Edwards nEXT400D - REBUILT

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In stock
Weight 20 lbs
Pumping Speed 400 l/s-1
Ultimate Pressure < 1 x 10-10 mbar

Edwards nEXT400D Turbomolecular Vacuum Pump - REBUILT

The nEXT400D is a hybrid bearing compound turbo pump available with either an ISO-160 or a CF-160 inlet flange and has a N2 pumping speed of 400 l/s-1. nEXT pumps combine our proven bearing technology (oil lubricated ceramic lower bearing with dry permanent magnetic upper bearing), an improved rotor design with a new molecular drag stage to deliver improved pumping speed and compression ratios, and true user serviceability. They feature 24V to 48Vd.c. sensor less motors with a built in drive that is fully compatible our range of TAG and TIC controllers. They are available pre-set for 80W or 160W maximum power, the former enabling use with our 100W TIC controllers are also recommended for pumping Argon, but with a longer ramp time to full operating speed.

A basic pump system would require a nEXT400D pump, a TAG or TIC controller, either an air or water cooling accessory or a suitable backing pump.

  • Value for money - exceptional pumping speeds and compression ratios
  • No unplanned downtime - field proven reliability in the most demanding environments
  • Easy integration - standard fit in many scientific instruments
  • Reliability for peace of mind - over 200,000 turbomolecular pumps installed
  • Low cost of ownership - end user serviceable

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

Inlet flange DN 160 ISO-K / DN 160 CF
Outlet flange DN 25 NW
Pumping speed  
N2 400 l/s-1
He 390 l/s-1
H2 325 l/s-1
Compression ratio D / T  
N2 > 1 × 1011
He 1 x 10>8 / > 1 x 108
H2 5 x 105 / 1 x 106
Ultimate pressure with RV backing pump ISO/CF < 1 x 10-8 / < 1 x 10-10 mbar
Recommended backing pump* RV12 / nXDS10i
Vent port 1/8 inch BSP female
Purge port 1/8 inch BSP female
Max continuous inlet flow (Nitrogen) †  
Water cooling (water at 15°C, ambient temp at 40°C) 105 sccm
Forced air cooled, 35°C ambient 90 sccm
Pump rotational speed  
Nominal rotational speed 60,000 rpm
Standby rotational speed Variable from 33,000 to 60,000 rpm (42,000 rpm default)
Programmable power limit settings Variable from 50-200W (160W default)
Start time to 90% speed D / T 160 W 155 / 175
Analogue outputs Pump rotational speed;
Power consumption; Pump temp; Controller temp
Cooling method Forced air / water
Ambient air temp for forced air cooling 5 - 35°C
Min cooling water flow rate (water 15°C) 15 l/h-1
Water temp range 10 - 20°C
Max inlet flange temp 80°C
Operating attitude Vertical and upright, through to
Horizontal +/- 2°
Noise level at 1 metre < 45 dB(A)
Max magnetic field pump can tolerate 5 mT
Recommended controller TIC 200 turbo and instrument controller
Quiescent electrical power Typically 20W

Specs Link

Type Label Description Download
Edwards nEXT Series - REBUILT Instruction Manual Download

Need modifications to this item? PTB Sales' expert team of engineers can configure products to your specific needs.

Edwards MODEL: nEXT400D Turbomolecular Vacuum Pump - REBUILT

CODE: B832-00-300 / B83200300  nEXT400D  ISO-160 160W
CODE: B832-00-318 / B83200318  nEXT400D  ISO-160 160W
CODE: B832-00-401 / B83200401  nEXT400D  CF-160 80W
      B832-00-301 / B83200301  nEXT400D  ISO-160 80W
      B832-00-400 / B83200400  nEXT400D  CF-160 160W
      B832-00-816 / B83200816  nEXT400DHQ ISO-160 160W
      B832-30-300 / B83230300  nEXT400DL  ISO-160 160W
      B832-00-816 / B83200816  nEXT400IID   160W
      B833-00-300 / B83300300  nEXT400T HC  ISO-160 160W
      B833-00-301 / B83300301  nEXT400T HC  ISO-160 80W
      B833-00-400 / B83300400  nEXT400T HC  CF-160 160W 
      B833-00-401 / B83300401  nEXT400T HC  CF-160 80W