Fiber laser cutting machine LF4020GH

for steelfor thick sheet metalfor metal sheets

Product overview
Large-format fiber laser cutter LF4020GH from the GH series. Power options from 8 kW to 60 kW for long-length and thick-sheet processing up to 12 m in a single pass, designed for industrial heavy-sheet cutting and large components.

Enhanced processing capability for thick sheets
Capable of whole-sheet cutting up to 12 m length. Improved dynamic performance delivers higher cutting speed and increased cutting capacity on thick materials.

Mortise and rivet welded bed
The bed is built from super-heavy steel plates with mortise-and-rivet welding, stress-relief annealing, internal reinforcement ribs and transverse tube support, ensuring high rigidity and long-term stability.

Matrix exhaust structure
Double-row, multi-line independent high-sealing partition smoke exhaust effectively filters harmful gases, smoke and dust to improve the environmental performance of the production process.

Bus system and bus motor
EtherCAT bus system with bus motors enables real-time adjustment, efficient coordination and straightforward deployment.

Key functions

• Air pressure DA correction — Ensures auxiliary gas pressure accurately reaches the set value.
• Intelligent head retraction — Automatically adjusts head retraction pressure for smooth movement.
• Perforation slag removal — Rapid slag clearing after piercing to improve quality and productivity.
• Traceless micro-jointing — Minimal connection points for seamless batch cutting.
• Visual anti-collision — Vision-based detection stops cutting when personnel enter the processing area and issues alerts to protect machine operation safety.
• Automatic nozzle replacement — Automatic nozzle changes to support automated continuous processing.

Sample display & applications
Sample images and industry application illustrations are provided to demonstrate processing examples and typical use cases across sectors such as shipbuilding, steel structures, agricultural machinery and heavy equipment.

Technical parameters
Models: LF4020GH | LF6025GH | LF12025GH
Working area: 4050 mm × 2030 mm | 6050 mm × 2530 mm | 12500 mm × 2550 mm
Laser power (optional): 60000W/40000W/30000W/20000W/15000W/12000W/8000W
Dimensions: 11320 × 3690 × 2860 mm | 15554 × 4345 × 2705 mm | 27980 × 4345 × 2705 mm
X/Y axis positioning accuracy: ±0.03 mm
X/Y axis repeat positioning accuracy: ±0.02 mm
Maximum speed: 150–220 m/min
Maximum acceleration: 1.5G–2.5G

Features / technical specifications

• Model: LF4020GH
• Series: GH Series
• Working area: 4050 mm × 2030 mm
• Optional laser power: 8 kW to 60 kW (8000W/12000W/15000W/20000W/30000W/40000W/60000W)
• Machine dimensions: 11320 × 3690 × 2860 mm
• X/Y axis positioning accuracy: ±0.03 mm; repeatability: ±0.02 mm
• Maximum speed: 150–220 m/min; maximum acceleration: 1.5G–2.5G
• Bed construction: Mortise-and-rivet welded super-heavy steel with stress-relief annealing and internal reinforcement ribs
• Exhaust: Double-row, multi-line independent high-sealing partition smoke exhaust
• Control: EtherCAT bus system with bus motors for real-time adjustment
• Automated functions: Air pressure DA correction, intelligent head retraction, perforation slag removal, traceless micro-jointing, visual anti-collision, automatic nozzle replacement