KP2030-2B1 - Lincoln Electric .040" TIG Collet for PTA-9/PTW-20 Torches

Precision TIG Consumable for Enhanced Arc Stability

The Lincoln Electric KP2030-2B1 Collet is a critical component designed to facilitate the precise transfer of welding current to the tungsten electrode. Engineered specifically for use with PTA-9 and PTW-20 series TIG torches, this collet is manufactured to exacting tolerances to accommodate .040-inch (1.0 mm) tungsten electrodes. In the Gas Tungsten Arc Welding (GTAW) process, the collet serves as the primary electrical contact point between the torch body and the electrode; therefore, dimensional accuracy and material quality are paramount for maintaining a stable arc and preventing overheating.

Constructed from high-grade copper alloy, the KP2030-2B1 offers excellent thermal and electrical conductivity. This ensures that the welding current is delivered efficiently to the electrode tip without excessive resistance heating within the torch head. The split-design of the collet allows it to compress securely around the tungsten when the back cap is tightened, holding the electrode firmly in place to prevent slippage or rotation during operation. Regular inspection and replacement of collets are recommended, as thermal cycling and mechanical wear can eventually degrade the gripping surface, leading to poor arc starts and wandering arcs.

This component is an essential part of the consumable stack for precision welding applications where .040" tungsten is utilized, typically for thin-gauge materials such as stainless steel or aluminum sheet. By using genuine Lincoln Electric parts, operators ensure compatibility and performance consistency across their welding equipment.