The subject invention provides a thrust bearing assembly having only three
thrust flanges in total. One portion of the thrust bearing assembly
comprises a main bearing having an arcuate bearing shell with a concave
inner surface and a convex outer surface. A thrust washer having
hydrodynamic features abuts one of the edges of the main bearing and
extends radially outwardly from the outer surface thereof forming a
thrust surface. The other of the edges of the main bearing is free of a
flange. The free edge of the main bearing is preferably spaced inward
from other thrust surfaces and the edge has a substantially narrower
width than the other thrust surfaces. The other portion of the assembly
may include a traditional thrust bearing having one thrust flange with
hydrodynamic features and another thrust flange free of hydrodynamic
features, both extending radially outwardly therefrom or may include
another main bearing abutting a pair of thrust washers, one having
hydrodynamic features and one free of hydrodynamic features, extending
radially outwardly from the other main bearing. In either configuration,
the thrust flange or thrust washer that is free of hydrodynamic features
is opposite the thrust washer having hydrodynamic features of the main
bearing.