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Edwards EXT555HFE Turbo Vacuum Pump - REBUILT

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Manufacturer Part Number: B77701000
Edwards EXT555HFE Turbo Vacuum Pump - REBUILT
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Edwards EXT555HFE Turbomolecular Vacuum Pump - REBUILT

Our range of EXT turbomolecular and compound molecular pumps and EXC Controllers uses state-of-the-art technology to provide reliable, hydrocarbon-free, high and ultra high vacuum.

Questions? Please call our toll free number at 866-332-0500 or send an email to our sales team!

Main inlet flange DN 160 ISO-K / DN 160 CF
Outlet flange DN 25 NW
Interstage port (Hi variants) DN 25 NW
Vent port 1/8 inch BSP
Purge port 1/8 inch BSP
Inlet pumping speed*
    N2 540 l/s-1
    He 580 l/s-1
    H2 500 l/s-1
    Ar 510 l/s-1
Interstage pumping speed (Hi variants)
    N2 8 l/s-1
    He 6 l/s-1
    H2 8 l/s-1
Compression ratio
    N2 > 1010
    He 108
    H2 106
    Ar > 1010
Ultimate pressure (CF variant) < 1010 mbar
Recommended backing pump RV12
Maximum continuous inlet pressure (N2, He, H2)**
    forced air cooled, 30°C ambient 1 x 10-3 mbar
    forced air cooled, 35°C ambient 5 x 10-4 mbar
   water cooling at 15°C 2 x 10-3 mbar
Nominal rotational speed 50,000 rpm
Start time to 90% speed
    EXC250 5 min
    EXC300 6.5 min
    EXDC160 8 min
Cooling method forced air /  water
Ambient air temperature for forced air cooling 0 - 35°C
Recommended cooling water flow rate (water at 15°C)     15 lh-1
Water temperature 10 - 20°C
Maximum inlet flange temperature 80°C
Noise level at 1m < 60 dBA
Maximum magnetic field (standard envelopes)
Axial < 7 mT
Radial < 3 mT
Maximum magnetic field (martensitic envelopes)
Axial < 50 mT
Radial < 50 mT
Recommended controllers EXC250, EXC300
Quiescent power consumption 35 W


* Measured without inlet screen. Inlet screens are supplied fitted and reduce speed by up to 20%

** With backing pressure < 0.3 mbar. Above this inlet pressure rotational speed drops.

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Edwards EXT555HFE Turbomolecular Vacuum Pump - REBUILT

B77701000 / B777-01-000  EXT555H  DN 160 ISO-K
B77702000 / B777-02-000  EXT555H  DN 160 CF
B77705000 / B777-05-000  EXT555HI  DN 160 ISO-K
B77707000 / B777-07-000  EXT555HF  DN 160 ISO-K   
B77708000 / B777-08-000  EXT555HF  DN 160 CF 

B72821000 / B728-21-000  EXT501