Synonyms
Definition
A hydraulic actuator is a device used to convert hydraulic energy into mechanical energy. A hydraulic cylinder is a linear actuator converting hydraulic energy into linear motion and force.
Structural Principle
A typical hydraulic cylinder (Fig. 1.) consists of a cylinder barrel (A), a piston (B), and a piston rod (C). The piston is connected to the piston rod and the assembly moves back and forth in the barrel. The barrel is closed on each end by the cylinder bottom (D) and by the cylinder head (E), where the piston rod extends out of the cylinder. The piston divides the the barrel in two chambers, the bottom chamber (F) and the piston rod end chamber (G). The hydraulic pressure acts on the piston, which converts it to linear force. The cylinder body and the piston rod have mounting attachments to connect the cylinder to the other machine components.
Cross-sectional view of a...
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References
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Koskinen, K.T., Aaltonen, J. (2013). Hydraulic Cylinders. In: Wang, Q.J., Chung, YW. (eds) Encyclopedia of Tribology. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-92897-5_78
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