ADVANTAGES OF FOIL BEARINGS - NEW APPLICATIONS INCLUDE FUEL CELL BLOWERS AND TURBOEXPANDERS

摘要

Unlike traditional pressurized hydrostatic bearings, foil bearings use hydrodynamic action of the fluid to support shafts in rotating machines. At standstill, the shafts are held by a journal lining made of spring-loaded foils. When the shaft starts spinning, the working fluid creates hydrodynamic pressure which lifts the foil from the shaft so there is no contact.