Hydraulics calculator – calculate hydraulicsThe use of liquids to transmit force and energy.

 

Measurements and units used

Drive torque T Nm
Differential pressure p bar
Rotation speed n min-1
Geometr. displacement volumeThe volume of liquid in cm³ in a pump or motor displaced by the upward stroke or other cycle during a rotation of the drive shaft. per rotation Vg cm3
Total efficiency ηt Standard value ca. 0,85
Power P kW
Mechanical hydraulicThe use of liquids to transmit force and energy. efficiency ηmh Standard value ca. 0,85
Displacement volume Vg cm3
Volume flow rate qv L/min
Volumetric efficiency ηv Standard value ca. 0,9
Gear pump diameter D cm
Gear pump length L cm
Gear pump gear width W cm

 

 

qv = volume flow rate in in L/min

Vg=cm3
n=min-1
ηv=(Standard value ca. 0.9)
  

 

P=kW
Δp=bar
ηt=(Standard value ca. 0.85)
  

 

Vg = geometric displacement volume cm³/U

qv=L/min
n=min-1
ηv=(Standard value ca. 0.9)
  

 

T=Nm
Δp=bar
ηmh=(Standard value ca. 0.85)
  

 

n = rotation speed in min-1

qv=L/min
Vg=cm3
ηv=(Standard value ca. 0.9)
  

 

P=kW
T=Nm
  

 

T = torque in Nm

Vg=cm3
Δ=bar
ηmh=(Standard value ca. 0.85)
  
 

 

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p = differential pressure in bar

T=Nm
ηmh=(Standard value ca. 0.85)
Vg=cm3
  

 

P=kW
qv=L/min
ηt=(Standard value ca. 0.85)
  

 

P = power in kW

T=Nm
n=min-1
  

 

qv=L/min
Δp=bar
ηt=(Standard value ca. 0.85)
  
 

 

 Calculate gear pump conveyed volume

 D = Gear pump diameter in cm
 L = Length of bore in pump casing in cm
 W = Gear pump width in cm

Gear pump calculation

Conveyed volume calculation for a gear pump (very accurate approximation)

D=cm
L=cm
W=cm
  
 

 

Calculate hydraulics quickly...

 

HK Hydraulik GmbH offers all professionals and interested parties ready-made calculators for the most important hydraulic calculations.

 

Until now, to calculate the Volume flow rate or conveyed volume of a gear pump, technicians had to look up the formulas, pick up a calculator, enter the calculation according to the formula, and recalculate it again to check as a precaution. This could take a whole 15 minutes.

 

Now you just have to enter the values you know / have calculated / measured into the relevant calculator module, and you get your result straight away.

 

Please note: when we suggest standard values, this gives you a very close approximation that is good enough for general use. You can of course also enter the actual values instead of the standard values.

 

Our tip: bookmark this page on your workshop computer or smartphone. We are delighted if we can help you with our hydraulics calculator.

 

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