K2619-2 - Lincoln Electric Precision TIG 275 Industrial Welder 460/575V

Industrial Precision for TIG and Stick Welding

The Lincoln Electric Precision TIG 275 (Model K2619-2) is a robust industrial welding power source designed for high-performance AC/DC TIG and Stick welding applications. Engineered for environments requiring 460V or 575V single-phase input power, this machine delivers a rated output of 275 amps at a 40% duty cycle, making it suitable for heavy-duty fabrication and maintenance cycles. The unit is built around a transformer-rectifier design known for durability and arc stability, enhanced by Lincoln's proprietary electronic controls.

Advanced Arc Technology

At the core of the Precision TIG 275 is Micro-Start II Technology. This system significantly improves low-amperage starting, arc stability, and weld cratering, which is critical for precision work on thin materials. The machine offers an exceptionally wide operating range of 2 to 340 amps, allowing operators to weld extremely thin gauge metals and heavy plate with the same equipment. For aluminum applications, the AC Auto Balance feature automatically adjusts the ratio of cleaning (electrode positive) to penetration (electrode negative) based on the amperage setting, optimizing the bead profile and cleaning action without manual intervention. Operators desiring specific arc characteristics can manually override this to fine-tune the cleaning action.

Operational Features and Expandability

The K2619-2 is designed with the operator in mind, featuring a simplified control interface that allows for quick selection of welding modes and polarity. The unit includes a side-mounted torch holder and integrated cable management to maintain a safe and organized workspace. While this SKU represents the base model, it is fully compatible with the optional Advanced Pulse Control panel, which adds TIG pulsing capabilities to control heat input and minimize distortion on critical components. The machine also supports Stick welding (SMAW) with excellent performance on cellulosic electrodes like Fleetweld 5P+ (E6010), accommodating electrodes up to 5/32 inch (4.0 mm) in diameter.

Installation and Specifications

This model requires a 460V or 575V single-phase 60Hz power supply. It features a substantial physical footprint with dimensions of 31 x 22 x 26 inches and a weight of 397 lbs, reflecting its heavy-duty internal components. The cooling system utilizes a Fan-As-Needed (F.A.N.) design, which reduces power consumption and minimizes the ingestion of dust and debris by operating the fan only when thermal conditions require it.