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MacGregor

DC 10t/12m-C

Deck Crane · Deck Cranes

Class-certified type (DNV register) · technical data sheet not yet verified

MacGregor Deck Cranes. Electro-hydraulische Deckskräne für Schiffe mit Knuckle-Jib-Option (optional). Antrieb via geschlossenes Hydrauliksystem oder elektrisch (VFD). Hubkapazität 25-100 t (Standardlinien) bis >500 t (Heavy Lift). Knuckle-Boom-Konstruktion mit 360°-Rotation, stapelnde Bewegungen (Heben/Schwenken/Neigen). Typische Anwendung: Container-, Mehrzweck-, Massengut-Schiffe, Ladungsumschlag Hafen/Schiff. MacGreg Produktlinien: GL (Multipurpose Hydraulic), GLE (Multipurpose Electric), GLH (Heavy Lift Hydraulic), GLHE (Heavy Lift Electric), GLB (Bulker Hydraulic), GLBE (Bulker Electric), GLBS (Bulker Electro-Hydraulic), PK/BPK (Provision/Boat Cranes), HTC (Telescopic Knuckle Boom).

Specifications

Technical data.

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Lifting Capacity (t)10
Boom Reach (m)12
Inspection

Inspector Detail

Common issues

  • Hydraulic cylinder seal leakage on luff/hoist cylinders
  • Hoist wire rope wear, corrosion or broken wires reducing residual strength
  • Slew bearing wear/play causing excessive play or noise during slewing
  • Overload protection / load moment limiter calibration drift
  • Boom pin and bushing wear causing play in the boom linkage
  • Hydraulic hose deterioration in way of the boom and pedestal
  • Control valve block wear causing jerky or uncommanded movements
  • Corrosion at the pedestal base and boom root welds

Inspection checklist

  • Carry out the periodic thorough examination required for lifting appliances
  • Inspect hoist wire rope for broken wires, corrosion and diameter reduction against discard criteria
  • Pressure-test the hydraulic system and check for external leaks
  • Function-test the overload protection and limit switches at reduced load before relying on them
  • Check slew bearing bolts for correct torque and inspect for play
  • Inspect boom pins/bushings for wear and correct lubrication
  • Visually inspect structural welds at pedestal and boom root for cracking or corrosion
  • Test all crane movements (hoist, luff, slew) through full range
  • Test the hoist brake holds the rated load without drift
  • Confirm the crane's test certificate and load chart are on board and current

Service intervals

Annual thorough examination12 months
Dynamic load test (typically 1.1x SWL) per class/flag requirementevery 4-5 years - confirm exact interval with class/flag rules
Hydraulic oil sampling/changeper maker's PMS, commonly every 2,000-4,000 running hours or annually, whichever comes first
Wire rope detailed inspectionevery 3-6 months per PMS, replace per discard criteria
Slew bearing and boom pin lubricationper maker's schedule, often monthly

Typical wear limits

Hoist wire rope broken wiresdiscard criteria are set out in ISO 4309 (commonly cited threshold is around 6 randomly distributed broken wires in one lay) - confirm exact figures against ISO 4309 and the maker's manual for this crane
Wire rope diameter reductionbauartüblich discard guidance is roughly 7-10% loss of nominal diameter - confirm against ISO 4309 rather than treating this as exact

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

Critical spares

  • Hoist wire rope matching the original diameter and construction
  • Hydraulic cylinder seal kits for luff/hoist cylinders
  • Slew bearing (long lead time item - consider condition monitoring rather than holding as spare)
  • Control valve spool/seal kits
  • Hoist brake friction discs/linings
  • Boom pins and bushings

Safety

  • Suspended load / crush hazard during operation and testing
  • Hydraulic high-pressure fluid injection injury risk when working on cylinders/hoses
  • Wire rope failure under load - keep clear of the bight and load path
  • Working aloft on the boom for inspection
  • Risk of overload protection being defeated or bypassed - never operate with it disabled

Class survey

Deck cranes are surveyed as lifting appliances under class/flag rules - periodic thorough examination and dynamic load testing, with a test certificate and register of lifting appliances kept on board. Overload protection function is normally checked as part of the periodic survey.

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