What Is The Difference between Single-acting And Double-acting Hydraulic Cylinders?

In terms of structure, single-acting hydraulic cylinders usually have only one port, while double-acting hydraulic cylinders have two ports, located at both ends of the cylinder barrel .

Working mode, single-acting hydraulic cylinders rely on hydraulic oil to push the piston to move in one direction, and reverse movement with the help of external forces, such as gravity, spring force and so on.Double-acting hydraulic cylinders can alternately feed and return oil through two ports to realize the two-way movement of the piston. For example, in the luffing mechanism of a crane, double-acting hydraulic cylinders can control the rise and fall of the lifting arm.