Tunnel Thruster · Bow/Stern Thrusters
Crew members, engineers, and operators on board rely heavily on equipment like the Brunvoll AS FU80 for efficient and reliable operations. This marine propulsion system, certified to DNV standards, ensures smooth sailing under various conditions. Regular maintenance is crucial to avoid common failures such as gear oil leakage due to worn seals after 15,000 to 20,000 hours of operation, propeller blade erosion from cavitation, hydraulic motor leaks in hydraulic variants, and electrical motor insulation degradation by moisture. To keep the system running smoothly, crew should perform a gear oil analysis every 1,000 hours, conduct an annual motor insulation test, inspect the propeller during dockings, and check tunnel grilles for any damage. Replacement parts can be sourced directly from Brunvoll AS with a lead time of 3 to 6 weeks.
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“Brunvoll Tunnel Thrusters are designed for the most demanding requirements according to North Sea offshore standards, and are used on all types of ships.”
What our service work and the manufacturer documentation say about keeping this model running.
Gear oil analysis every 1,000 hours. Motor insulation test annually. Propeller inspection at drydock. Check tunnel grating at drydock.
Brunvoll AS: Getriebeöl und Dichtungen an Bord. Lead time: 3-6 Wochen.
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