Rotor-Bearing Dynamics of High-Speed Turbomachinery

This paper discusses the influence of rolling element and fluid film bearings on rotor dynamics of “high-speed” turbo-machinery. System critical speeds, rotor response to unbalance, instability, and turbulence are discussed. The types of fluid film bearings best suited for high-speed operation are identified. Examples of high-speed turbomachinery using rolling element, liquid film and gas bearings are presented.