Towing Winch · Towing Equipment
PALFINGER Marine Anchor Handling and Towing (AHT) Winch — Anchor handling and towing operations on AHT and AHTS vessels; custom-built and tightly integrated into vessel structure; double or triple drum in waterfall or side-by-side configuration; optional chain pulling variants, chain rollers, secondary winches.
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| Wire rope inspection | per the rope maker/class guidance, commonly monthly for heavy anchor-handling duty |
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| Wire rope renewal | condition-based against the applicable discard criteria, not a fixed calendar interval |
| Brake lining inspection | every few hundred operating hours or per the maker's schedule, more often under heavy dynamic braking use |
| Gearbox oil analysis/change | per the maker's schedule, commonly annual or hours-based |
| Load monitoring calibration check | at each class survey or annually |
| Wire rope discard criteria | commonly assessed against a recognized rope discard standard (broken wire counts over a given rope-lay length, or a percentage diameter reduction from nominal) - confirm against the specific standard applied and the rope maker's guidance rather than a fixed figure here |
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| Brake lining thickness | commonly renewed once thickness is reduced by a significant fraction of the new-lining thickness - confirm the exact figure against PALFINGER's brake maintenance manual |
| Rated pull vs measured performance | rated pull is 150-500 t on the first layer per the specification on file; a load test showing a meaningful shortfall against this figure is a limit reached, warranting investigation before further heavy-load use |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
AHT winches typically require periodic load or proof testing at intervals set by class rules, with brake holding capacity verification as a specific survey item; wire rope certification records must be maintained and available to the surveyor at each relevant survey.
Estimated lifetime: The winch structure and gearbox are commonly rated for the vessel's operating life given periodic wire, brake lining and seal renewal; there is no single running-hour figure for the unit as a whole - wire rope and brake linings are consumable items on their own condition-based renewal schedule.
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