KP4523-1-75S-B25 - Lincoln KP4523-1-75S-B25 Magnum PRO Water-Cooled Nozzle 3/4-inch ID (25-Pack)

Precision Engineered for High-Amperage Fabrication

The Lincoln Electric Magnum PRO Water-Cooled Nozzle (KP4523-1-75S-B25) is a critical component designed for the rigorous environment of heavy industrial welding. Engineered exclusively for Magnum PRO Semi-Automatic Water-Cooled Welding Guns, this nozzle ensures that your equipment operates at peak efficiency even during extended duty cycles. In high-amperage applications, thermal management is paramount; this nozzle utilizes high-quality copper alloy construction to effectively dissipate heat, prolonging the life of both the consumable and the front-end gun components.

This specific model features a substantial 3/4-inch (19.1 mm) inner diameter (ID). A larger bore size is essential when welding with high parameters or spray transfer modes, as it provides a wide, laminar envelope of shielding gas. This extensive coverage protects the molten weld pool from atmospheric contamination, significantly reducing the likelihood of porosity and oxidation in the final weldment. The 3/4-inch opening is particularly advantageous for multi-pass welds on thick plate where maintaining a pristine gas shield is challenging due to heat and turbulence.

The nozzle is designed with a 1/8-inch (3.2 mm) stickout configuration. This means the contact tip protrudes 1/8 of an inch beyond the end of the nozzle. Stickout nozzles are favored in applications requiring tight access or where the welder needs enhanced visibility of the arc and puddle. By extending the tip, the operator can maintain the proper electrical stickout (ESO) while keeping the nozzle further back from the workpiece, reducing the accumulation of spatter on the nozzle face. This geometry is ideal for fillet welds and complex joints where a flush nozzle might obstruct the view.

Supplied in a bulk pack of 25, the KP4523-1-75S-B25 is intended for high-volume manufacturing operations. Consistent consumable quality is vital for automated and semi-automated processes, and Lincoln Electric's manufacturing standards ensure that every nozzle in the pack fits securely and performs identically. By standardizing on Magnum PRO consumables, facilities benefit from the "Copper Plus" technology often associated with the line, ensuring better heat dissipation and longer service life compared to standard commodity nozzles.