Hydraulic cylinders generally refer to hydraulic cylinders, which are hydraulic actuators that convert hydraulic energy into mechanical energy and perform linear reciprocating motion (or oscillating motion). It is simple in structure and reliable in operation. When it is used to realize the reciprocating motion, the speed reducing device can be eliminated, and there is no transmission gap, and the motion is stable, so it is widely used in various mechanical hydraulic systems.

The output force of the hydraulic cylinder is proportional to the effective area of the piston and the pressure difference between the two sides; the hydraulic cylinder is basically composed of a cylinder and a cylinder head, a piston and a piston rod, a sealing device, a buffer
device and an exhaust device.
Buffers and exhausts depend on the specific application, and other devices are essential.
Hydraulic cylinders are mainly used in machinery and are the most important components of construction machinery. They are mainly important core components for powering machinery.

Hydraulic cylinders is an actuator in the hydraulic system. According to the structural form of the common hydraulic cylinder, it can be divided into four types: piston hydraulic cylinder, plunger hydraulic cylinder, telescopic hydraulic cylinder, swing hydraulic cylinder.
According to the mode of acting, it can be divided into single acting hydraulic cylinder and double acting hydraulic cylinder.