Journal Bearing Design Types And Their Applications To Turbomachinery.

Abstract

A review of several different types of hydrodynamic journal bearings that are commonly found in turbomachinery is presented. Emphasis is placed on the key geometric design parameters of each type. The discussion covers plain journal, axial groove, pressure dam, offset split, lemon bore, multilobe and titling-pad bearings. The application of the critical speed map and some basic non-dimensional bearing parameters as tools for preliminary bearing selection and comparison are discussed. These tools are applied to two case studies, which demonstrate the proper application of different bearing designs to industrial turbomachinery.