GMB40K High Capacity Roots Vacuum Booster Pumps

Innovative modular rotor design of high strength alloy-steel shafts with lightweight rotor lobes which safely enable higher running speeds.

Flexible with multiple systemisation options available

The GMB40K is scalable with multiple backing configurations available. Built to global standards IEC and NEMA flange compatibility. ATEX options are also available for use Hazardous or chemical applications.

High capacity pump with a low footprint

Innovative modular rotor technology ensures high performance on the smallest footprint and weight. This ensures the highest degree of flexibility when designing large vacuum systems.

Designed for harsh applications

The GMB40K is a robust pump designed for harsh applications. The innovative modular rotor design is of high strength alloy-steel shafts with lightweight rotor lobes.

This patented construction gives maximum displacement on an industry leading footprint.

  • Steel degassing
  • Vacuum Metallurgy
  • Low density wind tunnels
  • Space simulation
  • Chemical Process Industries

GMB40K Technical data   Units
Pumping speed 31,000 * 18,250

m3/hr

CFM

Minimum backing capacity (m3/hr)

6,500

3,825

m3/hr

CFM

Max Pressure across booster

25

18.75

Mbar

torr

Total input power at ultimate

<2.5

<3.35

KW

hp

Ultimate pressure

<0.01*

<0.008

Mbar

torr

Rotational speed

540 min

3,960 max

rpm
Motor power

IEC - 30

NEMA - 40

KW 

hp

Noise 80 dB(A)
Vibration

<4

<0.16

mm s-1

inch s-1

Cooling water connections 1/2"

BSP (IEC Variant)

NPT (NEMA variant)

Cooling water temperature

5-40

41 - 104

°C

°F

Mimimum cooling water flow

(@max temp)

10

2.6 US gal min-1

Litres min-1

US gal min-1

Cooling water Pressure

1.0

14.7

bar

psi

Recommended lubrication type Synthetic booster gear oil  
Lubricant quantity

7

1.85

Litres

US gal

Connection flanges

Inlet DN500

Outlet ISO250

 
Weight

2260

4980

Kg

lbs

Dimensions See drawing  
Ambient T

-20 - 40

.4 - 104

°C

°F

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