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Huisman

Huisman 400t Heavy Lift Crane

Name: Huisman Huisman 400t Heavy Lift Crane
Brand: Huisman
SKU: OSE-66916

Huisman Huisman 400t Heavy Lift Crane — Deck Cranes, Family: Huisman Heavy Lift, offshore.

400t SWL

Capacity

Inspector Detail

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Common issues

Broken wires or corrosion on the main hoist and luffing wire ropes
Hydraulic cylinder seal leakage on the luffing or hoist cylinders
Slew bearing wear or bolt loosening leading to increased backlash
Load pin and load cell calibration drift affecting the load moment indicator
Boom structural fatigue cracking at pin and lattice connections
Hoist and slew brake lining wear
Control system or load moment indicator faults from cabinet moisture ingress

Inspection checklist

Wire rope visual inspection for broken wires, corrosion and diameter reduction
Sheave and drum groove wear
Hydraulic hose, fitting and cylinder seal condition
Slew bearing bolt torque and backlash check
Load block and hook inspection, including NDT for cracking
Boom pin and bushing wear
Hoist and slew brake lining thickness
Load moment indicator and overload protection function test
Structural weld inspection on boom and pedestal
Emergency lowering/overcentre valve function test

Service intervals

Wire rope visual inspection	typically every 1-3 months in offshore service, with a thorough examination at least annually per applicable class and manufacturer requirements
Hydraulic oil sampling and filter change	typically every 3-6 months
Slew bearing lubrication	per the manufacturer's schedule, commonly monthly
Hook and load block NDT	typically annual
Proof/load test	typically every 4-5 years, tied to class survey requirements

Typical wear limits

Wire rope broken wire count	assess against the applicable rope discard criteria (e.g. ISO 4309 or the vessel's class rules) rather than a single generic number - discard criteria vary by rope construction and lay length
Slew bearing raceway/backlash wear	per the allowable backlash for this crane size - confirm against Huisman's own manual
Hoist brake lining thickness	renew before reaching the minimum lining thickness stated in the brake maintenance manual

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

Hoist and luffing wire rope of the correct diameter and construction
Hydraulic cylinder seal kits for the main hoist and luffing cylinders
Slew bearing (long-lead item)
Hoist and slew brake linings
Load pins, bushings and load cells
Load moment indicator sensor/control components

Safety

Suspended load and wire rope failure hazard
High-pressure hydraulic fluid injection injury during hose/fitting work
Crush points at the slew bearing and boom pin connections
Working at height on the boom and A-frame
Uncontrolled load lowering on hydraulic failure - overcentre/counterbalance valve function is safety-critical

Class survey

Offshore heavy lift cranes typically fall under Continuous Survey Machinery; class surveys commonly require wire rope certification, periodic NDT of load-bearing structural members and the hook/load block, load moment indicator calibration records, and a proof load test at the survey interval.

Estimated lifetime: Heavy offshore cranes of this SWL class are typically design-rated by load cycles and duty class rather than running hours; structural design life is commonly in the order of 20-25 years subject to ongoing inspection - confirm the specific design basis against Huisman's documentation for this crane.