ABSTRACT
Given the strong dependence of journal bearing rotor dynamic characteristics on bearing static load, the rotor vibration characteristics of vertical-rotor machines are typically quite uncertain and randomly variable, far more than those of horizontal machines. While the Westinghouse experience was still fresh, the author infused his insights into vertical machines into the EPRI publication by Makay and Adams (17), which delineates important design and operational differences between vertical machines and horizontal machines.
