The Frontier 400X is an advanced engine-driven welder/generator offering best-in-class arc performance, coupled with the latest welding innovation for maximum versatility on the jobsite. The machine's multi-process capability provides optimized CC and CV modes, plus specialized modes to support mechanized equipment and advanced GMAW applications including STT® and pulse welding. The machine features an industry-first, next-gen display with enhanced operator-focused features, such as save and recall weld parameter memories, maintenance reminders, and optional PIN user authorization.
Additional features include Auto-Stop/Start technology to help reduce engine idling, save on fuel costs, and avoid excessive wear on the engine, along with CrossLinc® Technology, which allows the adjustment of machine output at the arc to promote productivity, site safety, and overall weld quality. Experience the latest in welding innovation!
- Full Job-Site Versatility – Offers up to 400 amps (IEC rated at 325 amps) of welding current to tackle numerous welding and carbon arc gouging applications. Includes six optimized CC and CV modes, plus advanced modes to support pulsed TIG, pulsed MIG, STT®, and mechanized equipment.
- All Day Auxiliary Power – Provides up to 11 kW of continuous three-phase power to run industrial tools such as plasma cutters, pumps, or inverter welders.
- Next-Gen Display – Bright, durable 7 in. digital user interface for unmatched machine control - Save and recall memories, receive maintenance reminders, and enable PIN authorization.
- CrossLinc® Enabled – Allows communication through a standard weld cable to enable voltage or current control at the arc without a control cable to help improve safety, quality, and productivity with less trips to the power source and reduced jobsite clutter. Built-in True Voltage Technology (TVT) compensates for voltage drop to further improve operations.
- Run Longer and More Efficient – Weld longer with a class-leading 20 US gal. (75.7 L) fuel tank and integrated Auto-Stop/Start feature, designed to prevent excessive idling to help save on fuel costs, avoid unnecessary engine wear, and extend time between required maintenance.
- Field-Proven Diesel Engine – Powered by a 24.8 hp, naturally aspirated Kubota® diesel engine to provide extremely smooth and quiet operation while meeting EPA Tier 4 Final compliance.
- Trusted Reliability – Engineered tough to withstand harsh conditions and backed by trusted industry support and 3-year warranty.
| Dimensions (H x W x D) | 35.9 in x 25.3 in x 60 in (913 mm x 643 mm x 1524 mm) |
| Net Weight | 1035 lbs (469 kg) |
| Machines Processes | Stick (SMAW) Gouging (CAC-A) TIG (GTAW) MIG (GMAW) Pulsed MIG (GMAW-P) Flux-Cored Self-Shielded (FCAW-S) Flux-Cored Gas-Shielded (FCAW-G) Orbital MIG |
| Open Circuit Voltage | 71 Peak OCV at 1800 RPM |
| IEC Rating | 325A / 33V / 100% @ 104°F (40°C) |
| Output Range by Mode | Stick (SMAW): 30 - 400 Amps CV-Wire (GMAW, FCAW-S, FCAW-G): 10 - 45 Volts DC TIG (GTAW): 5 - 400 Amps Arc Gouging (CAC-A): 60 - 400 Amps |
| Rated Gouging Carbon Diameter | 5/16" (8.0 mm) |
| Machines Communication Technology | CrossLinc |
| Single Phase Auxiliary Output | 10,000 Watts Continuous / 11,500 Watts Peak, 120/240V |
| Three Phase Auxiliary Output | 11,000 Watts Continuous / 12,500 Watts Peak, 240V |
| Auxiliary Output Frequency | 60 Hz |
| Receptacle Types | NEMA 5-20R NEMA 14-50R NEMA 15-50R |
| Engine Brand & Model | Perkins® 403F-15T |
| Engine Description | 3 Cylinder Turbocharged Water Cooled Diesel Engine |
| Engine Horsepower | 24.7 hp (18.4 kW) |
| Engine Block Size & Displacement | 91 cu. in (1.5 L) Bore x Stroke - 3.3 in x 3.5 in (84 mm x 90 mm) |
| Emissions Rating | US EPA Tier 4 Final |
| High Idle Operating Speed @ Rated Output | 1800 |
| Low Idle Operating Speed | 1440 |
| Sound Rating @23 ft. (7m) | 67 dBA at Low Idle 71 dBA at High Idle |
| Fuel Tank Size (US gal.) | 20 US gal. |
| Fuel Tank Size (L) | 75.7 L |
| Oil Capacity (qts.) | 6.4 qts. |
| Oil Capacity (L) | 6.0 L |
| Coolant Capacity (US gal.) | 1.8 US gal. |
| Coolant Capacity (L) | 6.8 L |
| Typical Application | Construction Mining Railroad Maintenance Cross Country Pipeline Construction & Field Erection Maintenance & Repair Offshore Oil & Gas Power Generation Shipbuilding Structural Fabrication Structural Welding |
| Warranty | 3 Years Parts and Labor - Engine warranted separately by engine manufacturer |
The Frontier 400X supports Stick (SMAW) and TIG (GTAW) welding as standard processes. Many engine-driven models in this family also support MIG (GMAW) and flux-core (FCAW) welding when paired with an optional wire feeder. Check the spec sheet for the exact output range and recommended wire feeder compatibility.
Yes. Lincoln Electric engine-driven welders in this class include AC generator power — typically 120V and 240V auxiliary power outlets — making them ideal for jobsite use where power tools, lights, or other equipment need to run alongside welding operations. Refer to the spec sheet for exact generator wattage.
Lincoln engine drives in this class are available with Kohler, Kubota, or Perkins diesel/gasoline engines depending on the specific model variant. The engine brand and displacement is listed on the product label and in the owner's manual. Contact WeldingMart if you need to confirm the exact engine for a specific unit.
Duty cycle varies by amperage setting. At maximum rated output the duty cycle is typically 100% — engine drives are designed for continuous, all-day operation in demanding field environments. Refer to the spec sheet for the duty cycle curve at specific amperage levels.
Yes — this is a factory demo or low-hour unit directly from Lincoln Electric. Units may show light cosmetic marks from display use but are mechanically sound. Each unit includes any applicable remaining Lincoln Electric warranty. Contact WeldingMart for warranty status on the specific unit number.
Factory demo engine drives typically include the base machine and standard accessories as specified by Lincoln Electric. Consumables (electrodes, gas cylinders) are not included. See the product listing details or contact WeldingMart to confirm what is included with your specific unit.