Pneumatic actuators are devices that use compressed air to create motion. They convert the energy from the compressed air into mechanical movement, which can be linear or rotary. These actuators are commonly used in various applications, such as in industrial automation, robotics, and automotive systems, where precise control and quick response times are essential. The main components of a pneumatic actuator include a cylinder, piston, and valves. When compressed air enters the cylinder, it pushes the piston, causing it to move. This movement can then be used to operate machinery, open or close valves, or perform other tasks that require force and motion.