KP2745-764R - Lincoln KP2745-764R Magnum PRO 550A Contact Tip 7/64 Extended Life (10-Pack)

High-Performance Contact Tips for Industrial Welding

The Lincoln Electric KP2745-764R is a premium Copper Plus contact tip designed for the rigorous demands of high-amperage industrial welding. Engineered for use with Magnum PRO MIG guns, this 7/64-inch (2.8 mm) tip is rated for 550A, making it an essential component for heavy fabrication environments. The defining feature of the Copper Plus series is its increased diameter, which allows for a greater mass of copper. This additional mass significantly improves heat dissipation, keeping the tip cooler during prolonged welding arcs and thereby extending its operational lifespan.

Material composition is critical in consumable performance. These tips are manufactured from Copper Chrome Zirconium, a specialized alloy chosen for its resistance to annealing. Unlike standard copper tips that may soften under extreme heat, this alloy maintains its hardness and structural integrity, preventing the rapid wear of the tip orifice that leads to erratic arcs. This durability translates directly to productivity; the Extended Life design is proven to feed an average of 20 lbs more wire per tip compared to standard Magnum PRO counterparts, reducing the frequency of consumable changeovers.

Operational efficiency is further enhanced by Lincoln's proprietary Anti-Seize threading. The threads are designed with a flattened profile that prevents the contact tip from fusing to the gas diffuser, a common issue in high-heat applications. This ensures that when a changeover is finally necessary, it can be performed quickly and without damaging the gun assembly. Additionally, the tight tolerances of the tip's internal diameter ensure consistent wire placement, a crucial factor for maintaining the accuracy required in robotic and automated welding cells. This 10-pack supply ensures your facility is stocked for continuous operation.