LHM 420 Mobile Harbour Crane
The design of the LHM 420 has been optimised for ships in the Post-Panamax class. The Liebherr mobile harbour crane series raises and lowers loads at up to 120 metres per minute. The LHM 420 has a maximum load capacity of 124 tonnes and handles up to 38 containers per hour with its hybrid drive. The versatile crane is also suitable for the efficient handling of bulk cargoes, as well as the safe transportation of general cargoes.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Visual daily inspection per ISO 4309:2017; caliper for diameter; magnetic inductive inspection (MRI) for suspected internal damage; inspection points: drum anchorage, loading, deflection over sheaves, loaded rope sections
Visual inspection for lubricant leakage; check seals for wear and contamination; vibration and temperature monitoring; overhaul by qualified Liebherr service with specialized equipment if needed
Drucktest (Pressure Test) gegen spezifizierte Solldrücke; Sichtprüfung auf Flüssigkeitsverluste; Ölprobenanalyse (Condition Monitoring); Funktionsprüfung aller Hubfunktionen (Heben, Schwenken, Luffing)
Visual surface inspection for surface cracks and deformation; NDT inspection (X-ray/MRI) at critical hooks for internal damage; load test: ~25% above rated load capacity; inspection of hook locking and wear marks
Surface rust and corrosion by visual inspection; NDT inspection (ultrasonic, X-ray) at critical welds; dimensional check of geometric tolerances; overhaul by Service Centre Steel with welding/structural analysis if required
Visual inspection of all electrical connections for corrosion in saltwater environment; functional test of overload protection and indicators; continuity test of critical circuits; lithium battery/accumulator condition check on electro-hydraulic systems
Type-general inspection and maintenance points for this equipment category — not model-specific.
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