singlepiston rodThe hydraulic cylinder only has a piston rod at one end. Both inlet and outlet ports A and B can be filled with pressure oil or return oil to achieve bidirectional movement, hence it is called a double acting cylinder.

The piston can only move in one direction, and its reverse movement needs to be completed by external force. But its stroke is generally larger than that of a piston hydraulic cylinder.

Piston hydraulic cylinders can be divided into two types of structures: single rod and double rod. Their fixing methods are fixed by the cylinder body and the piston rod. Depending on the hydraulic pressure, there are single acting and double acting types. In a single acting hydraulic cylinder, pressure oil is only supplied to one chamber of the cylinder, and hydraulic pressure is used to achieve unidirectional movement of the cylinder. Reverse movement is achieved by external forces such as spring force, self weight, or external loads; The movement of the piston in both directions of the double acting hydraulic cylinder is achieved through alternating oil injection into two chambers, relying on the action of hydraulic pressure.