A hydraulic system of a mobile work machine (MWM) ; wherein the hydraulic system comprises: at least one hydraulic pump (P1, P2)for generating hydraulic fluid flow and pressure to a hydraulic circuit ; at least one electric motor (M) for rotating the at least one hydraulic pump (P1, P2); at least one hydraulic actuator (HA) connected to the hydraulic circuit ; and at least one control device (CU) for controlling operation of the hydraulic system; wherein, the hydraulic system comprises two hydraulic pumps, a first hydraulic pump (P1) and a second hydraulic pump (P2); the first hydraulic pump (P1) is connected to a first working pressure space of the hydraulic actuator (HA) by means of a first hydraulic line ; the second hydraulic pump (P2) is connected to a second working pressure space of the hydraulic actuator (HA) by means of a second hydraulic line , and wherein pressure of the hydraulic fluid prevailing in the first working pressure space and the second pressure space are configured to cause inversely directed forces for a moving element of the hydraulic actuator (HA) ; the hydraulic system comprises one common electric motor (M) which is configured to rotate the two hydraulic pumps (P1, P2) simultaneously; the first and second hydraulic pumps (P1, P2) have inverse pumping characteristics so that when the first hydraulic pump (P1) generates pressure (P+) the second hydraulic pump (P2) generates suction (P-), and vice versa; characterized in that the movement speed and direction of the hydraulic actuator (HA) are configured to be controlled by controlling rotational speed and direction of the electric motor (M). at least one hydraulic pump (P1, P2)for generating hydraulic fluid flow and pressure to a hydraulic circuit ; at least one electric motor (M) for rotating the at least one hydraulic pump (P1, P2); at least one hydraulic actuator (HA) connected to the hydraulic circuit ; and at least one control device (CU) for controlling operation of the hydraulic system; wherein, the hydraulic system comprises two hydraulic pumps, a first hydraulic pump (P1) and a second hydraulic pump (P2); the first hydraulic pump (P1) is connected to a first working pressure space of the hydraulic actuator (HA) by means of a first hydraulic line ; the second hydraulic pump (P2) is connected to a second working pressure space of the hydraulic actuator (HA) by means of a second hydraulic line , and wherein pressure of the hydraulic fluid prevailing in the first working pressure space and the second pressure space are configured to cause inversely directed forces for a moving element of the hydraulic actuator (HA) ; the hydraulic system comprises one common electric motor (M) which is configured to rotate the two hydraulic pumps (P1, P2) simultaneously; the first and second hydraulic pumps (P1, P2) have inverse pumping characteristics so that when the first hydraulic pump (P1) generates pressure (P+) the second hydraulic pump (P2) generates suction (P-), and vice versa; characterized in that the movement speed and direction of the hydraulic actuator (HA) are configured to be controlled by controlling rotational speed and direction of the electric motor (M). <EOS>