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Hydraulic cylinder tips part 5

Author : Andrew Delaney of Parker Hannifin

12 February 2013

Cylinder body and end caps
The cylinder body and end caps together contain the full hydraulic pressure created by both the hydraulic system and the load under dynamic conditions.

They are designed to withstand peak pressures, which can exceed twice the maximum rated operating system pressure. When selecting a cylinder, then, consider not only the system pressure but also the ‘spikes’ that can occur when resistance to travel is encountered.

As an example, Parker’s tie rod cylinders are designed to be fatigue-free at the maximum rated pressure, and have a 4:1 factor of safety; this is designed to ensure the safety of personnel as well as the long working life of the cylinder. The use of high grade tube and tie rod materials plus the machining of end caps from solid billets results in strong dependable cylinders that deliver high productivity over a long service life.


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