The planetary gear NPV 1000 / 9, shown in the figure, is part of the production program of the VEB machine factory and iron foundry Dessau. There is a single-stage planetary gearbox with a ratio of i = 9 With an input power of 2800 kW and an input speed of 1500 rev / min results in a torque of 16 400kpm that may occur during start-up company in the 2.5-fold value. There are potential applications in all industrial branches, such as in general machinery, power plants and ships, conveyor systems etc. Especially, the gearbox to drive cement mills developed.