Lincoln Flextec® 500X/ LF-74 Heavy Duty One-Pak® K3612-2

Powerful Performance From the Ground Up. Out in the shipyards, construction sites and fabrication shops, it pays to keep it simple. The Flextec 500X multi-process welder is easy to set up and operate, yet rugged enough to stand up to heavy-duty indoor and outdoor applications. Basic pulse MIG capability is standard on the Flextec 500X , including weld modes for carbon steel, stainless steel, aluminum and metalcore electrodes. The Flextec 500X welder is also equipped with CrossLinc® technology giving you the flexibility to control the machine from hundreds of feet away without a control cable. One-Pak comes with the LF-74 wire feeder that features Lincoln Electric's patented 4-drive roll MAXTRAC® heavy-duty cast aluminum wire drive system that provides reliable feeding and durability. This bundle also includes the Magnum PRO Curve 400 welding gun, flowmeter regulator and hose, and the necessary cables and connectors.

Top Features:

• Flextec power sources support multiple weld processes: MIG, TIG, Stick, Gouging and FCAW. Flextec welders can be used with nearly all Lincoln Electric wire feeders due to available feeder communication connections.
• CrossLinc Technology communicates through a standard weld cable to enable voltage or current control at the arc without a control cable.
• IP 23 rating means the Flextec 500X welder will excel in outdoor environments, such as construction sites and shipyards.
• Warranty Length: 3 Years

All orders are processed within 2-3 business days (excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.

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Free shipping on orders over $99

How do I check the status of my order?

When your order has shipped, you will receive an email notification from us which will include a tracking number you can use to check its status. Please allow 48 hours for the tracking information to become available. 

If you haven’t received your order within 7 days of receiving your shipping confirmation email, please contact us at customer.service@arcsolinc.com with your name and order number, and we will look into it for you.