A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint

A hydraulic oil tank (17) is supported by a tank support base (18) and a tank support base (19) at a position higher than that of an upper surface (8A) of a right side frame (8) . Also, a space portion (23) with an opening (23A) corresponding to an outer side in the right-and-left direction of an upper revolving structure (3) is provided between a hydraulic oil tank attachment site (9B) and a hydraulic oil tank attachment site (10B), and a bottom surface portion (17E) of the hydraulic oil tank (17). In addition, the opening (23A) of the space portion (23) is provided with an opening/closing cover (25D) openably closing the opening (23A).

A hydraulic system is provided for a working machine that includes a hydraulic cylinder for raising and lowering an implement. The hydraulic system includes a sensor for measuring a pressure in the hydraulic cylinder; and a control unit for controlling the movement of the hydraulic cylinder; wherein the control unit is configured to compare a pressure value measured by the sensor with a preset target pressure level range and to control the pressure in the hydraulic cylinder to be within the preset target pressure level range by adding or draining hydraulic fluid to/from a pressure side of the hydraulic cylinder for maintaining a substantially constant ground contact force between the implement and the ground.

Cost for a direction switching valve (third direction switching valve) is reduced while oil is supplied from two pumps to one actuator (third actuator). A hydraulic circuit 30 for construction machinery includes a first unloading passage 31 connected with a first pump 11, a second unloading passage 32 connected with a second pump 12, a first supply passage 41 connected with the first pump 11, a second supply passage 42 connected with the second pump 12, a third supply passage 43, and third direction switching valves (53E and 53F). The third supply passage 43 is connected with the first supply passage 41 and the second supply passage 42. The third direction switching valves are connected with the third supply passage 43, the first unloading passage 31, the second unloading passage 32, and the tank passage 35, and supply and discharge oil to and from the third actuators (23E and 23F).