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Force and Movement Ratios of a Double-Action Cylinder

doppeltwirkender Hydraulikzylinder

If an external force F acts on a piston, this force creates a pressure on the piston area Ak. Conversely, this force is also a resistance that the pump delivery Q meets. In this way, a pressure builds that acts evenly on all sides, including the piston area Ak. The piston can thus now exert a force itself according to the following formula:

F = p * Ak

F = p * Ar (analogously for the return)

F=Piston Forcein [N]
Ak=Piston area

(D² *3,14)


4

in [mm²]
Ar=Piston ring area

(D²-d²) * 3,14


4

in [mm²]
D=Piston diameterin [mm]
d=Rod diameterin [mm]
h=Travel lengthin [mm]
Q=Feed flowin [l/min]
t=Travel timein [s]
v=Travel speedin [m/s]

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