Experimental research on water lubricated three layer sliding bearing with lubrication grooves in the upper part of the bush and its comparison with a rubber bearing. (February 2015)

• Record Type: Journal Article
• Authors: Litwin, Wojciech
• Is Part Of: Tribology international. Volume 82(2015)Part A
• Page Start: 153
• Page End: 161
• Publication Date: 2015-02
• Subjects: Water lubricated bearings -- Propeller shaft bearings -- Marine bearings -- Hydrodynamic lubrication; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2014.10.002
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: One of the more interesting, currently available water lubricated bearing materials is a three layer composite. Each of its layers has an important function. Specially prepared sliding surface ensures minimum resistance. Following running-in its smoothness becomes very high and the bearing may continue working under fluid lubrication regime. NBR layer ensures bearing elasticity, good vibration damping properties and insusceptibility to shaft axis misalignment. The external brass layer makes fitting the bearing easier. Experiment results of the conducted research were compared with those for a rubber bearing of similar geometry. Highlights: Two water lubricated bearings in real scale were experimentally tested and compared. Conditions during tests were typical for marine bearings and water turbine bearings. Hydrodynamic lubrication occurred, three-layer bearing has good tribological properties. Bearings were tested in limited lubrication conditions, NBR bearing nearly seized. Starting friction of NBR bearing strongly depends on brake time period.