The Lincoln Electric KP2745-072-B100 represents a significant advancement in MIG welding consumable technology, specifically engineered for high-amperage industrial applications. Part of the Magnum PRO series, these contact tips feature Lincoln's proprietary Copper Plus technology. This design innovation utilizes a larger physical diameter compared to standard contact tips, thereby increasing the total copper mass. This additional mass serves as a superior heat sink, effectively drawing thermal energy away from the wire-tip interface. By maintaining lower operating temperatures, the electrical conductivity remains stable, and the structural integrity of the tip orifice is preserved for longer durations, even under the stress of 550A welding cycles.
A critical failure mode in high-duty cycle welding is the seizing of the contact tip to the gas diffuser due to thermal expansion and micro-arcing. The KP2745-072-B100 addresses this with Anti-Seize Threading. The thread profile is engineered with flattened peaks, which reduces the surface area prone to fusion while maintaining secure mechanical engagement. This feature ensures that tips can be removed easily during routine maintenance, preventing damage to the more expensive gas diffuser and gun neck components.
These tips are precision-machined to accommodate wire diameters ranging from .068 to .072 inches (1.7 to 1.8 mm). The bore tolerances are strictly controlled to ensure consistent electrical contact with the welding wire, which is essential for arc stability and consistent weld bead profiles. This 100-pack bulk configuration is intended for high-volume manufacturing environments where minimizing inventory turnover and maximizing arc-on time are primary operational metrics.
| Additional Information |
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| Packaging Description:100 Per Ea |
| Consumables Type:Contact Tip |
| Amperage Rating:550A |
| Technology:Anti-Seize Threading, Copper Plus |
| ----- new values below ---- |
| Consumables Type:Contact Tip |
| MIG Gun Model:Magnum PRO |
| MIG Wire Size:.068 - .072 in (1.7-1.8 mm) |
| Amperage Rating:550A |
| Technology:Copper Plus, Anti-Seize Threading |
| Brand:Lincoln |
| Packaging Description:100 Per Ea |
