Highlights

• Multi-Process Capability: Supports MIG, Flux-Cored, Stick, TIG, and Gouging
• CrossLinc™ Technology: Allows remote control without extra cables
• Rugged Design: IP23 rated and Desert Duty® rated for extreme temperatures up to 55°C
• High Output: Up to 800A of welding power
• Complete Package: Includes power source, wire feeder, and accessories in one part number

What's Included

• Flextec® 650X Multi-Process Welder with CrossLinc™ Technology (K3425-1)
• LF-74 Wire Feeder, Bench Model, Heavy Duty (K2426-5)
• Magnum® PRO Curve™ 400 Welding Gun (K2952-2)
• Work Lead and Weld Power Cable
• Control Cable Extension
• Drive Roll Kits for various wire types
• Flowmeter Regulator Shielding Gas Kit

Industries Served

• Heavy Fabrication
• Shipbuilding
• Construction
• Structural Steel
• Pipeline

Key Features

• Wide Input Power Range: Compatible with various 3-phase input power sources
• Easy Process Selection: One-knob control for simple operation
• Cool-Running Components: Designed for longevity in high-temperature environments
• Versatile Compatibility: Works with most Lincoln Electric® wire feeders
• User Weld Schedule Memory: Allows easy recall of critical or repeated procedures (with compatible feeders)

Benefits of the Flextec® 650X / LF-74 HD One-Pak®

• Enhanced Productivity: CrossLinc™ technology increases arc time and reduces trips to the power source
• Improved Safety: Reduces jobsite clutter by eliminating extra control cables
• Versatile Applications: Ideal for large diameter wire or stick welding on thick materials
• Durability: Engineered for outdoor use and harsh environments
• Simplified Ordering: Complete system available in one part number

This Flextec® 650X Multi-Process Welder w/ CrossLinc™ / LF-74 HD One-Pak® offers a powerful, flexible, and robust solution for demanding welding applications, combining advanced technology with heavy-duty components to ensure optimal performance in challenging industrial environments.

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 at (844) 682-0205 for assistance.

Product Weights & Dimensions

Machines

Wire and TIG Feeders

Basic Specification

Application

Warranty