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3525VQ Vane Pumps with High Speed and High Pressure

Key words:

VANE PUMP
HYDRAULIC PUMP
VQ
VQ Series vane pumps with high performance and high pressure which designed for constraction machinery especially for mobile machinery. Features: 1.Designed by intra-vane structure, reduce the vane pressure to rotor, makes stable performance and longer life in high speed and pressure. 2.To adopt folating structure for side plate,will do a compensation for end-face clearance by automatic,makes high speed and high pressure which can up to 21MPa. 3.The plate is made of dual-metal material, improved the seizure resistance. Complete displacement, composite structure and high pricise spare parts allows convenient maintenance.

Details

Specifications

 

SeriesDisplacement code of the shaft end pumpDisplacement code of the cover end pump
3525VQ21、25、30、32、35、38、4510、12、14、15、17、19、21、25

 

 

Model Code

 

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Installation and Use

 

1. In installation, the tolerance of concentricity between shaft of pump and motor must be less than0.10mm(TIR) by using the flexible coupling; The pump shaft shall not bear the radial and axial load; The carrier must be firm with good rigidity and can fully absorb vibrations.
2. Set the suction pressure at pump inlet port:Recommended inlet pressure is0 to +35Kpa.
3.Oil should be kept clean, pipes and tanks must be thoroughly cleaned; The cleanness level of oil should be within NSA12.
4.Nomal pump operation (at rated conditions)is based on the use of SAE10W oil in the 38℃ to 82°℃ range (or comparable viscosities)
5.Check the inlet, outlet and direction of rotation before starting the pump. Turn the shaft of pump evenly and nimbly by hand after fixing the pump. At the time of first-starting, if the pump does not immediately prime , air should be bled from the pump delivery line .
6. When first put into use, the pump body and oil suction pipeline should be filled with oil, and the pump shall not be allowed to operate without oil.
7. Do not start the pump when the outlet pressure is lower than the inlet pressure. This will cause work noise and blade instability.
8.Cold start condition : When operating SAE10W oil in the 860 to 40cSt range, the speed and pressure should be limited to 50% or less of their respective rated values until the system has warmed up. Extreme caution must be used when starting units when fluid viscosity are greater than 860cSt, Care should be exercised to warm up the entire system, including remote cylinders and motors.
9. At high temperature, viscosities must not be less than13cSt,Temperatures should not exceed 99C because the expectancy of cartridge kite and elastomers will decrease,

 

 

Installation Connection Dimensions

 

 

 

◎ Str. Key shaft

 

ModelCold of shaftABCDEF Key
Width × Length
3525VQ173.29.511.131.75/31.7235.25/35.107.94×40
8686.49.511.134.90/34.8738.4/38.157.94×54

 

 

◎ Spline shaft

 

ModelCold of shaftABCDESpline Data
Number of TeethPitchMajor DiameterMinor DiameterFlast root fit
3525VQ1158.79.511.16.3535.11412/2431.7/31.6726.99/26.64Large
diameter fit

 

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