Abstract: In this paper the analysis and experimental investigation of a hole-entry hybrid bearing have been studied in more detail. According to the mechanism and mathematic model of a holt-entry bearing, the calculating formulation has been derived and the static and dynamic analysis and optimum design programs have been worked out, running on the microcomputer such as IBM-PC/AT&XT and so on. An interface between FORTRAN and Auto CAD has been set up, so that a whole CAD process from analysis, optimization until the parameterized drawing has been carried out. In the experiment, a new type of test rig of hydrostatic and hybrid bearing have been carried out. Some valuable test results of this kind of hybrid bearing have been obtained in order to improve its wide application.

Key words: CAD, Dynamic behavior, Hybrid bearing