ZF Hydraulic & Pneumatic Parts Co., Ltd

ZF Hydraulic & Pneumatic Parts Co., Ltd

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Products > Vane pump > > Double variable displacement vane pump
Product name : Double variable displacement vane pump
Item : 08
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Details:
Double variable displacement vane pump


Variable Displacement Double Vane Pump(Low Pressure Type)
Feature:
1.be combinated with two variable vane pumps, use a common driveshaft.
2.be drived by a motor in order to reduce the assembly space.
3.can supply the pressure and flow in different circuit loop at the same time.
4. assembly easy, is available in the motor pump.
 
SPECIFICATION:
MODEL Delivery at on load L/min Pressure Adj
Range
kgf/cm2
Shaft Speed
rpm

Max Pressure kgf/cm2

Weight Kg
1800rpm 1500rpm Max Min Flange

VP-DF-12-A

VP-DF-12-B

VP-DF-12-C

VP-DF-12-D
 

12+12 10+10

8-20

15-35

30-55

50-70
 

1800 800

20

35

55

70
 

9.0

9.0

9.0

9.0
 


VP-DF-20-A

VP-DF-20-B

VP-DF-20-C

VP-DF-20-D

20+20

17+17
8-20

15-35

30-55

50-70

1800 800
20

35

55

70


9.0

9.0

9.0

9.0


VP-DF-30-A

VP-DF-30-B

VP-DF-30-C

VP-DF-30-D

30+30 25+25
8-20

15-35

30-55

50-70

1800 800


20

35

55

70


17.0

17.0

17.0

17.0


VP-DF-40-A

VP-DF-40-B

VP-DF-40-C

VP-DF-40-D

40+40 35+35
8-20

15-35

30-55

50-70

1800 800
20

35

55

70


17.0

17.0

17.0

17.0


Application of double vane pump VP-20-20:
 
The double vane pump VP-20-35 is composed of two single-stage vane pumps VP8-70 installed in a pump body and connected in parallel on the oil circuit. The rotors of the two vane pumps are driven by the same transmission shaft and have their own independent oil outlets. The two pumps can be of equal flow or unequal flow .
 
The double vane pump VP-30-30 is often used in the special machine tool with the requirements of rapid feed and working feed. At this time, the double vane pump VP-40-70 is composed of a small flow and a large flow pump. In case of rapid feed, the two pumps supply oil at the same time (at this time, the pressure is low). In case of working feed, the small flow pump supplies oil (at this time, the pressure is high). At the same time, the large flow pump is unloaded on the oil system. Compared with a high-pressure and large flow pump, it can save energy and reduce oil heating. This kind of double vane pump is also commonly used in the hydraulic system of machine tools, which needs two independent oil circuits that do not affect each other. Our double vane pmps model have VP1-8-35, VP1-12-35, China double vane pump VP-40-40, VP-12-70 etc.

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