0461235880 - ESAB A6 Mastertrac Submerged Arc Welding Tractor with PEK Controller

The Workhorse for Long Seams and Heavy Plate

If your shop floor is tackling long, continuous welds on thick materials, manual welding just can't compete with the efficiency of the ESAB A6 Mastertrac SAW PEK. This automatic submerged arc welding tractor is built to do one thing: lay down perfect metal, hour after hour. Whether you are splicing deck plates, fabricating bridge girders, or welding large storage tanks, the A6 Mastertrac takes the physical strain off the operator while delivering X-ray quality results that manual processes struggle to match.

The "Mastertrac" name is well-earned. It features a rugged 4-wheel drive carriage that grips the workpiece firmly, ensuring the arc stays exactly where you need it. No more worrying about the carriage slipping or stalling on minor surface imperfections. The low center of gravity and heavy-duty wheels mean it tracks true, reducing the need for constant manual adjustments. For the operator, this means less fatigue and more focus on monitoring the process. The unit is designed to be portable enough to be moved between workpieces but heavy enough to stay stable during high-amperage welding.

What really sets this unit apart is the PEK Controller. Gone are the days of guessing knob positions. The PEK gives you a clear digital display of your Volts, Amps, and Travel Speed. You can set your target parameters before you even strike an arc. Once you find the "sweet spot" for a specific joint, you can save those settings into the controller's memory. The next time you weld that same joint—whether it's tomorrow or next month—you just recall the program, and you're ready to go. This consistency is a game-changer for quality control and training new operators.

The A6 Mastertrac is also incredibly versatile. It handles the heat of high-amperage sub-arc welding without breaking a sweat. The flux recovery system (usually an add-on or integrated depending on the kit) keeps your work area clean and saves money on consumables. If you are looking to drastically increase your arc-on time and deposition rates, moving to the A6 Mastertrac SAW PEK is the logical step forward for any serious heavy fabrication shop.