Deck Crane · Deck Cranes
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| Hydraulic oil sample analysis | every 2000 running hours or annually |
|---|---|
| Hydraulic filter replacement | every 500-1000 hours or per differential pressure indicator |
| Wire rope detailed inspection | every 3 months, with monthly visual checks |
| Wire rope replacement | condition-based, typically 3-5 years depending on duty cycle |
| Slew ring and gear lubrication | weekly to monthly per manufacturer's lubrication chart |
| Proof load test | annually or per class/flag requirement |
| Full crane survey/overhaul | every 4-5 years, aligned with class special survey |
| Wire rope diameter reduction | discard typically at 7-10% reduction from nominal - confirm against class/manufacturer's rope discard criteria |
|---|---|
| Wire rope broken wires | discard criteria typically 6 broken wires in one lay or 3 in one strand - confirm against ISO 4309 or manufacturer's standard |
| Slew ring bearing play | manufacturer-specific tolerance, generally a few tenths of a mm before action - confirm against manufacturer's table |
| Brake lining thickness | condition-based renewal before base material contact - confirm manufacturer's minimum |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Cargo cranes fall under Lifting Appliances survey requirements - annual thorough examination and periodic proof load test (typically every 4-5 years or per flag/class rules), with load test records, NDT of critical structural areas and wire rope condition kept in the ship's lifting appliance register.
Estimated lifetime: Structure and slew ring generally rated for the vessel's service life (20-25 years) with periodic component overhaul; hydraulic pumps/motors typically 20,000-40,000 hours between major overhaul depending on duty cycle - confirm against manufacturer's maintenance manual
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