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Pneumatics and hydraulics are similar in their use of airborne and liquid, respectively, as the force medium used to transfer energy. They are however, mechanistically different in their principal source of power which are in the forms of pressure and force.Pneumatics, also known as compressed air technology, utilizes air or other gases as the force medium through the use of pressure Storage, transportation, or control features. The primary application of pneumatics is in industrial automation and is used in many areas including manufacturing, construction, pharmaceuticals, metallurgy, and machine tools.Pneumatics is generally used as part of a system for controlling the movement and direction of a machine or mechanism called a hydraulic actuator. The actuator can be a hydraulic cylinder that is either linear or rotary in nature, depending on the application. The actuator is actuated by pressure from an external source, such as a compressor or an air motor, and is typically powered by an electric motor or an internal combustion engine.In contrast to pneumatics, hydraulics use a liquid, such as hydraulic fluid, as the force medium. Hydraulics relies on the same pressure principle as pneumatics, but the power is generated by pumps instead of pressure. This makes hydraulic systems more efficient and highly powerful.Hydraulic systems are used in many applications such as industrial machinery, automotive, and agricultural sectors. Typical applications include construction machinery, aircraft, press machines, and pumps. Hydraulic systems are also used in many mobile equipment such as cranes, forklifts, and agricultural tractors.Hydraulic systems are commonly used to power industrial robots, which are used for industrial automation. Generally, these robots are constructed from motion-controlling servomechanisms which are driven by hydraulic pistons.Hydraulics is also widely used in hot forming processes in metalworking applications. In hot forming, hydraulic cylinders are used to drive and control the movements of metal components to provide shape accuracy and finish for the components. Hydraulics are used in the foundry industry to operate masking equipment and molds.Both pneumatics and hydraulics have a variety of uses in modern industry. They provide us with higher power-to-weight ratios, excellent accuracy and speed of operation, minimal maintenance and cost, and quick response time.

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