K909-8 - Lincoln EH-405HD 400A Stick Welding Stinger

Heavy-Duty Industrial Electrode Holder

The Lincoln Electric EH-405HD (K909-8) is a premium-grade stick electrode holder engineered to meet the rigorous demands of heavy industrial welding. Designed for Shielded Metal Arc Welding (SMAW), this holder offers exceptional current transfer capabilities and thermal stability. It is rated for a continuous output of 400 amps at a 60% duty cycle, ensuring reliable performance during prolonged welding operations without overheating. For applications requiring higher short-term output, the unit can handle up to 500 amps at a 35% duty cycle, providing the versatility needed for various structural and fabrication tasks.

Constructed with high-quality materials, the EH-405HD features robust insulation that protects the operator from electrical hazards while minimizing heat transfer to the handle. The jaw mechanism is precision-machined to grip a wide range of electrode diameters, specifically accommodating rods from 1/8 inch (3.2 mm) up to 5/16 inch (7.9 mm). This wide capacity range allows welders to transition seamlessly between light and heavy-gauge electrodes depending on the material thickness and joint configuration. The heavy-duty spring mechanism ensures a tight, consistent grip on the electrode, reducing resistance and preventing slippage during manipulation.

Durability is a core component of the K909-8 design. It is built to withstand the mechanical impact and thermal stress common in environments such as shipyards, pipeline construction sites, and heavy equipment repair facilities. The connection points are designed for secure cable attachment, ensuring efficient power delivery from the welding power source to the arc. By maintaining low contact resistance, the holder maximizes energy efficiency and arc stability, contributing to superior weld quality.