K390 - K390 Tandem Arc Wire Reel Kit for TC-3 Carriage

Technical Overview of the Lincoln K390

The Lincoln Electric K390 Tandem Arc Wire Reels and Mountings kit is a specialized accessory engineered for the K325HC TC-3 travel carriage. This system is designed to facilitate high-deposition submerged arc welding by securely mounting two large-capacity wire reels directly onto the carriage assembly. The unit is constructed to accommodate standard 50 to 60 lb (22.7 to 27.2 kg) wire coils, ensuring that operators can maintain continuous welding arcs for extended periods without frequent interruptions for media replenishment.

Technically, the K390 installation is optimized for space efficiency. The mounting blocks are designed to occupy the footprint normally reserved for the automatic control box, utilizing the carriage's existing geometry for a secure fit. The system supports wire diameters ranging from 0.045-inch to 1/16-inch, covering the most common gauges used in heavy fabrication and structural steel applications. The inclusion of two 1-inch spindle coil adapters ensures compatibility with standard industrial wire spools, providing a stable feed mechanism that is critical for consistent tandem arc performance.

The physical specifications of the K390 reflect its industrial purpose. Weighing approximately 51 lbs and measuring 30.50 inches in height, 18.50 inches in width, and 24.00 inches in length, the assembly adds necessary ballast and stability to the travel carriage without exceeding operational load limits. This balance is crucial for maintaining precise travel speeds and track alignment during the welding process. By enabling the use of dual reels, this accessory is integral to tandem arc setups where multiple wires are fed simultaneously into the weld pool to increase deposition rates and travel speeds.

Integration with the TC-3 carriage transforms the standard setup into a high-efficiency automated welding station. The robust steel construction of the mounting hardware ensures durability against the mechanical stresses and thermal conditions typical of submerged arc welding environments. This component is essential for facilities aiming to maximize the throughput of their automated welding systems while maintaining the reliability associated with Lincoln Electric equipment.