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P. 11
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Power take-off, Pump, Hydraulic pump, Gear reducer, Hydraulic motor
Text version of the page
Useful formulaes
Required flow rate Q =
Dxn
1000 x Ī·v
Speed
n =
Q x 1000 x Ī·v
D
RPM
Torque
M =
D x āp x Ī·hm
6,3
Nm
Power
P =
Q x āp x Ī·t
60
litresāmin.
kW
D = displacement, cm3ārevolution
n = speed, revolutionāmin
P = power, kW
Q = flow rate, litresāmin
Ī·v = volumetric efficiency
Ī·hm = hydraulic-mechanical efficiency
Ī·t = overall efficiency = Ī·v x Ī·hm
M = torque, Nm
āp = pressure difference between the hydraulic motor
inlet and outlet, MPa
10 (11)