Multi-circuit pump normally with an inclined axis design, but also a design according to the swash plate principle, in which two drives are included in one housing. In the case of an inclined axis design, either the toothed drive shaft with one pump as a drive for a second pump (Figure V 20) — in this case both are adjusted using a sum power controller — or a transfer case is used for both pumps, which are then adjusted independently of one another (e.g. by a limit load control). In this case there is also a drive shaft throughout the controller, to which further pumps can be connected. In the case of a design according to the swash plate principle, the pistons of both cylinder drums each run to one side of the shared transfer case. The cylinder drums are connected to a shaft which runs through the controller and the adjustment of the swash plate causes a change to the geometric displacement of both pumps.
Figure V 20: Dual adjustment pump