LGK-160: 160A IGBT Inverter Air Plasma Cutter — Industrial CNC Plasma Cutting System
LGK-160
160A Industrial Plasma Cutting System
Part of the Plasma Cutters product line. Designed and manufactured in Qingdao, China with IGBT inverter technology for reliable industrial performance. CE certified for global export.
Typical Applications: 55mm cut, foundry, heavy machinery
LGK-160 Air Plasma Cutter
The LGK-160 is the flagship model of the LGK series, delivering 160 amps of cutting power for the heaviest industrial plasma cutting applications. With a quality cut capacity of 55 mm on mild steel and a maximum severance of 80 mm, it tackles plate thicknesses that would otherwise require oxy-fuel or mechanical cutting. A 100% duty cycle at the full 160A / 144V rated output means the machine can run continuously without any cool-down period — a critical requirement for foundry riser removal, steel mill slab cutting, and multi-shift heavy fabrication operations where downtime is measured in lost tonnes of throughput.
At 40 kg, the LGK-160 is the heaviest machine in the series, reflecting its industrial-grade construction: a reinforced steel chassis with lifting eyes for overhead crane handling, a three-phase 24 kVA IGBT inverter section with four parallel power modules, and a PT-160 water-cooled torch option for extended cutting at maximum amperage. The no-load voltage of 360V ensures instant pilot arc transfer on the thickest, most heavily mill-scaled plate. Like all LGK machines, it includes a standard CNC interface, but the LGK-160 adds an RS-485 serial communication port for integration with automated cutting lines and production management systems.
Detailed Specs — LGK-160
| Parameter | Specification |
|---|---|
| Model | LGK-160 |
| Rated Input Voltage (V) | AC 380V +/- 15% |
| Phase | Three-Phase |
| Frequency (Hz) | 50 / 60 |
| Rated Input Power (kVA) | 24.0 |
| Rated Output Current (A) | 160 |
| Output Current Range (A) | 40 – 160 |
| No-Load Voltage (V) | 360 |
| Rated Load Voltage (V) | 144 |
| Rated Duty Cycle | 100% @ 160A / 144V (40degC) |
| Max Cutting Thickness – Quality (mm) | 55 |
| Max Cutting Thickness – Severance (mm) | 80 |
| Plasma Gas | Compressed Air (0.55 – 0.75 MPa) |
| Air Flow Requirement (L/min) | 300 or above |
| Arc Starting Method | High-Frequency Pilot Arc |
| Insulation Class | H (180degC) |
| Protection Class (IP) | IP22S |
| Power Factor (cos phi) | 0.93 or above |
| Efficiency (%) | 87 or above |
| Dimensions L x W x H (mm) | 700 x 360 x 540 |
| Net Weight (kg) | 40 |
| Built-in Compressor Option | No |
| CNC Interface | Standard + RS-485 serial port |
| Torch Type | PT-160 (air) / PTW-160 (water-cooled option) |
| Cooling Method | Forced Air (Triple Fan) + Optional Water Cooling |
| Certification | CE (CSA, EAC available) |
Where the LGK-160 Excels
Foundry Riser Removal
Rapid severance of casting risers, gates, and runners from large steel and iron castings. The 100% duty cycle supports continuous cutting across entire heat batches without thermal shutdown.
Steel Mill Maintenance
Cutting mill liners, chute plates, and slag runners from abrasion-resistant plate up to 55 mm. Water-cooled torch option enables sustained cutting at maximum amperage in hot mill environments.
Shipbreaking & Heavy Demolition
Dismantling of hull plates, bulkheads, and structural members up to 80 mm thick. Pilot arc cuts through multiple layers of paint, rust, and marine growth without pre-cleaning.
Heavy Machinery OEM
CNC cutting of press frames, die sets, and large machinery weldments from plate up to 55 mm. The 160A output delivers travel speeds 30% faster than 120A machines on 40 mm plate.
Infrastructure Projects
Cutting of thick structural sections for bridge bearings, dam gate components, and lock gate fabrications. Reliable arc transfer on primed and weathered structural plate.
Automated Cutting Lines
RS-485 serial communication enables integration with factory MES and SCADA systems. Remote current setting, arc-on monitoring, and consumable life tracking from a central control station.
LGK Series — Amperage Comparison
| Parameter | LGK-60 | LGK-80 | LGK-100 | LGK-120 | LGK-160 |
|---|---|---|---|---|---|
| Rated Current (A) | 60 | 80 | 100 | 120 | 160 |
| Input Voltage (V) | 220V 1-Phase | 220/380V | 380V 3-Phase | 380V 3-Phase | 380V 3-Phase |
| Quality Cut (mm) | 15 | 25 | 35 | 45 | 55 |
| Max Severance (mm) | 25 | 35 | 50 | 60 | 80 |
| Duty Cycle | 60% @ 60A | 60% @ 80A | 80% @ 100A | 80% @ 120A | 100% @ 160A |
| Weight (kg) | 8 | 12 | 18 | 25 | 40 |
| Torch Cooling | Air | Air | Air | Air | Air / Water Option |
| Best For | Light fab, HVAC, mobile | Medium fab, shops | Structural, shipyard | Heavy plate, mining | Foundry, heavy industry |
Why Choose the LGK-160
100% Duty Cycle at 160A
The only machine in the LGK series capable of continuous operation at full rated output. Zero cool-down required — critical for production lines, foundry applications, and automated cutting cells where every minute of downtime costs real throughput.
Water-Cooled Torch Option
The PTW-160 water-cooled torch option uses a closed-loop recirculating coolant system to keep torch head temperatures below 80 degrees C even during sustained 160A cutting. Extends consumable life by 40 to 60 percent in heavy production environments.
RS-485 Industrial Communication
Built-in RS-485 serial port enables remote monitoring and control from factory automation systems. Parameters such as cutting current, arc voltage, air pressure, and consumable life counters can be read and set via MODBUS protocol from a central PLC or SCADA system.
Class H Insulation (180 degrees C)
Transformer and inductor windings use Class H insulation rated for continuous operation at 180 degrees C — one full thermal class above the rest of the series. This provides an additional safety margin in foundry and steel mill environments where ambient temperatures frequently exceed 45 degrees C.
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