Ningbo Economic And Technological Development Zone Haowei Hydraulic Equipment Co., Ltd.
Main products:hydraulic pump,hydraulic motor,hydraulic parts,hydraulic speed reducer,hydraulic valves
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Contact Us
  • Contact Person : Ms. Lau Etta
  • Company Name : Ningbo Economic And Technological Development Zone Haowei Hydraulic Equipment Co., Ltd.
  • Tel : 86-574-26869705
  • Fax : 86-574-86868220
  • Address : Zhejiang,Ningbo,731# Mingzhou road,Beilun District,Ningbo City,Zhejiang Province
  • Country/Region : China
  • Zip : 315800

axial piston pump (Rexroth A4VSG)

axial piston pump (Rexroth A4VSG)
Product Detailed
axial piston pump(A4VSG ) used for hydraulic drives in open loop ciruits. It is variable displacement hydraulic pump.

axial piston pump

HA4VSG variable displacement axial  piston pump description:

Swashplate axial piston pumpFlow is proportional to the drivek speed and to the displancement
Adjust the angle of awashplate to reslize the stepless variableNominal pressure resch to 35Mpa
Good suction charateristicLong service life,high-precision besrings
Have the structural design of compact, lightweight, low noise characteristicsHydrostatic balance slipper,improve the life of pump
The sensitivity of control systemWith swashplate angle indicator

 Fuid choice:

1In order to ensure the selection of fluid troublefree and highperformance work,in the system design period,you should choose the hydraulic fluid of the hydraulic system be based on conditions carefully.All the mineral oil are extent applicable for the axial pistion unit,which application of the basic division of the above depends ofn the relationship of the water,temperature and viscosity,and consider oxidation and consider oxidation and corrosion protection,material compatibility,air and water separation properties. 2 In order to ensure long service life of equipment,must be good and reliable filter,fluid pollution of particles should not exceed the following levels:’   Grade 18/15 ---in accordance with GB/T 14039-1993    Grade 6---in accordance with SAE    Grade 18/15---in accordance with ISO/DIS4406    Fluid in the high temperature [75°C≤t,t≥90°C]:    Grade 17/14—in accordance with GB/T 14039-1993    Grade 5----in accordance with SAE    Grade 17/14—in accordance with ISO/DIS4406

3 In order the choose the correct hydraulic fluid,you must be aware of the ambient temperature related to the working temperature,the temperature requirements is no more than 90 °C,working viscosity is 16-36 mm2 per second.Please refer to following chart,choose the viscosity of hydraulic fluid,select the highest level of viscosity

 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[EType].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

4071125180250355500

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.

 Operate procedure1.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.

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