Question 1

What is a hydraulic power unit?

Accepted Answer

A hydraulic power unit (also called a power pack) is a self-contained assembly that supplies pressurised hydraulic oil to a cylinder or actuator. It combines a motor, gear pump, oil reservoir and a manifold of cartridge valves in one compact unit.

Question 2

What pressure can these units reach?

Accepted Answer

The HC series covers system working pressures from 0 to 25 MPa (0–250 bar / 0–3625 PSI). Each model lists its P1/P2/P3 pressure ratings.

Question 3

Can the solenoid voltage differ from the motor voltage?

Accepted Answer

Yes. The solenoid valve coil can be specified independently (12 V / 24 V DC or 110 V / 220 V AC) from the motor voltage.

Question 4

Horizontal or vertical mounting — which should I choose?

Accepted Answer

Both are available. Choose horizontal where vertical clearance is limited, and vertical for a compact footprint; the reservoir must stay correctly oriented for the oil level.

Question 5

The motor runs but the unit won't lift — what's wrong?

Accepted Answer

The usual causes are a lost prime, low or wrong fluid, a clogged suction screen, a relief valve stuck open or set too low, or a worn pump. On 12 V units also check battery voltage and ground.

Question 6

Can you build to my specification?

Accepted Answer

Yes. We customise bore, stroke, mounting, ports, seals, motor voltage, pump displacement, reservoir size and circuit design to your machine.

Question 7

What is the lead time?

Accepted Answer

Lead time depends on the model and order quantity. Contact us with your requirement for a confirmed schedule.

Question 8

How are the units tested before delivery?

Accepted Answer

Every power unit is 100% pressure-tested at 3000 PSI (207 bar) before shipment, and gear pumps are independently life-tested for 300,000 cycles.

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