Piston pumps (DUPLOMATIC)

VARIABLE DISPLACEMENT AXIAL-PISTON PUMPS VPPM

For medium-high pressure

The VPPM pumps are variable displacement axial-piston pumps with variable swash plate, suitable for applications with open circuits.

  • They are available in three different frame sizes with maximum displacements up to 29, 46, 73 and 87cm3/rev.
  • The pump flow rate is proportional to the rotation speed and to the angle of the swash plate, which can be continuously modulated. The maximum and minimum angle can be limited mechanically via suitable regulating screws.
  • The pumps feature medium-high working pressures (up to 280 bar constant and 350 bar peak). Thanks to some particular design features, these pumps are able to bear high axial and radial loads on the shaft.
  • They are usually supplied with a ISO 3019/2 mounting flange, with the exception of the rear and intermediate pumps, if multiple pumps, which are only available with a SAE J744 2-holes flange and a SAE J744 splined shaft.
  • They are available with seven different types of regulating control, each according to the application needs.

VARIABLE DISPLACEMENT AXIAL-PISTON PUMPS VPPL

For medium-low pressure

The VPPL are variable displacement axial-piston pumps with variable swash plate, suitable for applications with open circuits and intermediate pressures.

  • They are available in seven nominal sizes, with displacements of 8, 16, 22, 36, 46, 70 and 100 cm3/rev.
  • The pump flow rate is proportional to the rotation speed and to the angle of the swash plate, which can be continuously modulated. The maximum and minimum angle can be limited mechanically via suitable regulating screws. 
  • They are usually supplied with a SAE J744 2-hole flange and a SAE J744 cylindrical with key shaft.
  • They are available with four different types of regulating control, each according to the application needs.

HIGH PRESSURE SELF-REGULATING PUMPS HPR

For open loop
  • HPR pumps are variable displacement axial-piston pumps with swash plate design, suitable for applications with open circuits.
  • Seven frame sizes are available, from 55 up to 280 cm3/rev.
  • The pump flow rate is proportional to the shaft speed and to the swash plate angle, which can be continuously modulated. The maximum angle can be limited
  • mechanically by means of an adjustment screw.
  • Due to the special design, these pumps are able to operate at high working pressures (420 bar continuously and 500 bar peak)
  • All the pumps are equipped with a noise reduction device.
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Product Manager

Paulo Faustino
hidraulica@bibus.pt