A tie-rod hydraulic cylinder is a common hydraulic actuator used to generate linear motion. It consists of a cylinder barrel and a piston rod, filled internally with fluid (typically hydraulic oil). When hydraulic oil enters the cylinder, hydraulic pressure forces the piston rod to extend outward, generating a pulling force. Conversely, when hydraulic oil is discharged from the cylinder, the piston rod retracts inward, producing a pushing force.
Tie-rod hydraulic cylinders are typically powered by hydraulic pumps. The flow of hydraulic oil is regulated via control valves to manage the extension and retraction of the piston rod. They are widely used in engineering machinery, metallurgical equipment, ships, aerospace, and other fields for pushing, pulling, lifting, and securing tasks. Due to their efficiency, stability, and reliability, tie-rod hydraulic cylinders have become essential components across many industrial sectors.