When a single-acting hydraulic cylinders (ram) is in operation, energy is transmitted by the pump and the hydraulic fluid to the working mechanism in one direction only. The movement in the opposite direction is initiated by the springs or weight of the mechanism that is driven by a hydraulic scylinder. A simple and good example is a dump truck body where the body is lifted by a hydraulic ram and returned to its original position by the weight of the body itself.

A single-acting hydraulic cylinder consists of three main components:

– hydraulic cylinder body;

– hydraulic cylinder rod;

– hydraulic cylinder piston and seals.

A more complex version of a single-acting hydraulic cylinders is a single-acting telescopic hydraulic cylinder. In this type of hydraulic cylinder, both the body and the piston rod are extending inner sections. The first section is a body for the second one, the second is a body for the third, and so on.

Blue telescopic cylinder

Operating Principle

The pump creates pressure on the operating hydraulic fluid which transfers this pressure to the piston and sets it in motion. While the piston extends the hydraulic cylinder rod to its full or desired length, the electronics regulate the operation of the pump.

As soon as the electronics stop the pump, the piston and rod are pushed back by the spring or weight of equipment in operation. The hydraulic fluid is then pressed by the hydraulic cylinder piston back into the hydraulic tank.

The Eurobalt manufacturing group produces almost all types of single-acting hydraulic cylinders for various industries. Having a full production cycle, we carry out all types of work ourselves. This allows us to guarantee the high quality and reliability of our hydraulic cylinders.