Abstract: Taking the replacement of an elastic disk-supported thrust bearing as an example, aimed at the deviation in its installation and adjustment, by constructing the coupling equations of the key parameters, such as structural stress, oil film thickness and so on, the robustness of the relevant parameters is solved.It is pointed out that the deviation of lubricant film of thrust bearing is much less than that of structural adjustment in a certain range and it is proportional to the rigidity coefficient of supporting structure. Based on the above analysis, this paper further discusses the basic principles of installation and adjustment of the elastic bearing type thrust bearing, which has reference significance for the installation and adjustment of the various bearing types thrust bearing.

Key words: hydrogenerator, thrust bearing, robustness, adjustment, oil film