The article describe the design and operation of a prototype of satellite pump and a prototype of satellite motor. In both machines, the operating mechanism consists of a non-circular gear with external teeth (rotor), non-circular gear with internal teeth (curvature), and ten gear wheels which cooperate with the rotor and the curvature. The differences between the commutation unit in the pump and the commutation unit in the motor are described. The principle of axial clearances compensation in the pump and in the motor is also presents. The article contains the values of the losses and the efficiency of these machines supplied with rapeseed oil, HFA-E emulsion and pure tap water. The results of durability tests of motor supplied with HFA-E emulsion and rapeseed oil are also presented.