Hydraulic cylinder is the executive component of hydraulic transmission system, many modern heavy machinery are inseparable from the hydraulic cylinder.A lot of power transmission can only be qualified for production under the promotion of hydraulic cylinder. It is widely used in all kinds of construction machinery, machine tools and other industries.

Hydraulic cylinder is usually composed of end cover, cylinder, piston rod, piston and other components, in order to prevent oil leakage, the hydraulic cylinder parts are provided with a sealing ring, the end of the hydraulic cylinder is provided with a buffer device.

When the hydraulic oil enters the oil inlet hole from the left end and acts on the left end of the piston, the hydraulic oil pushes the piston to move to the right in the axial direction, and then pushes the parts connected with the piston rod to move to the right, and the hydraulic oil on the right side of the piston is pushed out of the hydraulic cylinder.When the hydraulic oil enters from the right inlet and acts on the right end of the piston, the hydraulic oil pushes the piston to move to the left in the axial direction, and then pushes the parts connected with the piston rod to move to the left.