Lincoln Electric Frontier 400X Pipe Diesel Welder Generator, Kubota, K3485-4
The Lincoln Electric Frontier 400X Pipe (Kubota, K3485-4) is a diesel welder generator for cross-country pipeline work, with a dedicated Pipe mode whose DigFX technology produces a smooth, classic DC-style arc on downhill pipe. It offers up to 400 A (IEC rated 325 A), 11,000 W of continuous three-phase power and a 24.8 hp Kubota D1503-M engine.
Output ranges are 30-400 A for stick and pipe (SMAW), 5-400 A for DC TIG (GTAW), 60-400 A for arc gouging with carbons up to 5/16 in. (8.0 mm) and 10-45 V in CV-wire mode for MIG (GMAW) and self- or gas-shielded flux-cored welding; pulsed MIG and orbital MIG are supported as well. A Spool Gun mode supports the Magnum PRO 250LX GT for aluminum and specialty wire, and peak open-circuit voltage is 71 V at 1800 RPM.
Single-phase power is 10,000 W continuous (11,500 W peak) at 120/240 V and three-phase power 11,000 W continuous (12,500 W peak) at 240 V, through NEMA 5-20R, 14-50R and 15-50R receptacles. The naturally aspirated, water-cooled Kubota diesel meets EPA Tier 4 Final, runs from a 20 gal. (75.7 L) tank with Auto-Stop/Start and has a 400-hour oil change interval, up from 150 hours. The unit weighs 1035 lbs (469 kg) and measures 35.9 x 25.3 x 60 in. (H x W x D).
Highlights
Dedicated Pipe mode with DigFX technology for downhill pipe welding
Up to 400 A (IEC rated 325 A); stick/pipe 30-400 A, DC TIG 5-400 A
Aux power: 10,000 W single-phase, 11,000 W three-phase continuous
24.8 hp Kubota D1503-M diesel, EPA Tier 4 Final; 20 gal. tank
7 in. digital display with saved memories, maintenance reminders and PIN authorization
1035 lbs (469 kg); oil change interval of 400 hours, up from 150
Specifications
Brand | Lincoln Electric |
Manufacturer part number | K3485-4 |
Processes | Stick, gouging, TIG, MIG, pulsed MIG, flux-cored (self- and gas-shielded), orbital MIG |
Output range | Stick/Pipe 30-400 A; DC TIG 5-400 A; Arc Gouging 60-400 A; CV-Wire 10-45 V |
Gouging carbon | 5/16 in. (8.0 mm) |
Open circuit voltage | 71 peak at 1800 RPM |
Single-phase output | 10,000 W continuous / 11,500 W peak, 120/240 V |
Three-phase output | 11,000 W continuous / 12,500 W peak, 240 V |
Receptacles | NEMA 5-20R, NEMA 14-50R, NEMA 15-50R |
Engine | Kubota D1503-M, 24.8 hp (18.5 kW), 3 cylinder naturally aspirated water-cooled diesel |
Displacement | 91.4 cu. in (1.5 L) |
Fuel tank | 20 gal. (75.7 L) |
Oil capacity | 6.4 qts. (6.0 L) |
Coolant capacity | 1.8 gal. (6.8 L) |
Weight | 1035 lbs (469 kg) |
Dimensions (H x W x D) | 35.9 in x 25.3 in x 60 in (913 mm x 643 mm x 1524 mm) |
Good to know
Engine-driven equipment gives off carbon monoxide: run it outdoors only, away from doors, windows and vents.




