Variable displacement axial piston pumps
A complete range for open and closed circuits
The variable displacement axial piston pumps in the Hydraut range cover a wide spectrum of open and closed circuit applications, from stationary industrial systems to high-power mobile hydrostatic transmissions.
Each series is available with multiple control configurations — mechanical, hydraulic and electronic — to precisely match OEM requirements, from compensator selection to integration in multistage systems with through-drive.
The range includes series from Hydraut, Hytek and Huade.
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Catalogue
Swashplate variable displacement axial piston pumps, open circuit – HSP Series
The HSP series operates up to 280 bar and covers displacements from 18 to 140 cc/rev with a peak pressure of 350 bar. The 9-piston construction geometry ensures smooth and consistent flow even under high load.
The entire range is high-speed, and its wide selection of controllers makes it suitable for any circuit layout.
Swashplate variable displacement axial piston pumps, open circuit – PQ Series
The PQ series covers displacements from 15 to 70 cc/rev with a peak pressure of 250 bar. The design focused on low-noise operation reduces acoustic emissions during full-pressure phases. Load-sensing flow management (for variants with HL compensators) optimises the energy efficiency of the entire circuit, limiting heat generation even during the most intensive duty cycles.
Swashplate variable displacement axial piston pumps, open circuit – HP3VO Series
The HP3VO series covers displacements from 40 to 85 cc/rev with a nominal pressure of 280 bar and a peak pressure of 320 bar. Its high power-to-weight ratio and excellent suction characteristics make it particularly suited for direct installation on mobile transmissions.
The through-drive connection enables a second pump to be driven, optimising system compactness.
Swashplate variable displacement axial piston pumps, open circuit – HP1VO Series
The HP1VO series covers displacements from 60 to 260 cc/rev and reaches a nominal pressure of 350 bar with a peak pressure of 400 bar, positioning it as the reference for high-power applications. Available in self-priming and integrated charge pump (HP1VAO) variants; a secondary pump can be coupled via through-drive.
Swashplate variable displacement axial piston pumps, open circuit – HA10V(S)O Series
The HA10V(S)O series covers displacements from 18 to 140 cc/rev across seven sizes, with pressure and suction ports configurable in rear or lateral direction for maximum installation flexibility. The DFR controller ensures load-independent flow control, with precise dynamic response even in the most variable duty cycles.
Swashplate variable displacement axial piston pumps, closed circuit – HA4VTG Series
The HA4VTG series, with displacements from 71 to 100 cc/rev and a nominal pressure of 400 bar, stands out for its ease of integration in tight spaces. Built-in maximum pressure valve and charge pump eliminate the need for external components, simplifying system architecture even in the most complex hydrostatic transmissions.
Swashplate variable displacement axial piston pumps, closed circuit – HP2VC Series
The HP2VC series covers displacements from 56 to 180 cc/rev at up to 3,600 rpm. The double maximum pressure valve ensures full protection of the connected equipment, while the automatic displacement reduction before the limiter engages preserves the service life of the entire transmission.
Swashplate variable displacement axial piston pumps, open circuit – HD-A4VSO Series
La serie HD-A4VSO copre cilindrate da 40 a 500 cc/giro — inclusa la taglia intermedia da 370 cc — con una pressione nominale di 350 bar e una pressione di picco di 400 bar. Progettata per impianti industriali pesanti che richiedono continuità operativa, si distingue per la semplicità di integrazione nell'impianto e per un sistema di controllo modulare con oltre tredici configurazioni disponibili.
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