What are the types of hydraulic cylinders used in lifting equipment?

Hydraulic cylinders used in lifting equipment can be categorized into several types based on their design and application. The main types include: single-acting cylinders, which have one port for fluid and rely on the load or a spring to return; double-acting cylinders, which have ports on both ends and can extend and retract through fluid pressure; telescopic cylinders, which consist of multiple stages that can extend sequentially for greater reach; and rotary hydraulic cylinders, which provide a combination of linear and rotary motion. Each type is chosen based on the specific requirements of the lifting task, such as the need for speed, force, and control.