Abstract: A rotor bearing on the turbine side of a gas turbine is surrounded by a concentric cavity through which fuel is routed from its source to the turbine combustion chamber. The fuel of the gas turbine is used as the coolant for the rotor bearing and at the same time the concentric cavity surrounding the bearing forms a hydraulic "compression" film damping device.

Abstract: A method for achieving a predetermined pressure behavior of the clamping bodies (1) of a free wheel, for which the pressure force can be determined and adjusted in advance. The position of the center of gravity (S) of the clamping body (1) is changed by removing material from the clamping bodies to achieve a predetermined pressure behavior.

Abstract: A displacement pump, especially cell pump for high speeds, for compressing gaseous media, which includes a housing in which a rotatable body is journaled having slides radially movably guided therein. The bearings for the rotatable body are radially guiding loose bearings with oil lubrication. Between the bearings for the rotatable body and in the rotatable body there are provided radially slidable discs with spiral grooves. The slides and the housing and/or a cylinder inserted into said housing are made of steel, and the inner wall surface of the housing or of the cylinder forms a smooth sliding surface for the slides.