The low-speed reducers are of the compact type being distinguished by high gear ratio, small dimensions and of scarceness parts. A thing is the matter of special type of differential epicyclic gear having relative movement of the satellite gear on the eccentric output shaft. They are produced for the outputs from 0,1 up to 10 kW with standard ratio values 13, 17, 21, 25, 32, 41, 53, 67, 83, 97. For an increase of desired ratio it is possible to deliver two-stage combinations.