
Pump-Motor calculations
Here you can find the online calculations for Pump-Motor in close loop.
These calculations are for variable displacement pump and fixed displacement motor.
| value | imperial | metrical | value | imperial | metrical |
| MAX Displacement (Const): | in3 | cm3 | Displacement (Const): | in3 | cm3 |
| Displacement (Actual): | in3 | cm3 | |||
| Volumetric Efficiency (Const): | % | Volumetric Efficiency (Const): | % | ||
| Mechanical Efficiency (Const): | % | Mechanical Efficiency (Const): | % | ||
| Overall Efficiency (Const): | % | Overall Efficiency (Const): | % | ||
| Input RPM (Const): | rev-1 | Output RPM: | rev-1 | ||
| Flow at MAX displacement (Const): | GPM | LPM | Output RPM at MAX flow: | rev-1 | |
| Flow from pump (Actual): | GPM | LPM | |||
| Required pressure: | psi | bar | |||
| Required Input Torque: | lbf-in | N-m | Output Torque: | lbf-in | N-m |
| Required Input Power: | HP | kW | Output Power: | HP | kW |
How to use this chart.
Just change any values in the input fields, other will be re-calculated automatically.
If you find a mistake, please let me know.

Very good