Lorch S8 SpeedPulse XT MIG-MAG Pulse Welding Machine
500 A pulse MIG-MAG machine from the Lorch S series
The Lorch S8 SpeedPulse XT is the largest model in the Lorch S series, with a MIG-MAG welding range of 25 A to 500 A. It runs the Lorch SpeedPulse XT process as standard, together with TwinPuls XT, SpeedArc XT, Pulse and synergic standard MIG-MAG programs. Electrode welding is available on all S series systems, and TIG with ContacTIG ignition is part of the equipment list.
Lorch describes SpeedPulse XT as a pulse arc whose control reacts quickly in every pulse phase, so the welder can influence the arc by changing the distance between torch and workpiece. The S series operates with both mixed gas and CO₂.
S8 SpeedPulse XT technical data
The table lists the S8 column of the Lorch S series datasheet. Weights apply to the separate parts of the system.
| Parameter | Specification |
|---|---|
| Manufacturer | Lorch Schweißtechnik GmbH |
| Model | S8 SpeedPulse XT |
| MIG-MAG welding range | 25 A to 500 A |
| Voltage setting | Infinitely variable |
| Duty cycle at 40 °C | 400 A at 100%; 500 A at 60% |
| Duty cycle at max. current | 60% |
| Wire feed unit | 4 rolls, 2 driven |
| Weldable steel wire | 0.6 mm to 1.6 mm |
| Mains | 3~ 400 V, 50/60 Hz, ±15% tolerance |
| Mains plug | CEE 32 |
| Power source dimensions L x W x H | 1116 x 463 x 812 mm (A version); 1116 x 445 x 855 mm (B version) |
| Weight, power source A version, gas-cooled | 107.3 kg |
| Weight, wire feed case | 20.2 kg |
| Weight, water cooling (filled) | 14.7 kg |
| Standard / protection class | EN 60974-1 / IP23S |
| Insulation class / marking | F / CE, S |
Operation and process options
The XT control uses Lorch’s three-steps-to-weld concept: select the process and synergic line, set the current and weld. Dynamic control lets the welder set the arc from soft to hard for Synergic, SpeedArc XT and SpeedPulse XT. Arc length can be set separately for the start, welding and end phases, and the Tiptronic memory stores 100 welding jobs that can be recalled at the machine or from a Powermaster torch.
SpeedRoot, SpeedCold and SpeedUp are optional process upgrades. The standard cooling unit is rated at 1.1 kW; with the separate wire feeder (B) version, Lorch offers boosted 1.5 kW cooling and a version with a larger pump for long interconnection hose packages of 20 m and over.
Choosing the right S8 configuration
Lorch builds the S series as a compact system with integrated wire feeder (A), a separate wire feeder system (B), and double-feeder versions (AB and BB). Choose B when the welder needs to work away from the power source; Lorch quotes a working range of up to 25 m with the hose package. All wire feeder systems come with a 1 m interconnection hose package; longer lengths are options.
The installation needs a three-phase 400 V supply with a CEE 32 socket. For continuous production welding, size the job against the 400 A rating at 100% duty cycle.
Documents and quotation
The attached Lorch datasheet covers all S series SpeedPulse XT models. When you request a quotation, state the version (A, B, AB or BB), gas or water cooling, hose package length, torch, wire material and diameter, and any optional process upgrades. Browse MIG/MAG Welding Machines for related equipment.
- Datasheet Lorch S series technical data sheet (EN) Download
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