A plunger or a ram is a hydraulic cylinder, which is designed to apply force in one direction only. The returning force is generally the dead weight of the load and plunger itself. The basic constructional difference between a plunger and other cylinders is that a plunger does not have a mostly separate piston and piston rod. The piston itself is big and has a uniform diameter. This construction prevents buckling of the piston rod due to external buckling load. A common example of a plunger-type cylinder is the jack cylinder.
A plunger cylinder is a single-acting hydraulic cylinder with a piston surface, which can only deliver compressive forces in the extending direction. The design is carried out with or without an internal stop or guide piston, depending on the design. Plunger cylinders are especially used in applications where the force direction permits a safe return. These proven hydraulic cylinders are characterized by their simple design, low manufacturing costs, and especially good efficiency.
We manufacture these cylinders from a diameter of 100 mm and up to 600 mm. The strokes of these cylinders are smaller, up to 1.000 mm. As standard, the cylinders are made (cylinder tube) from the material DIN 2391 ST-52.3, BK+S, or according to the client's requirements. We manufacture cylinders according to the client's technical drawings or according to our documentation which is made based on the client's requirements.
