Lincoln Electric Flextec® 350X PowerConnect® / LF-74 One-Pak® #K4274-6
WARNING: Cancer & Reproductive Harm www.P65Warnings.ca.gov

WARNING: Cancer & Reproductive Harm www.P65Warnings.ca.gov
The Lincoln Electric Flextec® 350X PowerConnect® / LF-74 One-Pak (K4274-6) is a comprehensive multi-process welding system designed for CV MIG welding in shop environments. This package combines the versatile Flextec® 350X PowerConnect® power source with the reliable LF-74 wire feeder.
This Flextec® 350X PowerConnect® / LF-74 One-Pak offers a comprehensive and flexible solution for basic wire welding applications, combining power source versatility with a reliable wire feeding system in a convenient package.
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 1-844-682-0205 for assistance.
Dimensions (H x W x D) | 17 in x 13 in x 24 in (432 mm x 330 mm x 609 mm) |
Net Weight | 201 lbs (91.2 kg) |
Machines Processes | Stick (SMAW) Gouging (CAC-A) Flux-Cored (FCAW) TIG (GTAW) MIG (GMAW) Pulsed MIG (GMAW-P) Flux-Cored Self-Shielded (FCAW-S) Flux-Cored Gas-Shielded (FCAW-G) |
Max Rating | 425A |
Output Range by Mode | 5-425 A |
Machines Communication Technology | analog digital CrossLinc ArcLink |
Wire Feeder Supply Voltage | 40VDC |
Amphenol Pins (type of connector) | 5 14 12 |
Work Lead Connector Type | Tweco |
Number of driven rolls | 2 rolls |
Max spool diameter | 60lb |
Communication Technology | analog |
UI type | Simple |
Max Rated Output Capable | 500A |
Max Wire Diameter (Solid) | 1/16 in (1.6 mm) |
Max Wire Diameter (Cored) | 5/64 in (2 mm) |
Max WFS | 800IPM |
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 |
Wire Feeders Processes | MIG |
Safety Listing CSA | Yes |
Safety Listing UL | Yes |
Input Voltage | 200-600/1/3/50/60 |
Input Current | 3 Phase: 350A/34V/60%, 208-220/220-230/380-415/460/575, 45/40/23/19/15 1 Phase: 350A/34V/60%, 380-415/460/575, 39/32/26 1 Phase: 300A/32V/60%, 200-208/220-230, 62/56 |
Input Power | 3 Phase, 200-208/220-230/380-415/460/575 - 50/60 Hz 1 Phase, 380-415/460/575 - 50/60 Hz 1 Phase, 200-208/220-230 - 50/60 Hz |
Output Range | 3 Phase 200-600V: 5-425A Max OCV 80V DC 1 Phase 380-575V: 5-425A Max OCV 80V DC 1 Phase 200-230V: 5-350A Max OCV 67V DC |
Rated Output | 3 Phase 200-600V: 350A/34V/60% - 300A/32V/100% 1 Phase 380-575V: 350A/34V/60% - 300A/32V/100% 1 Phase 200-230V: 300A/32V/60% - 280A/31V/100% |
Typical Application | Construction Cross Country Pipeline Construction & Field Erection General Fabrication Heavy Equipment Heavy Fabrication Maintenance & Repair Offshore Oil & Gas Power Generation Shipbuilding Structural Fabrication Structural Welding |
Warranty | 3 Years |
SHIPPING DIMENSIONS |
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Height: | 1.00 Inches |
Width: | 1.00 Inches |
Length: | 1.00 Inches |
Weight: | 203 Lb(s) 7 Oz |