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 pumpThe oil volume enclosed in the gap between teeth is conveyed from the intake to the discharge side of the pump by the turning of the gear, displaced to the contact point of the wheel and forced into the pressure connection. (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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