ABSTRACT

The technology fundamentals of sliding motion between components loaded against each other is the focus of this chapter. That begins with the elementary physics covering sliding motion with the conditions of (1) dry and unlubricated, (2) boundary lubrication by thin chemical molecular layers, (3) mixed lubrication comprised of lubricating layers intermingling boundary lubrication and small localized pockets of very thin hydrodynamic pressurized regions, and (4) hydrodynamic and hydrostatically generated full fluid films completely separating the components in relative sliding. This is followed by the engineering basics of bearing types utilizing the aforementioned elementary fundamentals of loaded surfaces in relative sliding motion, including (1) journal bearings and thrust bearings, (2) gas bearings, (3) compliant surface bearings, (4) elastrohydrodynamic contacts, (5) flow turbulence in lubricating fluid films, and (6) water lubricated rubber-lined bearings.