Guide bearing probability load theory of large vertical pump

The factors are analyzed in this paper that influence the guide bearing load of a large vertical pump from structures; errors of design, manufacture, construction and installation of pump unit and assembly. The error randomicity results in the bearing load randomicity. The probability load theory of the guide bearing is established for the first time. Solving methods of the model and characteristics of the bearing probability load are studied. The guiding bearing design load is recommended. The results mean much to rational design, load decrease and increase of service life of the guide bearing.