What is the internal principle of the cylinder?

What is the internal principle of the cylinder?

The hydraulic cylinder is a linear moving actuator whose output force is proportional to the effective area of the piston and the pressure difference at both ends. Its function is to convert hydraulic energy into mechanical energy. The input of hydraulic cylinder is fluid flow and pressure, and the output is linear velocity and force. The piston of hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited. Hydraulic cylinder is an energy conversion equipment which converts hydraulic energy into mechanical energy of reciprocating linear motion. The hydraulic cylinder is basically composed of cylinder barrel and cylinder head, piston and piston rod, sealing equipment, buffer equipment and exhaust equipment. Buffer equipment and exhaust equipment depend on the detailed application occasion, other equipment is essential.