The working pressure of the hydraulic system mainly depends on the load. Generally speaking, the working pressure of the hydraulic system refers to the highest working pressure of the system. If the pressure exceeds the value of the equipment, the overflow valve works to relieve the pressure. And the actual hydraulic system The working pressure is determined by the load, which refers to the actual pressure of the hydraulic oil, which can generally be read directly by the pressure gauge. The pressure increases with the increase of the load.
It can be known from the balance of force: the thrust of the cylinder = load, the thrust of the cylinder = hydraulic oil working pressure * cylinder working cylinder area, that is, working pressure = load/cylinder area. The choice of x0d pressure depends on the size of the load and the type of equipment. It is also necessary to consider the constraints of the assembly space, economic conditions and component supply of the actuator. x0d is under a certain load and the working pressure is low. It is necessary to increase the structural size of the actuator. For some equipment, the size is required. Restricted, it is not economical from the perspective of material consumption; on the contrary, if the pressure is selected too large, the material, sealing, and manufacturing accuracy of pumps, cylinders, valves and other components are also required to be high, which will inevitably increase the cost of equipment. x0d Generally speaking, For equipment with a fixed size that is not too limited, the pressure can be selected lower, and the pressure of heavy-duty equipment for walking machinery should be selected higher. For x0d, the working pressure is selected according to the load as follows: x0d load<5kN, working pressure<0.1MPa; x0d load 5~10kN, working pressure 1.2MPa; x0d load 10~20kN, working pressure 2.3MPa; x0d load 20~30kN, working pressure 3~4MPa; x0d load 30~50kN, working pressure 4~5MPa; x0d load 50kN, Working pressure = 5MPa; x0d such as various machinery commonly used system working pressures are as follows: x0d grinder 0.2MPa x0d modular machine tool 5MPax0d planer 8MPa x0d broaching machine 10MPa agricultural machinery, small construction machinery, construction machinery, hydraulic rock drill 10~18MPa hydraulic press, large and medium-sized excavation Machines, heavy machinery, lifting and transporting machinery 20~32MPa.