Advantages ①The unit power is light in weight. Statistics show that the weight per unit power of hydraulic pump and hydraulic motor is only 1/10 of generator and motor, and the hydraulic pump and hydraulic motor can be as small as 0. 03N/W. As for size, the former is about 12%-13% of the latter. In terms of output force, it is easy to obtain extremely high pressure hydraulic oil with a pump, and after this oil is sent to the hydraulic cylinder, a large force can be generated. Therefore, hydraulic technology has the outstanding characteristics of light weight, small size and large output, which is conducive to miniaturization and miniaturization of mechanical equipment and its control system, and high-power operation. ② The layout is flexible and convenient. The arrangement of hydraulic components is not restricted by strict spatial position, and it is easy to reach the connection of various parts in system through pipelines according to the needs of machine. The layout and installation have great flexibility, and can form complex systems that are difficult to form by other methods. ③ The speed range is large. Through the control valve, the hydraulic transmission can reach a large range of infinitely-variable-speed regulation of hydraulic actuator during operation, and the speed regulation range can reach 2000e. ④ It works stable and fast. The oil is elastic and can absorb impact force, so the hydraulic transmission transmits the movement evenly and smoothly. It is easy to reach quick start, braking and frequent reversing. The commutation frequency of reciprocating rotary motion can reach 500 times /min, and the commutation frequency of reciprocating linear motion can reach 1000 times/min. ⑤ Easy to operate and control and reach overload protection. The hydraulic system is easy to operate and control, and it is easy to reach automatic control, long-distance remote control and overload protection. It can be self-lubricated during operation, which is beneficial to heat dissipation and prolong service life. ⑥ Easy to automate and integrate electromechanical and hydraulic. Hydraulic technology is easy to integrate with electrical and electronic control technology to form an electromechanical-hydraulic integrated composite system to reach automatic working cycle. ⑦ It is easy to reach linear motion. Using hydraulic transmission to achieve linear motion is simpler than mechanical transmission. ⑧ The hydraulic system is easy to design, manufacture, use and maintain. Hydraulic components belong to the basic parts of the machinery industry, and have achieved standardization, serialization and generalization. Therefore, it is convenient for the design, manufacture, use and maintenance of hydraulic systems, and is conducive to shortening the design and manufacturing cycle of machinery and equipment and reducing manufacturing costs. 2. Disadvantages ① The fixed ratio hydraulic transmission can’t be guaranteed. Due to the influence of factors such as compressibility and leakage of liquid, the hydraulic technology can’t strictly guarantee the fixed ratio transmission. ② The transmission efficiency is low. During the hydraulic transmission process, two conversions are required, and there is often a lot of energy loss, so the transmission efficiency is low. ③ The working stability is easily affected by temperature. The performance of hydraulic system is sensitive to temperature, and it is not suitable to work at too high or too low temperature. When using petroleum-based hydraulic oil as the transmission medium, it is necessary to notice fire prevention problem. ④ The cost is high. The manufacturing precision of hydraulic components is required to be high to prevent and reduce leakage, so the cost is high. ⑤ Difficulty in fault diagnosis. Hydraulic components and systems are prone to system failures due to hydraulic oil contamination and other reasons, and failures are difficult to diagnose. For further information about selections pneumatic pressure regulator, please visit https://www.genndih.com/proportional-pressure-regulator.htm