Flextec 650X LF-74 One-Pak

Flextec® 650X Multi-Process Welder w/ CrossLinc™ / LF-74 HD One-Pak®


Multi-process power source for heavy duty applications. CrossLinc Technology compatible.


Output Output


Input Input


CAD $14,810.00/EA



  • Use with a wide range of available 3 phase input power
  • Easy one-knob process selection
  • Fast arc response means smooth arc action and consistent bead appearance
  • User weld schedule memory storage allows easy recall of your critical or often repeated weld procedures with applicable feeders (User weld schedule memory settings available only with Power Feed® and
    Flex Feed® 84 wire feeders)
  • Synergic one knob control over wire feed speed and voltage with applicable feeders (Synergic control available only with Power Feed wire feeders)



  • Components designed to run cool for long life in high temperature environments
  • Engineered for outdoor use and harsh environments (IP23 rated)
  • Desert Duty® Rated for extreme temperatures up to 55°C



  • Ideal for large diameter wire or stick welding on thick materials
  • Compatible with most Lincoln Electric® feeders, including common bench and boom models, portable across-the-arc models and CrossLinc™ or ArcLink®-equipped models
  • Premium multi-process arc characteristics on all DC wire, stick and TIG processes



  • Full functionality without control cables
  • Enables remote procedure setting at the feeder to improve weld quality
  • Increases arc time with fewer trips to the power source to adjust settings
  • Improves safety by reducing jobsite clutter


  • Use with a wide range of available 3 phase input power
  • Easy one-knob process selection
  • Components designed to run cool for long life in high temperature environments
  • Ideal for large diameter wire or Stick welding on thick materials
  • Up to 800A of output

What's Included

  • Order a Lincoln One-Pak and get everything you need to complete a welding package - all with one order number. Shipped unassembled.

    • Flextec 650X (K3425-1)
    • LF-74 Wire Feeder HD (K2426-5)
      • Includes 0.035 in. 0.045 in. (0.9/1.2 mm) reversible drive rolls
    • Magnum Pro Curve 400, 15 ft (K2952-2)
    • Connector kit for 10 series feeders (K466-10)
    • Liner .052-1/16, 15ft (KP44-116-15)
    • Drive roll and guide tube kit 1/16 in (1.6 mm) cored (KP1505-1/16C)
    • Weld cable lug to lug 3/0, 10 ft (K1842-10)
    • Work lead pkg. 4/0, 15 ft, GC500 (K2149-1)
    • Flowmeter/regulator 355-2AR-58010 (3100211)

You May Also Need



Machines Processes Stick (SMAW)
Gouging (CAC-A)
Flux-Cored (FCAW)
Flux-Cored Self-Shielded (FCAW-SS)
Flux-Cored Gas-Shielded (FCAW-G)
Submerged Arc (SAW)
Machines Communication Technology analog
Wire Feeder Supply Voltage 115VAC
Amphenol Pins (type of connector) 5
Work Lead Connector Type Lug

Wire and TIG Feeders

Number of driven rolls 4 rolls
Feeder type Bench
Configuration Single
Max spool diameter Drum
Communication Technology analog
UI type Simple
Max Rated Output Capable 500A
Max Wire Diameter (Solid) 1.6
Max Wire Diameter (Cored) 2.0
Feedhead Configuration Single
Wire Configuration Single
Power Source to Feeder Communication Connector Type 14-pin
Accesories Communication Connector Type none
Gun Bushing Tweco #2-#4
Max Spool Size (lbs) 60
Max Spool Size (kg) 30
MIG-WireFeeders Yes
Wire Feeders Processes MIG
Flux Cored
Safety Listing CSA Yes
Safety Listing ETL No
Safety Listing UL Yes

Basic Specification

Input Current 61/50/40,57/47/38
Input Hertz 50,50/60,60
Input Power 380/460/575/3/50/60
Input Phase 3
Mode Icon CC/CV
Output Range 10-815A
Polarity DC
Rated Output 750A/44V/60%,650A/44V/100%


Typical Application Cross Country Pipeline
Construction & Field Erection
General Fabrication
Heavy Equipment
Heavy Fabrication
Structural Fabrication


Warranty 3 Years

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