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Hydraulic Pumps and Motors
Flow rate, shaft torque, shaft power and hydraulic power
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Hydraulic pump and motor equations:
Flow rate
Q = D n / 1000 (1)
where
Q = flow rate (l/min)
D = displacement (cm3/rev)
n = revolutions (rpm)
- rev = revolution
- rpm = revolution per minute
Shaft Torque
T = D p / 20 π (2)
where
T = torque (Nm)
p = pressure (bar)
Shaft Power
Ps = T n / 9554 (3)
where
Ps = shaft power (kW)
Hydraulic Power
Ph = Q p / 600 (4)
where
Ph = hydraulic power (kW)
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