HPU Sizing & Design Guide

How to size & design
a hydraulic power pack.

A practical walk-through of the numbers that matter — pressure, flow, motor power, tank volume and control — so you can specify a power pack that runs reliably.

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Since 1991ISO 9001:2015650 bar testing1000+ projects

The essentials

Five numbers behind every power pack

Working pressure (bar)
Set by the force your cylinders must produce.

Flow (LPM)
Sets actuation speed — cylinder volume ÷ cycle time.

Motor power (kW)
Pressure × flow, with pump and drive efficiency.

Tank volume (litres)
Enough for cooling, settling and de-aeration.

Control & filtration
Valves, relief, and filtration for clean, reliable oil.

Let the configurator size it

Go deeper

Detailed guides & calculators

Selecting a Power Pack

Matching an HPU to your machine.

Pump Flow Calculation

Flow from cylinder and cycle time.

Motor Sizing

Getting kW right for pressure & flow.

Tank Sizing

Reservoir volume & cooling.

Pressure vs Flow

The two levers of hydraulic power.

Calculators

Free sizing tools.