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 Force in [N]
Ak = Piston area

(D² *3,14)


4

in [mm²]
Ar = Piston ring area

(D²-d²) * 3,14


4

in [mm²]
D = Piston diameter in [mm]
d = Rod diameter in [mm]
h = Travel length in [mm]
Q = Feed flow in [l/min]
t = Travel time in [s]
v = Travel speed in [m/s]

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