How do I calculate Hydraulic Power Unit Sizing?

To calculate Hydraulic Power Unit Sizing: Enter System pressure, Flow rate Q, Volumetric efficiency and other values. Click Calculate. INDUGRID computes the result instantly using the formula: P_hyd [kW] = p [bar] × Q [l/min] / 600 | P_motor = P_hyd / (η_vol × η_mech). No registration required.

What units does the Hydraulic Power Unit Sizing calculator use?

The Hydraulic Power Unit Sizing calculator uses the following units: bar, l/min, %, cc/rev. SI units are used by default.

Is the Hydraulic Power Unit Sizing calculator free?

Yes. The INDUGRID Hydraulic Power Unit Sizing calculator is completely free, requires no account or login, and works on desktop and mobile browsers.

Hydraulics

Hydraulic Power Unit Sizing

Calculate hydraulic power, motor power requirement and pump speed based on system pressure, flow and efficiency.

Units:

in LinkedIn

💡Hydraulic power = pressure × flow. At 200 bar and 100 l/min that is already ~33 kW. Actual motor power is higher due to pump efficiency. Total efficiency η_total = η_volumetric × η_mechanical (typically 78–88%).

P_hyd [kW] = p [bar] × Q [l/min] / 600 | P_motor = P_hyd / (η_vol × η_mech)

Input

System pressure iMaximum working pressure of the hydraulic system in bar.

bar

Flow rate Q iRequired flow rate in litres per minute.

l/min

Volumetric efficiency iVolumetric efficiency of the pump. Typical: 88–96%.

Mechanical efficiency iMechanical efficiency of the pump. Typical: 85–95%.

Pump displacement iGeometric displacement of the hydraulic pump in cm³ per revolution.

cc/rev

Result

Hydraulic power [kW] —

Motor power required [kW] —

Total efficiency [%] —

Pump actual delivery [l/min] —

Pump speed required [rpm] —