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GPM3 Series

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CBMW Type Compound Gear Pumps

  • Description
  • Parameters and character
  • Our services
  • Inquiry

CBMW series compound gear pump contains a monopolegear pump and a stable flow diverting valve,supply one main olcircuit and one stable oil circuit for the hydraulic system,also upto international advanced level.With characters:high pressure,high volumetric efficiency,long usage,with overloadprotection,can be widely used in every hydraulic system.

Model CBMW Dimensional Data


Parameters and character

Parameters

 

CBMW-F11

CBMW-F13.5

CBMW-F16

CBMW-F18

Displacement

mL/r

11

13.5

16

18

The Rated Pressure

MPa

 

18

Maximum Pressure

MPa

22.5

Regulating Range

MPa

10-20

Rated Speed

r/min

2000

Speed  Range

r/min

1000-2500

Constant Flow

L/min

5

7

9

12

Our services

INSTALLATION NOTES  

Before starting the system on a continuous basis, we suggest to adopt some simple precautions:

l Check for the direction of rotation of the pump to be consistent with the drive shaft one.

l Check for the proper alignment of pump shaft and motor shaft: it is necessary that the connection does not include axial or radial loads.

l Protect drive shaft seal during pump painting. Check if contact area between seal ring and shaft is clean: dust could provoke quicker wear and leakage.

l Remove all dirt, chips and all foreign bodies from flanges connecting inlet and delivery ports.

l Ensure that intake and return pipes ends are always below fluid lever and as far from each other as possible.

l Install the pump below head, if possible.

l Fill the pump with fluid, and turn it by hand.

l Disconnect pump drain during startup to bleed air off the circuit.

l At first startup, set pressure limiting valves at min. value possible.

l Avoid lower rotation speed than min. allowed with pressure higher than continuous max. pressure.

l Do not start the system at low temperatures under load conditions or after long stops (always avoid or limit load starting for pump longer life).

l Start the system for a few minutes and turn on all components; bleed air off the circuit to check its proper filling.

l Check fluid lever in the tank after loading all components.

l At last, gradually increase pressure, continuously check fluid and moving parts temperature, check rotation speed until you reach set operating values that shall be within the limits indicated in this catalogue.

 

 

Hydraulic Fluid  

Use specific mineral oil based hydraulic fluids having good anti-wear, anti-foaming, antioxidant, anti-corrosion and lubricating properties. Fluids should also comply with DIN51525 and VDMA 24317 standards and get through 11th stage of FZG test.

For the standard models, the temperature of the fluid should not be between -10℃ and +80℃。

 

Fluid kinematic viscosity ranges are the following:

Allowed Value

6÷500 cSt

Recommended value

10÷100 cSt

Value allowed at startup

2000 cSt

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