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Hydraulic Formulas

Theoretical Thrust (Cylinders)

N= Effective area (sq.cm) x pressure (bar) x 10
Lb= Effective area (sq.in) x pressure (psi)


Hydraulic Power

kW=

Flow rate (L/min) x pressure (bar)


600

hp=

Flow rate (gpm) x pressure (psi)


1714


Geometric Flow Rate (Cylinders)

L/min=

Effective area (sq.cm) x piston speed (m/min)


10

gpm=

Effective area (sq.cm) x piston speed (in/min)


231


Velocity of Fluid in Pipe

m/sec=

Flow rate (L/min) x 21.22


D x D

   (D: inside diameter of pipe in mm)
ft/sec=

Flow rate (gpm) x 0.408


D x D

   (D: inside diameter of pipe in mm)
 
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