What are the hydraulic components

    Hydraulic element is the core component of a hydraulic system, consisting of five parts: power element, actuator element, control element, auxiliary element, and working medium. The power components convert mechanical energy into hydraulic energy through gear pumps, vane pumps, etc; The actuator utilizes hydraulic cylinders and motors to convert hydraulic energy into mechanical motion; Control components include directional control valves, pressure control valves, and flow control valves, which are used to regulate system parameters. Auxiliary components include supporting facilities such as oil tanks, filters, oil pipes, and sealing devices, while hydraulic oil serves as an energy transfer medium. [1] According to the application field, it can be divided into three categories: industrial equipment hydraulic components, walking machinery hydraulic components, and aerospace and navigation hydraulic components. Among them, walking machinery hydraulic components need to withstand higher power density and instantaneous high-pressure impact. [3] The machining accuracy of the core hydraulic valve reaches the micrometer level, involving 24 common types such as direct acting relief valves, pilot operated relief valves, manual directional valves, etc. Its performance directly affects the operability and stability of the equipment. [2] Domestic enterprises have achieved a localization coverage rate of over 95% for hydraulic valves used in automotive cranes through independent research and development of high-performance load sensitive multi way valves and other technologies. The industry is developing towards intelligent (chip based hydraulic components) and green (water pressure transmission technology) directions. The global mobile hydraulic market value is expected to reach 17.5 billion US dollars in 2024, and the industry is expected to resume growth in 2025. The Asia Pacific region has the highest compound growth rate due to mining demand.