Hydraulic motor torque and speed calculator
Enter the torque needed to turn the load, the system pressure and the speed you want; we calculate the motor displacement and the flow rate needed to feed the motor, and show orbital, gear and piston motors of that size.
How is it calculated?
- Displacement V (cm³/rev) = 20π × T (Nm) ÷ (Δp (bar) × mechanical efficiency)
- Flow rate Q (l/min) = V (cm³/rev) × n (rpm) ÷ (1000 × volumetric efficiency)
- Power P (kW) = T (Nm) × n (rpm) ÷ 9549
The results are for preliminary selection; check the values in the manufacturer's catalogue and your system's conditions separately.