SLEWING SEAL ARRANGEMENT FOR A PROPULSION UNIT

摘要

Slewing seal arrangement for a propulsion unit. The propulsion unit comprises a strut having an upper portion (22) with an upper end portion (100) passing through a passage (P1) formed between a first outer bottom (11) and a second inner bottom (12) in a vessel 10. The upper end portion(100) is rotatable supported (Y-Y) with a slewing bearing (300) and sealed with a slewing seal (200). An upper slewing seal (210) prevents lubrication medium leakage from the slewing bearing (300), whereby access to the upper slewing seal (210) is provided in a radial direction (R1) from the interior of the vessel (10) or from the interior of the strut (21) in order to be able to service the upper slewing seal (210). A lower slewing seal (220) is positioned at a vertical distance (H1) below the upper slewing seal (210) and prevents sea water from penetrating into the hull of the vessel (10), whereby access to the lower slewing seal (210) is provided in a radial direction (R1) from the interior of the vessel (10) or from the interior of the strut (21) in order to be able to service the lower slewing seal (220).