A hydraulic cylinder or jack is a type of hydraulic actuator that converts pressure into force.

Hydraulic cylinders are found in a variety of hydraulic machines to apply linear force.

The maximum cylinder force depends on the effective level and allowable working pressure.

Important parameters of hydraulic cylinders are speed, force and course.

The speed depends on the cross section and the oil fed per unit time. Depending on the design, the cylinder can generate tensile or compressive force. The most commonly used hydraulic cylinders include one-way and two-way.

One-way cylinder: This cylinder exerts force in one direction only.

Two-way cylinder: Two-way cylinder can transmit power in both directions.