Connection block for a hydrostatic piston machine

The invention relates to a connection block for a hydrostatic piston machine which is provided for simultaneous operation in a first hydraulic circuit and a second hydraulic circuit. A first working pressure duct ( 60 ) and a second working pressure duct ( 61 ) are formed in the connection block, via which ducts respectively a first and a second working line ( 7, 8 ) of the first hydraulic circuit can be connected to respectively a first and a second kidney-shaped control port of a control plate ( 52 ) of the hydrostatic piston machine. Furthermore, a third working pressure duct ( 62 ) and a fourth working pressure duct ( 63 ) are formed in the connection block ( 25 ), via which ducts respectively a third and a fourth working line ( 7', 8 ') of the second hydraulic circuit can be connected to respectively a third and a fourth kidney-shaped control port ( 70', 71 ') of the control plate of the hydrostatic piston machine. A common feeding pressure duct ( 80 ) is provided in the connection block ( 25 ), it being possible for the common feeding pressure duct ( 80 ) to be connected to the first to fourth working pressure duct ( 60, 61, 62, 63 ) respectively via a separate feeding device.