A bearing outer shell encases a self-lubricating polymeric bearing pad material
concentrically therein. A helical spring applies a force through from the outer
shell, through the bearing pad material, and onto a shaft when the bearing is installed
on a shaft. An elastomeric base material may be interposed between the outer shell
and the bearing pad to provide additional resiliency. The shaft may be sized to
create an interference fit, causing a radial preload that can be designed to exceed
the expected external vibration or shock forces. Proper selection of the elastomeric
base material affords damping of these environments. The bearing provides the necessary
guidance with minimal loss in power consumption. Therefore, not only is the useful
life of the shaft and housing extended, but the life of the associated gears, bearings,
and components that require proper alignment to minimize wear the load concentrations
is further extended.