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LGK-125AM Built-in Air Compressor Plasma Cutter

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LGK-125AM Built-in Air Compressor Plasma Cutter

LGK-125AM Built-in Air Compressor Plasma Cutter

Built-in Air Compressor Plasma

The LGK-125AM combines welding and cutting with a built-in air compressor to form a mobile plasma cutting workstation. The internal air source or an external supply can be selected as required, and the machine is easy to move, which suits outdoor manual cutting where no compressed air exists. The built-in 1500 W high-pressure compressor eliminates the need for an external air supply on outdoor sites. Driven by a four-stage low-speed motor, the compressor piston lasts longer at the same air output and the unit runs more stably and durably. Anti-vibration mounts damp the shock of operation and relocation, lowering the risk of internal components loosening, reducing noise and extending compressor service life. A high-quality pressure-regulating filter provides fine filtration with stable, reliable regulation. Mature current ripple control technology delivers flat, clean cut faces, and the main circuit's two large 1000 µF / 400 V filter capacitors give the machine strong resistance to supply fluctuation, so it also performs steadily on generator power. Protection is comprehensive: over-temperature protection, compressor phase-loss protection, and over-voltage / under-voltage protection. Applications Manual cutting of carbon steel, alloy steel and non-ferrous metals. Widely used for pipelines, steel structures and power-plant installation, outdoor electromechanical equipment repair, metal demolition and recycling, and other non-fixed, frequently relocated sites. Not recommended for fixed indoor installations.

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Key Features

  • Built-in 1500 W high-pressure compressor: no external compressed air required
  • Cutting and manual arc welding combined in one mobile unit
  • Switchable between internal air source and external supply
  • Four-stage low-speed motor drive for longer piston life and quieter operation
  • Anti-vibration compressor mounts reducing shock, noise and component loosening
  • High-precision pressure-regulating filter with fine filtration and stable regulation
  • Two 1000 µF / 400 V filter capacitors: strong supply-fluctuation immunity, generator compatible
  • Over-temperature, compressor phase-loss and over-voltage / under-voltage protection

Typical Applications

  • Pipeline, steel structure and power-plant installation sites
  • Outdoor equipment repair and emergency maintenance
  • Metal demolition, rescue and recycling dismantling
  • Mobile jobs without a compressed-air supply
  • Remote construction and infrastructure maintenance

Selection & Setup Notes

The 125AM raises output current over the 105AM for duties that need mobility plus slightly thicker plate. It is positioned as a mobile station: for high-intensity continuous production at a fixed station, a conventional source on external air is still preferable — see inverter air plasma cutters.

Standards & Further Reading

External reference: ISO 9013 — Thermal cutting classification — ISO 9013 defines the quality classes for thermal cut surfaces (perpendicularity, bevel, dross).

Frequently Asked Questions

How do I choose between it and the 105AM?

Judge by thickness and mobility: the 125AM for thicker plate and heavier use, the 105AM for thin sheet and occasional repair.

Will it run on generator power?

Yes — the mains-tolerant main circuit works on generator supply, but generator capacity must still be checked.

Is switching between cutting and welding awkward?

No — the two output circuits are independent and switch from the panel. Cutting and then welding on the spot is the whole point.

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