A hydraulic Hyd Cylinder china cylinder is a mechanical actuator used to provide unidirectional force through a unidirectional stroke. Hydraulic cylinders are used in almost every sector and so are available in a variety of configurations. Both main types of hydraulic cylinders are Tie-rod and Welded. Each one of these cylinder types can have unique applications because of their styles. Tie-rod cylinders are usually installed in light to medium duty applications and tend to be designed to become repaired or re-loaded if required. Welded cylinders are made for most applications and are more complex in design but are usually more difficult to repair due to the welded style. Welded cylinders are usually a better solution because of their compact design and when a more robust style is important within an application.