Abstract
The stern bearing of the inner shaft of a contra-rotating propeller rotates itself in a direction opposite that of the inner shaft, thus the conventional plain bearing has a disadvantage in that load carrying capacity based on the hydrodynamic pressure generation is not sufficiently large. A floating bush bearing and a newly designed hydrostatic bearing with pressurized oil supplied through the inner shaft are selected and compared in terms of load carrying capacity and reliability under misalignment conditions. It followed that the newly designed hydrostatic bearing is promising for CRP applications where large relative inclination between shaft and bearing possibly occurs, because it has several axially spaced rows of hydrostatic recesses and can produce high aligning capability.
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