Edwards nEXT300D - REBUILT

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In stock
Weight 60 lbs
Pumping Speed 300 l/s-1
Ultimate Pressure < 5 x 10-10 mbar

Edwards nEXT300D Turbomolecular Vacuum Pump - REBUILT

The nEXT300D is a hybrid bearing compound turbo pump available with either an ISO100 or a CF100 inlet flange and has a N2 pumping speed of 300 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 nEXT300D 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 100 ISO-K / DN 100 CF
Outlet flange DN 25 NW
Pumping speed  
N2 300 l/s-1
He 340 l/s-1
H2 280 l/s-1
D / T  
N2 > 1 × 1011
He 1 x 108 / > 1 x 108
H2 5 x 105 / 1 x 106
Ultimate pressure with RV backing pump ISO / CF < 6 x 10-8 / < 5 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) 95 sccm
Forced air cooled, 35°C ambient 115 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) -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: nEXT300D Turbomolecular Vacuum Pump - REBUILT

CODE: B822-00-103 / B82200103  nEXT300D  ISO-100 80W
CODE: B823-21-103 / B82321103  nEXT300T  B90 ISO-100 fine
CODE: B823-22-100 / B82322100  nEXT300T  B180 ISO-100 160W