For maximal performance on the robot.
  • Steel/stainless steel/aluminium
  • 25 - 320 A
  • ED 60% at 40°C: 280 A
  • Weldable wires Pulse: 0.6 – 1.2 mm Ø

Perfectly integrated.

Simple and quick integration into different automation systems for all common robot manufacturers thanks to common digital bus protocols and two analogue interfaces to choose from.

Outstanding welding properties.

Cutting-edge processor technology ensures optimum interaction of all parameters and components involved in the welding process while maximising arc performance.

Peak values in arc control are achieved and optimal welding results can be reproducibly achieved for all materials.

Sophisticated design.

The S3-RoboMIG XT has been built to live up to all requirements for many years of use. A gas cylinder holder, crane rings, torch holders, and a robust build complete this portfolio.

Certified quality.

The EN1090 WPS folder avoids time- and cost-intensive individual tests of the welding results. The folder contains independently certified welding instructions for all the relevant standard welding procedures.

Lorch Speed processes.

The default Lorch SpeedPulse XT, TwinPuls XT, SpeedArc, SpeedArc XT, Pulse, and TwinPulse processes, and the optional SpeedUp, SpeedCold, and SpeedRoot upgrades make welding faster, improve quality, and reduce spatter.

Future-proof by upgrade capacity.

The S3-RoboMIG XT is future-proof and perfectly flexible. The system’s process equipment can be customised to new requirements at any time with all Lorch MIG-MAG speed processes: SpeedCold, SpeedUp, SpeedRoot.

Country-specific product variants.

Country-specific product variants are available for this Lorch welding unit. These may differ in the mains supply, the mains plug or other product features required for the country. You want to know more? Contact your local Lorch partner.

Technical data

MIG-MAG welding
Welding range 3~ 400 V: [A] 25 - 320
Voltage range: [V] 15.2 - 30
Weldable Wires Steel: [Ø in mm] 0.6 - 1.2
Weldable wires aluminum: [Ø in mm] 1 - 1.2
Weldable wires CuSi: [Ø in mm] 0.8 - 1.2
Voltage setting
Voltage setting: Continuo
MIG-MAG duty cycle
Duty cycle 100% (40°c): [A] 400
Duty cycle 60% (40°c): [A] 500
Duty cycle at max. current (40°c): [%] 60
Process-independent data
Feed speed standard: [m/min] 0.1 - 25
Mains 400 V
Mains voltage 3~ (50/60 Hz): [V] 400
Mains fuse 3~ (50/60 Hz): [A] 16
Positive mains tolerance 3~ (50/60 Hz): [%] 15
Negative mains tolerance 3~ (50/60 Hz): [%] 15
Mains plug
Mains plug: CEE 16
Standards and approvals
Protection class: IP23S
Insulation class: F
Norm/Standard: EN 60974-01
Designation/Certification: CE, S, EAC
Cooling type
Cooling type: Gas-cooled , Water-cooled
Standard cooling capacity (l/min): [kW] 1.06
Tank capacity: [l] 4.3
Dimensions length x width x height
Dimensions (LxWxH) [mm] 845 × 445 × 810
Dimensions wire feed case (LxWxH) [mm] 338 × 180 × 223
Weight: [kg] 82.8
Weight wire feeder case: [kg] 7.2
Weight, water cooling (filled): [kg] 14.7


  • “3 steps and weld” operating concept
  • Stepless current adjustment
  • Digital Volt-Amperage-display
  • Simple process and welding programme selection
  • Dynamic control (at Synergic, SpeedArcXT, SpeedPulse XT)
  • Tiptronic job memory for 100 welding tasks
  • Available as a remote version: individual selection of the operating option. In the power source, as a remote control control panel or both on demand

Always the best advice: close, personal and honest.

You are interested in a Lorch welding machine but you are not sure which model is the right one for you or you have other questions? Use our Partner Finder to easily find a competent contact person near you and get personal advice.