Water-lubricated bearings of ship propeller shafts - problems, experimental tests and theoretical investigations

• Autorzy: Litwin W.
• Języki publikacji: EN

Abstrakty

EN

In recent years can be met ships whose propeller shaft polymer bearings are lubricated with water. It results from simplicity and associated low cost of such solution which is also environmentally friendly as no risk of pollution is involved. However the solution is not free of disadvantages. The main problem is intensive wear of bush material, occurring in certain cases. It very often results from errors of improper design and machining and mounting operations. Another problem is a limited value of its hydrodynamic load-carrying capacity, resulting from low viscosity of water used as a lubricating medium. As results from the performed research investigations, bearing of the kind is a highly sensitive unit. Problems of choosing a suitable bearing clearance, designing an optimum bush geometry, selecting a proper bush material are crucial for lifitime of the bearing.

Słowa kluczowe

EN

bearing; water-lubricated bearings; propeller shaft bearing

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2009
• Tom: nr 4
• Strony: 42--50
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Litwin W.

• Faculty of Ocean Engineering and Ship Technology Gdansk University of Technology Narutowicza 11/12 80-952 Gdansk, POLAND,

Bibliografia

• 1. Lloyd’s Register: List of materials approved for application to water-lubricated shaftline bushes on ships (in Polish)
• 2. Olszewski A.: Ceramic transverse bearing of conformal sliding surfaces (in Polish). Doctoral thesis, Mechanical Faculty, Gdańsk University of Technology, 2002
• 3. Dymarski C., Litwin W.: An experiment-based attempt to assessment of influence of surface roughness on operation of hydrodynamic water-lubricated bearing fitted with polymer bush (in Polish). The Conference „ Inżynieria Łożyskowania 2007 ” (Bearing Engineering 2007),Tribologia, 2007
• 4. Dymarski C., Litwin W.: Influence of surface roughness of bearing bush on properties of water lubricated main shaft bearings – experimental tests. Conference NORDTRIB 2008, Tampere, Finland, 2008
• 5. Litwin W.: Calculations of water lubricated main shaft bearings – EHL model. Conference NORDTRIB 2008, Tampere, Finland, 2008
• 6. Litwin W.: The test stands for water lubricated marine main shaft bearings. NORDTRIB 2006, Helsingor, Denmark, 2006
• 7. Litwin W., Dymarski Cz.: Influence of surface roughness of bearing bush on properties of water lubricated main shaft bearings – experimental tests. Conference NORDTRIB 2008, Tampere, Finland, 2008