| 摘要 |
A thrust bearing assembly especially adaptable for use with a centrifugal pump and located between the impeller and the impeller driving means and constructed of multiple bearings, each of which is preloaded to a certain value such that under conditions of no upwardly directed thrust load, the upper and lower bearings share a load applied to the upper bearing while a middle bearing is subject only to its preload, and under upwardly directed thrust load conditions, the upper and middle bearings share the upwardly directed thrust load while the lower bearing carries its preload. |
