Hydraulic cylinders hydraulic energy into mechanical energy, is the reciprocating motion (or oscillating movement) of the hydraulic actuators. It has a simple structure, reliable operation. When you use for reciprocating motion, you are free of speed, and there is no transmission gaps, smooth motion, so is widely used in all kinds of mechanical hydraulic system. Effective area and output force of the hydraulic cylinder and piston is proportional to the pressure difference on both sides; basically consists of cylinder and cylinder head, Pistons of hydraulic cylinder and piston, seal, buffer and exhaust devices.

Buffer and depending on the specific application of the exhaust, and other devices are indispensable.