Pump Flow Calculator

Pump Flow

This calculator page enables you to calculate either the Flow Rate Q (litres/minute) or Volumetric Displacement Vg (cm3).

In order to calculate the hydraulic Pump Flow rate Q (l/min), you must enter the following figure

1. Pump Speed n, for AC Motors (Full load) is typically 1450 rpm (4 Pole 50Hz), 1750 rpm (4 Pole 60Hz), 2850 rpm (2 Pole 50Hz) and 3450 rpm (2 Pole 60 Hz).
2. Pump Efficiency, for hydraulic power pack pumps this is in the range 0.85-0.95.
3. Displacement Vg, sizes for powerpacks range from 0.17cm3 to 90cm3

Then press Q to calculate, this will be shown in the result box.

In order to calculate the Volumetric Displacement Vg (cm3) of the hydraulic pump, you must enter the following figures:-

1. Pump Flow Q, this is litres/minute
2. Pump Efficiency, for hydraulic power pack pumps this is in the range 0.85-0.95.
3. Pump Speed n, for AC Motors this is commonly 1450 or 2850rpm

Then press Vg to calculate, this will be shown in the result box.

Useful conversions factors:

1 Litre = 0.22 UK Gallons = 0.26 US Gallon
1cm3= 0.061 cu.inch

Please note: This calculator is for guidance purposes only.