K395-1 - LT-7 Submerged Arc Track Tractor Wire Feeder

Automate Your Heavy Welding with the LT-7 Track Tractor

Take the strain out of long-seam welding with the Lincoln Electric LT-7 Tractor (Track Model). This self-propelled submerged arc feeder is designed to ride on a track system, turning tedious manual heavy-plate welding into a smooth, automated process. Perfect for welders working on bridge decks, beams, girders, and ship hulls, the LT-7 allows a single operator to manage the entire welding operation with ease. By automating the travel and feed, you can focus your attention on quality control, flux management, and joint cleaning, ensuring every pass meets the highest standards.

The LT-7 is built for the real world. It is rugged enough to withstand the harsh conditions of outdoor construction sites yet light enough to be moved quickly by hand to the next joint. One of its standout features is its compact size; it fits through small manholes and confined openings, bringing automated precision to hard-to-reach areas inside storage tanks or barge compartments. The unit's self-steering and exceptional tracking control mean it stays true to the joint, minimizing the need for constant manual correction and reducing operator fatigue over long shifts.

Setting up for different jobs is straightforward with the LT-7. The on-board control box puts speed and feed adjustments right at your fingertips. You can easily configure the machine for butt welds, horizontal fillets, and lap joints, with the flexibility to weld on either the left or right side of the tractor frame. The mechanical alignment between the wire and the joint is tight and reliable, often eliminating the need for expensive additional fixturing. Whether you are running 3/32" wire for lighter work or 3/16" for heavy deposition, the LT-7 delivers consistent, high-quality beads every time.

This package includes the tractor unit and a 25-foot control cable (K1822-25), getting you connected and ready to weld. With a travel speed range of 6 to 70 inches per minute and the ability to handle significant voltage fluctuations without skipping a beat, the LT-7 is the reliable partner you need for large-scale fabrication projects.