PREVIEW BUILD — noindex, not submitted to search engines
HCIC Hydraulics

Product line B

Hydraulic power units

A hydraulic power unit is specified by three numbers: working pressure, required flow, and reservoir volume. HCIC Hydraulics builds standard units from 7.5 kW to 45 kW, custom units from a duty cycle or schematic, motorhome levelling systems and press systems. Every unit is assembled, filled, run and pressure-tested at 1.5 times working pressure before packing, and the test record ships with it. If you also buy the cylinders from us, flow and bore are sized together rather than quoted independently.

Hydraulic power unit schematic: reservoir, pump and motor, relief valve, directional valve and cylinder
A power unit is a chain. The reservoir sets dwell time, the relief sets what the cylinder has to withstand, and the pump sets both. Sizing one without the other two is how units end up either noisy or hot.

Four ways we build them

Standard power unit

7.5–45 kW, 400 L frame

Assembled, filled and pressure-tested; test record shipped with the unit

Custom power unit

From duty cycle or schematic

Manifold, valve stack and control cabinet built to your sequence

Motorhome levelling

RV and specialty vehicle

Compact reservoir, four-point levelling, low noise

Press systems

Press and forming

High-pressure circuit with accumulator and safety block

How to size the reservoir

The common industrial rule is three to five times pump flow, and the upper end of that range exists for heat rejection — not for oil volume. If the duty cycle is continuous or the ambient temperature is high, go to five times or fit a cooler rather than enlarging the tank.

Pump flowReservoir (3–5×)Typical application
25 L/min75–125 LSmall press or single cylinder
40 L/min120–200 LMachine tool, light duty
63 L/min190–315 LStandard industrial frame
100 L/min300–500 LMulti-cylinder or continuous duty

Power units listed so far

  • power-units · 12 V / 24 V, 3–16 L reservoirs

    DC Hydraulic Power Unit

    Battery-driven hydraulic power unit with a 12 V or 24 V DC motor, gear pump from 0.75 to 8 cc/rev, working pressure up to 250 bar and reservoirs from 3 to 16 litres.

    motor
    12 V or 24 V DC
    pump displacement
    0.75 – 8 cc/rev
    working pressure
    50 – 250 bar (set at 180 bar)
    flow
    3 – 25 L/min

Have a flow and pressure requirement?

Give us the working pressure, the flow you need and the duty cycle. That is enough to specify the motor, pump and reservoir.

Request a quote