A Hyd Cylinder china hydraulic cylinder is a mechanical actuator used to provide unidirectional force through a unidirectional stroke. Hydraulic cylinders are used in almost every market and so are available in a number of configurations. The two main types of hydraulic cylinders are Tie-rod and Welded. Each one of these cylinder types can possess unique applications due to their styles. Tie-rod cylinders are often installed in light to moderate duty applications and are generally designed to become repaired or re-packed if necessary. Welded cylinders are created for most applications and are more complex in design but are usually more difficult to repair due to the welded style. Welded cylinders are typically a better solution due to their compact design and when a more robust style is important in an application.