PUMP WITH IMPROVED BEARING ARRANGEMENT FOR AXIAL POSITION CONTROL

摘要

A bearing arrangement for a pump is adapted for controlling thrust loads and limiting undesirable axial movement of components. The pump has a shaft having first and second shaft ends, and the pump may be configured so that the shaft is drivable from one or both of the shaft ends. The first and second shaft ends are respectively supported in a first and second bearing arrangement. Each bearing arrangement includes a radial main bearing having an inner race disposed around the shaft end. The inner race contacts a mounting ring to transfer outwardly axial thrust forces against a thrust bearing assembly. Each bearing arrangement is retained by a bearing cap contacting against an outer side of the thrust bearing assembly. A shim having a selected thickness can be placed between the bearing cap and the housing in order to position the internal pump components in an axially centered position to maintain proper clearances in order to minimize wear.