (ID) and is configured for a 1/8-inch (3.2 mm) contact tip stickout.

In the realm of industrial MIG welding, the choice of nozzle geometry significantly influences weld quality and operational efficiency. The 3/4-inch ID is relatively large, making it suitable for high-amperage applications where a broad envelope of shielding gas is necessary to protect the molten weld pool from atmospheric contamination. This is particularly important in spray transfer modes often used with water-cooled setups. The 1/8-inch stickout specification indicates that when fully seated, the nozzle allows the contact tip to protrude 1/8 of an inch beyond the nozzle edge. This configuration is often selected for applications requiring enhanced visibility of the arc or access into tighter joint geometries where a recessed tip might cause the nozzle to obstruct the workpiece.

Constructed to withstand the extreme thermal stresses associated with water-cooled welding, the KP4523-1-75S utilizes high-grade copper alloy materials that maintain structural integrity under prolonged heat exposure. The nozzle features a threaded connection that ensures concentricity with the contact tip and gas diffuser, promoting laminar gas flow and reducing turbulence. By utilizing genuine Lincoln Electric Magnum PRO consumables, operators ensure compatibility and maximize the duty cycle capabilities of their welding equipment.