Repozytorium publikacji - Politechnika Gdańska

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Repozytorium publikacji
Politechniki Gdańskiej

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Experimental research on water lubricated marine stern tube bearings in conditions of improper lubrication and cooling causing rapid bush wear

Water lubricated bearings are popular in sliding bearings of marine propeller shafts, turbines and pump shafts. Such popularity is partly due to their simple construction which also means a relatively affordable price. In practical experience one may also observe cases of rapid wear or even malfunctions of this bearings, some of which may be caused by insufficient flow of lubricant leading to overheating. The conducted research determined that certain bearings continue to work properly despite lack of lubricant flow and cooling. This is due to low motion resistance levels resulting low friction so heat generated in the friction zone of such bearings is sufficiently low to be dispersed into surroundings once bearing temperature rises and stabilizes at a safe level.

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