hydraulic pump

offer HA4VSO hydraulic pump used in open loop ciruits Swashplate axial piston pump provide hydraulic motor

A4VSO hydraulic duplex pump description:

Swashplate axial piston pump	Flow is proportional to the drivek speed and to the displancement
Adjust the angle of awashplate to reslize the stepless variable	Nominal pressure resch to 35Mpa
Good suction charateristic	Long service life,high-precision besrings
Have the structural design of compact, lightweight, low noise characteristics	Hydrostatic balance slipper,improve the life of pump
The sensitivity of control system	With swashplate angle indicator

 Operating procedures

1.Pump should be checked befor running the insatallation is correctt and reliable,whether it is required to install the coupling turn the coupling by hand if stuck phenomenon 2.After initial use or long-term storage operation,should be required before the start of the piston according to instructions of the shell is filled with the work of cleaning fluid ,or not allowed to atart ,check before the start of steering ,the primr mover,check valve into ,the tubing Ee are open. 3. Such as adjusting the system to the minimum vzlue of the relief valve ,non-load start.4.Starting point should be the first move ,after conntinuous operation to work ,After a certain time in operation no abnormal phenomenon ,and then gradually adjust to the required pressuer and flow.Safety relief valve should not exceed the maximum value of the provisions of regulation . Note :Failing to piston damage is not caused by use of three bags of range.

Oil requirement:

The work of this series axial pistonpump with hydraulic oil recommended low condensate oil .antiwear hydraulic oil,aviation hydraulicoil and so on.Normal working oil temperature is 15-65°C.,ideal Working oil temperature is 46-54°C.Fluid in the normal operating temperature to work,should ensure the viscosity of its movement range:16-36mm2/s.Cleanliness control in NAS1683 9 level(or GB/T14036-1993 18/15)or less.Note:Oil cleanliness will signficantly affect the pump life!    Pump for one month or continuous use of the initial period of time ,should be-check the oil cleanliness,and replace or clean the filter.Oil failed to replace oil.    Note:This series of axial piston pump can be difficult to use HF fuel oil. Hydraulic oil,to be ordered when ordering the special model[E-Type].Using the HFA.HFB.HFChydralic oil.the need to reduce ther allowable pressure and driving speed.allows the use of pressure and speed as follows:

Size	40	71	125	180	250	355	500
HFA Rated pressure14MPaPeak plant stress16MPa	1950	1650	1350	1350	1120	1120	1000
HFB Rated pressure14MPaPeak plant stress21MPa	2100	1760	1450	1450	1200	1200	1050
HFC Rated pressure25MPaPeak plant stress28MPa	2100	1760	1450	1450	1200	1200	1050

Note:The speed unit:r/min.need to wash the oil bearing at the mouth of U.flushing pump oil flow reference samples.

hydraulic pump