Lincoln Electric Flextec® 500X/ Flex Feed® 74HT One-Pak® #K3612-3

Powerful Multi-Process Welding System

The Lincoln Electric Flextec® 500X/ Flex Feed® 74HT One-Pak® (K3612-3) is a comprehensive multi-process welding system designed for heavy-duty applications. It delivers up to 500 amps of welding power using advanced inverter technology, making it suitable for a variety of environments including shipyards, construction sites, and fabrication shops.

Highlights

• Multi-Process Capability: Supports MIG, Stick, TIG, and Flux-Cored welding
• Basic Pulse MIG Capability: Standard on the Flextec 500X for carbon steel, stainless steel, aluminum, and metalcore electrodes
• CrossLinc® Technology: Allows remote control without extra cables
• Rugged Design: IP23 rating and Desert Duty® rated for harsh environments
• Flex Feed 74HT Features: High torque, 4-roll feeder with remote voltage control and Carbon Arc Gouging stud

Key Features

• Simple Interface: For ease of use in various applications
• Reliable Performance: Durable construction with trayed and potted PC boards for environmental protection
• Flexible Power Source: Compatible with all 42VAC wire feeders for MIG and Flux-Cored welding
• Optimized Stick Welding: Suitable for both cellulosic and low hydrogen electrodes
• Touch-start TIG: For easy, contamination-free starts without high frequency

Industries

• Shipyards
• Construction Sites
• Fabrication Shops
• Heavy Manufacturing
• Industrial Maintenance

Benefits of the Flextec® 500X/ Flex Feed® 74HT One-Pak®

• Enhanced Productivity: Full functionality without control cables increases arc time
• Improved Safety: Reduces jobsite clutter by eliminating extra cables
• Versatile Applications: Suitable for indoor and outdoor heavy-duty applications
• Advanced Process Control: Flex Feed 74HT offers remote voltage control and Carbon Arc Gouging capability
• Convenience: One-Pak includes cables, gun, and regulator in one part number

Fast, Free Shipping & Easy Returns

At Welders Supply, we prioritize fast, reliable shipping and hassle-free returns. If you’re not fully satisfied with your purchase, you can return it within 14 days for an exchange, credit or refund. Please ensure all products are returned freight paid, in their original packaging, with all materials, manuals and accessories included. A restocking fee of up to 25% may apply based on product condition. Certain restrictions apply to custom orders, PPE and demo items. Call our customer service team 1-844-682-0205 for assistance. 

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Specifications - Flextec® 500X/ Flex Feed® 74HT One-Pak® #K3612-3

• Flex Feed 74 HT Product Info
• Flextec 500X Product Info
• CrossLinc Technology Brochure

Product Questions and Answers

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