ECOCAT

GMB40K Heavy Duty Roots Pumps

The new Edwards GMB40K features an innovative composite rotor design made from high-strength alloy steel shafts with lightweight rotor lobes, safely enabling higher running speeds. This patented design offers maximum displacement in an industry-leading footprint. The GMB40K is scalable with multiple foreline configurations. It conforms to global IEC standards and NEMA flange compatibility. ATEX options for hazardous or chemical applications are also available.
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TECHNICAL SPECIFICATIONS

GMB40K Specifications units
flow rate31.000 * 18.250m3/hr

 

CFM

Min. foreline pump capacity (m3/hr)6.500

 

3.825

m3/hr

 

CFM

Maximum pressure in roots pump25

 

18,75

mbar

 

torr

Total input current at ultimate pressure<2.5

 

<3.35

kW

 

hp

final pressure<0.01*

 

<0.008

mbar

 

torr

number of revolutions540 mins

 

3,960 max

min-1
engine powerIEC-30

 

NEMA-40

kW

 

hp

Noise-80dB(A)
vibrations<4

 

<0.16

mm s-1

 

inch s-1

cooling water connections1/2″BSP (IEC version)

 

NPT (NEMA type)

cooling water temperature5-40

 

41-104

°C

 

°F

Minimum cooling water flow

 

(at max. temp.)

10

 

2.6 USgal min-1

liters min-1

 

US gal min-1

cooling water pressure1.0

 

14,7

bar

 

psi

Recommended type of lubricantSynthetic gear oil for roots pump 
quantity of lubricant7

 

1,85

liter

 

US gal

connection flangesInlet DN500

 

Outlet ISO250

 
Weight2260

 

4980

kg

 

lbs

DimensionsSee diagram 
ambient temp.-20-40

 

-4–104

°C

 

°F

* With typical Edwards GXS or IDX based backing pumps at 6,700 m3/hr