(US5046920-A)      A rotatable shaft is connected at one end to a movable blade thrust bearing having a collar. A heat pipe includes a first container surrounding and spaced from the rotatable shaft and extending axially for a predetermined engaging position adjacent the one end of the shaft to the journal and thrust bearings. The thrust bearing engages the outer surface of the first container and the shaft and thrust bearing and inner surface of the container define walls of a sealed first chamber surrounding a portion of the rotatable shaft and communicating with the journal and thrust bearings. The system includes a fluid contained in the first chamber for absorbing heat generated by the journal and thrust bearings. A second container is spaced from and surrounds a portion of the first container adjacent the one end of the shaft. The containers together define a second chamber for receiving and containing flowing water from the turbine for cooling the fluid in the first chamber.    USE -   Bearing cooling system for a water turbine operating a generator.    (19pp)    (DE4005848-C2)      The bearing cooler has a sealed heat-sink fluid take-up chamber with water passage pipe and a second chamber to cool fluid from the first chamber. An exterior tubular heating jacket (24) encloses the turbine shaft (4) with clearance and extends from a preset engaged position near one end of the shaft to both slide and axial bearings (1,3). The slide bearing (1) engages the jacket tube exterior and the shaft and the inside of the jacket complete the first sealed chamber.    The chamber encloses part of the shaft and connects to both bearings and the water passage pipe (19) is spaced from the outside of the jacket tube so that jacket and pipe together form the second chamber to take water from the turbine to cool the fluid from the first chamber. The jacket is expanded in diameter at a collar (22) to limit the disc shaped sector (9-2) of the first chamber.    USE/ADVANTAGE -   Water turbines. Linked chambers formed by cooler components round shaft keep bearings cool and operational.