KP52070-1 - Lincoln Electric 5/32" TIG Collet for 17/18/26 Series Torches

Lincoln Electric KP52070-1 5/32" TIG Collet

The Lincoln Electric KP52070-1 is a premium-grade 5/32-inch (4.0 mm) collet designed for heavy-duty TIG welding applications. As a critical component in the TIG torch assembly, this collet performs two essential functions: it physically secures the tungsten electrode within the torch head and serves as the primary contact point for transferring welding current to the electrode. Manufactured from high-quality copper alloy, it offers excellent thermal and electrical conductivity, reducing resistance and heat buildup during prolonged welding sessions.

This collet is engineered to fit standard 17, 18, and 26 series TIG torches, including Lincoln's own PTA-17, PTA-26, and PTW-18 models. Its split-body design allows it to compress tightly around the tungsten when the collet body and back cap are tightened, ensuring the electrode remains stable and centered. This stability is crucial for maintaining a consistent arc length and preventing tungsten contamination or wandering, particularly when operating at the higher amperages typically required for 5/32" electrodes.

Using genuine Lincoln Electric consumables like the KP52070-1 ensures compatibility and longevity. Inferior collets can deform under heat or fail to grip the tungsten properly, leading to arc instability and frequent replacements. This component is ideal for industrial fabricators working with thick aluminum or steel sections where larger diameter tungsten electrodes are necessary.