Vane pumps are the established choice for hydraulic circuits where low noise operation, flow regularity and installation compactness are the primary selection criteria. The Hydraut range includes fixed and variable displacement series, all Hydraut-branded and backed by a 24-month warranty, for applications ranging from small power units to industrial systems with medium-to-high pressure requirements.
The variable displacement range is designed for small hydraulic power units where space and energy consumption are critical constraints. Available in single and double configurations, these pumps operate at low pressure with the option for direct coupling to an electric motor.
The fixed displacement range covers a broader application field, from mobile machinery to industrial systems. Single, double and through-drive configurations allow adaptation to any system architecture.
Vane pumps guide
A vane pump moves oil with sliding vanes housed in a rotor that turns inside an elliptical or eccentric ring. Compared with gear pumps it offers lower noise and lower flow pulsation; compared with piston pumps it is simpler and more economical at medium pressures. It is the established choice for power units, machine tools, presses and mobile machines up to about 210 bar.
The Hydraut range includes fixed and variable displacement vane pumps, all Hydraut-branded, assembled and tested in Italy and covered by a 24-month warranty.
| Series | Displacement | Displacement range (cc/rev) | Pressure (bar) | Max speed (rpm) | Typical use |
|---|---|---|---|---|---|
| VPV | Variable | 5.3–22.2 | 70 | 1,800 | Small power units, also with hollow-shaft motor |
| VH10 / VH20 | Fixed | 6.6–42.4 | up to 172 | 4,500 | Compact installations, tandem versions |
| HS | Fixed | 7.5–237 | 170 | 1,800 | Industrial systems |
| HQ | Fixed | 7–237 | 210 | 2,700 | Mobile machinery and heavy duty cycles |
A variable displacement pump such as the VPV adjusts its flow to the demand of the circuit through a mechanical pressure regulator: when the actuators stop, the flow drops and so do absorbed power and oil temperature. It is the ideal solution for small power units that spend long periods holding pressure. A fixed displacement pump (VH, HS, HQ) delivers a constant flow for each rotation and suits circuits with continuous duty.
The VPV works up to 70 bar, the VH series up to 172 bar, the HS series up to 170 bar for industrial applications and the HQ series up to 210 bar for mobile machines and more demanding cycles.
VH pumps reach 4,500 rpm in very compact dimensions; HQ pumps reach 2,700 rpm for direct drive from engines and transmissions; HS and VPV pumps work up to 1,800 rpm, typical of electric motors.
Double pumps (for example VH tandem versions V2010 and V2020) supply two independent circuits from a single shaft, such as a fast approach circuit and a high-pressure circuit on a press. HS and HQ series are also available with through-drive.
HS, HQ and VH pumps also work with water glycol and phosphate ester fluids. In HS and HQ pumps the internal cartridge can be replaced without removing the pump from the machine, reducing unplanned downtime.
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When noise and flow pulsation matter, for example on machine tools and power units in occupied areas. Vane pumps run more quietly and deliver a smoother flow at medium pressures.
It delivers only the flow the circuit needs: when the actuators stop, the flow drops and so do energy consumption and oil heating. The VPV series is designed for small power units and can be coupled directly to a hollow-shaft electric motor.
They share the same construction. The HS series reaches 170 bar and 1,800 rpm for industrial systems; the HQ series reaches 210 bar and 2,700 rpm for mobile machinery and heavier duty cycles.
Yes, on the HS and HQ series: the internal cartridge can be replaced with the pump installed, reducing machine downtime.
All Hydraut vane pumps are assembled and tested in Italy and have a 24-month warranty. Stock items ship in 24–48 hours.
