KP2029-2B1 - Lincoln Electric .040 TIG Collet for 9/20 Series Torches

Lincoln Electric KP2029-2B1: Precision TIG Collet for Industrial Applications

The Lincoln Electric KP2029-2B1 Collet is a fundamental component designed for high-precision Gas Tungsten Arc Welding (GTAW). Engineered specifically for use with .040-inch (1.0 mm) tungsten electrodes, this collet ensures optimal performance in low-amperage welding scenarios where accuracy and arc stability are paramount. As a genuine Lincoln Electric part, it meets rigorous manufacturing standards, providing industrial facilities and maintenance operations with a reliable consumable that minimizes downtime and equipment failure.

This collet is compatible with a wide range of industry-standard TIG torches, specifically the Lincoln PRO-TORCH™ PTA-9 and PTA-20 air-cooled models, as well as the PTW-20 water-cooled torch. It also fits most standard 9, 20, and 25 series TIG torches found in fabrication shops globally. The KP2029-2B1 serves as the critical interface between the torch body and the tungsten electrode, performing two essential functions: it physically secures the electrode in place to prevent slippage during operation, and it acts as the primary electrical contact point, transferring welding current from the power source to the tungsten.

Constructed from high-grade copper alloy, the KP2029-2B1 offers superior thermal and electrical conductivity. In TIG welding, poor electrical contact at the collet can lead to micro-arcing inside the torch head, causing overheating and premature failure of both the collet and the torch body. Lincoln Electric’s precision machining ensures a tight, concentric fit around the tungsten, maximizing surface contact area. This efficiency is particularly critical when working with .040-inch electrodes, which are typically used on very thin gauge materials such as stainless steel sheet, aluminum tubing, or exotic alloys in aerospace and medical applications.

For inventory managers and procurement specialists, stocking genuine Lincoln Electric consumables like the KP2029-2B1 reduces the risk of production inconsistencies. Generic or ill-fitting collets can deform under heat, leading to gas flow restrictions or difficulty in adjusting electrode stick-out. By standardizing on high-quality OEM parts, facilities ensure that their welding operators have the consistent equipment performance necessary to meet strict code requirements and quality control standards. This collet is an essential stock item for any operation utilizing 9 or 20 series TIG torches for fine detail work.