The Liebherr LHM 420 is a versatile mobile harbour crane engineered to efficiently handle various types of cargo, including containers, bulk materials, and general goods. Optimized for servicing Post-Panamax class vessels, it offers a blend of performance, flexibility, and environmental considerations.
Key Features and Specifications:
- Impressive Lifting Capacity: The LHM 420 boasts a maximum lifting capacity of 124 tonnes, enabling it to manage heavy loads with ease.
- Extended Reach: Equipped with a jib length of 48 meters, the crane can efficiently service vessels with widths up to 22 rows of containers, accommodating a range from feeder ships to Ultra Large Container Vessels (ULCV).
- High Operational Speeds: Capable of hoisting and lowering at speeds up to 120 meters per minute, the LHM 420 enhances productivity by reducing cycle times.
- Hybrid Drive System: Incorporating a hybrid drive, the crane can handle up to 38 containers per hour, improving efficiency while reducing fuel consumption and emissions.
- Advanced Mobility: The undercarriage design allows for movement in all directions, providing 360-degree mobility. This feature enables the crane to navigate confined port spaces effectively.
- Eco-Friendly Engine Compliance: The LHM 420 is equipped with engines that meet the latest EU Stage V and EPA Tier 5 final emission standards, reflecting Liebherr’s commitment to environmental sustainability.
- Ergonomic Operator’s Cab: Designed with noise protection, air conditioning, and ergonomic controls, the cab enhances operator comfort, leading to increased concentration and reduced fatigue during operations.
- Safety Enhancements: The crane includes multiple safety devices aimed at protecting personnel, infrastructure, and the environment, underscoring Liebherr’s emphasis on operational safety.
In summary, the Liebherr LHM 420 mobile harbour crane combines substantial lifting capabilities with advanced technological features and environmental compliance, making it a reliable and efficient solution for modern port operations.
Harbor Crane Inspections
When inspecting a used Liebherr LHM 420 mobile harbor crane, it’s crucial to evaluate its structural integrity, mechanical performance, hydraulic systems, electrical components, and overall condition to ensure safe and efficient operation. Here’s a comprehensive checklist to guide your inspection:
1. Structural & Visual Inspection
✅ Boom & Jib Condition:
- Check for cracks, dents, or signs of metal fatigue on the boom and jib.
- Inspect weld seams for any signs of wear or damage.
✅ Undercarriage & Chassis:
- Examine the tires, axles, and wheel components for damage or excessive wear.
- Test the hydraulic walking system for smooth movement.
✅ Counterweights & Stability Components:
- Ensure counterweights are properly mounted and free of damage.
- Check for signs of rust or corrosion on exposed metal surfaces.
✅ Paint & Corrosion Protection:
- Look for paint peeling or rust, especially in high-exposure areas like the boom and undercarriage.
2. Mechanical & Hydraulic Systems
✅ Hydraulic Cylinders & Hoses:
- Inspect all hoses, seals, and cylinders for leaks, cracks, or pressure loss.
- Check for smooth operation when extending or retracting hydraulic arms.
✅ Pump & Motor Condition:
- Test the hydraulic pump pressure to ensure optimal performance.
- Listen for unusual noises from the hydraulic motors, which could indicate internal wear.
✅ Winches & Hoisting Mechanism:
- Examine the hoist drum, cables, and sheaves for fraying, rust, or uneven wear.
- Check the braking system for proper function when lifting and lowering loads.
✅ Slewing System:
- Ensure the slewing ring gears are properly lubricated and free of damage.
- Rotate the crane to detect excessive play or stiffness in the movement.
3. Electrical & Control Systems
✅ Control Panel & Software:
- Test the Liebherr Litronic system for any error codes or malfunctions.
- Verify that all display screens, sensors, and automation functions are operational.
✅ Wiring & Electrical Components:
- Inspect all wiring connections for corrosion or exposed wires.
- Test lighting, alarms, and safety indicators to confirm they work properly.
✅ Operator’s Cab & Ergonomics:
- Check joysticks, pedals, and control switches for responsiveness.
- Inspect seat adjustment, visibility, and air conditioning for operator comfort.
4. Performance & Load Testing
✅ Load Lifting & Lowering Tests:
- Perform test lifts with different weights to ensure smooth lifting and lowering.
- Monitor for hydraulic pressure fluctuations or brake slippage.
✅ Swing, Travel & Braking Tests:
- Move the crane in different directions to ensure stability and control.
- Test the swing system for any abnormal resistance or noise.
✅ Fuel & Emission Compliance:
- Verify that the engine meets current EU Stage V or Tier 5 emissions standards.
- Inspect the diesel engine or hybrid system for fuel efficiency and exhaust output.
5. Maintenance & Service Records
✅ Review Logbook & Service History:
- Check for regular maintenance, oil changes, and part replacements.
- Look for past accident reports or major repairs that could affect performance.
✅ Spare Parts Availability & Warranty:
- Ensure that critical spare parts are available for ongoing maintenance.
- Confirm if any manufacturer warranty or service agreement is still valid.
Final Thoughts
A well-maintained Liebherr LHM 420 can provide years of reliable service. If possible, conduct the inspection with a certified Liebherr technician and run a full diagnostic scan to check internal systems before finalizing the purchase.
Would you like recommendations on where to find used LHM 420 models for sale? Would you need an independent expert service to inspect such a machine? Mevas inspectors are available in more than 25 countries.
Port Crane Inspection Checklist
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