In short: Indicatively: up to about 4 kW and 30 l/min the compact power pack is the most efficient solution; beyond that — or with multiple simultaneous actuators, heavy continuous duty and heat exchangers — a custom-engineered hydraulic power unit takes over. Gazzera builds both, so we draw the line on the application, not the catalogue.

What changes in architecture

A compact power pack is a monoblock: motor, pump, manifold and reservoir in one compact group, with valve logic mounted on the manifold. A power unit is a plant: frame, larger reservoir with level and temperature control, heat exchanger where needed, multiple independent circuits, electrical cabinet. The first integrates into the machine; the second often IS part of the machine.

The signs you need a full power unit

Several simultaneous movements with different flows; continuous duty with oil heating up; demanding filtration and monitoring requirements; power beyond compact motor frames. If you recognise at least two, start directly from a power unit design: stretching a compact pack upwards costs more than designing right.

And the cost?

For the same function, the compact pack costs significantly less: less material, less assembly, a shorter BOM. That is why honest sizing serves both sides: proposing a power unit where a compact pack suffices shows at the first competing quote. Our price-factors guide explains in detail what drives cost.

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Compact power pack or full power unit?

What changes in architecture

The signs you need a full power unit

And the cost?

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