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Hatlapa

EMW-250kN

Mooring Winch · Anchor & Mooring Equipment

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

Hatlapa EMW-250kN — Anchor & Mooring Equipment.

Specifications

Technical data.reference — unverified

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

Pull Force (kN)250
TypeElectric Mooring Winch
Inspection

Inspector Detail

Common issues

  • Electric drive motor overheating/tripping under sustained high-load mooring operations
  • Brake motor (fail-safe spring brake) wear reducing holding torque
  • Gearbox oil leakage at input/output shaft seals
  • Drum clutch engagement wear causing slip under load
  • Control contactor/relay wear in the winch control panel
  • Spooling problems from worn drum flanges or spooling gear

Inspection checklist

  • Insulation resistance test on the drive motor
  • Check brake motor holding torque and spring brake release/engage function
  • Inspect gearbox oil level/condition and check for leaks
  • Verify the drum clutch engages fully and does not slip under test load
  • Check control panel contactors, overloads and emergency stop function
  • Inspect drum, warping head and fairleads for wear or sharp edges
  • Check foundation bolts and deck seating

Service intervals

Gearbox oil changetypically annually per manufacturer schedule
Brake motor spring/lining inspectionannually
Motor insulation resistance testannually
Control panel inspection (contactors, overloads)annually
Grease drum bearings and clutch mechanismper PMS, commonly every 1-3 months

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Brake/clutch friction materialrenew once wear noticeably reduces the holding margin seen in the periodic load test - confirm exact tolerances against the Hatlapa manual

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

Critical spares

  • Brake motor spring/brake lining kit
  • Gearbox shaft seals
  • Drum clutch friction plates
  • Motor contactor/overload relay
  • Gearbox bearing set

Safety

  • The fail-safe brake must hold the rated load with power off - test this specifically, not just under power
  • Rotating drum and warping head are a crush/entanglement hazard during mooring operations
  • Snap-back zone if a mooring line parts under load
  • Electrical hazard at motor/control panel during maintenance - isolate and lock out before opening

Class survey

Mooring winches are surveyed as part of deck machinery under class rules; surveyors verify brake holding test results, SWL marking, and that electrical protection (overload, emergency stop) functions correctly.

Estimated lifetime: Typically designed for 20-25 years of vessel service life; motor and gearbox overhaul intervals depend on duty cycle (number of mooring operations) rather than a fixed hour figure.

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