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Edwards nEXT400D Compound Turbomolecular Vacuum Pump, 400 l/s, CF 8 inch Inlet, 80 Watts, B83200401


  • MASS SPECTROMETRY: GCMS, LCMS, ICPMS,MALDI inorganic MS, RGA, surface science,leak detectors
  • WHERE nEXT IS FITTED: TEM, SEM, SPM,sample prep benches
  • RESEARCH & DEVEL OPMENT: Chamber evacuation, coating systems, turbopump systems
  • HIGH ENERGY PHYSICS: Beam Lines, accelerators, mobile pump carts, turbopump backing, laser evacuation, medical systems
  • SERIAL COMMUNICATION CONTROL: available with RS323 and RS485 (Windows softwar eincluded)
  • INDUSTRIAL: Glove boxes, coating systems, XRD/XRF systems, lamp evacuation
  • SEMICONDUCTOR: Load locks and transfer chambers
  • SOLAR: Photovoltaics, solar thermal technology

$10,852.56 $13,565.70

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This listing is for the new Edwards nEXT-400D hybrid bearing compound turbomolecular vacuum pumps, operates on 24 to 48 VDC, 80 Watt version, for use with 100 or 200 Watt TIC controllers, reduced start up time to full speed, pumping speed of 400 liters per second (l/s) of nitrogen, Conflat CF 8 inch inlet flange, ISO KF-25 exhaust foreline flange, pump to controller cable attached (1 meter) with Edwards part number B832-00-401. A basic pump system would require a Edwards nEXT400D pump, a TAG or TIC controller, either an air or water cooling accessory and a suitable backing roughing pump. The complete specifications and application brochure in PDF format can be downloaded below.

The Edwards nEXT400D is a hybrid bearing compound turbo pump and available with either ISO-160 or Conflat 8 inch inlet flanges and have a pumping speed of 400 l/s of nitrogen. The nEXT pumps combine Edward’s proven bearing technology (oil lubricated ceramic lower bearing with dry permanent magnetic upper bearing), with improved rotor design and a new molecular drag stage to deliver improved pumping speeds, compression ratios, and true user serviceability. They feature 24 to 48 VDC sensor less motors with a built in drive that is fully compatible with the range of TAG and 100W and 200W TIC controllers. They are available pre-set for either 80W or 160W maximum power, the 80W pumps can be used with the Edwards 100W TIC controllers for low power applications but will require a longer ramp time to full operating speed.

User Friendly Maintenance Technology
The new Edwards nEXT technology have enabled the pumps to be serviced in the field. An interim oil lubrication change can be performed, where access allows, in-situ, typically in less than 5 minutes with the minimum of specialist tooling. A bearing and oil lubrication service, with minimum disassembly can be performed in less than 10 minutes using basic workshop tools and an Edwards tool kit. The nEXT pumps will advise the user when a service is due and what level of intervention is required. The request for service is by a simple flashing LED sequence on the pumps, and by serial communication notification.

Category:
nEXT240 nEXT300 nEXT400
Inlet flange DN100 ISO-K or DN100CF DN100 ISO-K or DN100CF DN160 ISO-K or DN160-CF
Inlet pumping speed (l/s) N2 240 300 400
He 230 340 390
H2 165 280 325
Compression ratio (D) N2 >1 x 1011 >1 x 1011 >1 x 1011
He 3 x 105 1 x 106 1 x 108
H2 1 x 104 5 x 104 5 x 105
Compression ratio (T) N2 >1 x 1011 >1 x 1011 >1 x 1011
He 1 x 106 3 x 106 >1 x 108
H2 1.5 x 104 1 x 105 1 x 106
Interstage pumping speed (l/s) N2 13 13 13
He 13 13 13
H2 11 11 11
Backing/interstage/boost ports NW25 NW25 NW25
Vent/purge port 1/8” BSPP 1/8” BSPP 1/8” BSPP
Critical backing pressure (D) (mbar) 9.5 9.5 10
Critical backing pressure (T) (mbar) 20 20 20
Maximum continuous inlet flow (nitrogen, sccm)
Water cooling (40°C ambient) 45 95 105
Forced air cooling (35°C ambient) 30 115 90
Natural convection (30°C ambient) 10 35 45
Maximum system flange temperature during bakeout (CF only)
Water cooled/forced air cooled 120 / 115° 120 / 115° 120 / 115°
Maximum continuous backing pressure (mbar)
Water cooling (40°C ambient) 6 6.8 7.5
Forced air cooling (35°C ambient) 4.8 7 7.5
Natural convection (30°C ambient) 1 2.8 4
Recommended backing pump* RV12/nXDS10i RV12/nXDS10i RV12/nXDS10i
Peak booster speed m3h-1  (T variants)
RV12 N2 26 26 26
nXDS10i N2 24 24 24
Normal rotational speed (rpm) 60000 60000 60000
Start time to 90% speed (sec) D (T) 115 (150) 145 (190) 180 (210)
Sound pressure level at 1 m (dBA) <45 (+/-3) <45 (+/-3) <45 (+/-3)
Mass (kg) D (T) ISO 5.7 (6) 5.7 (6) 6.5 (6.8)
CF 8.8 (9.1) 8.5 (8.8) 9.5 (9.8)