Welcome to the Kurt J. Lesker Company.  

Sign In | Register

Current Region: International (Change) | Contact Us |   RSS   Twitter   LinkedIn   YouTube

Close

Please select your country or region to be
directed to the appropriate Lesker site.

Edwards EXT and nEXT Series


nEXT Features:

  • Patented bearing suspension system minimizes noise and vibration transmitted to the vacuum system.
  • Advanced simulation tool derived rotor design to give better speed and compression performance.
  • Multiple drag stages for higher compression ratios and greater backing pressure tolerance.
  • Permanent magnet upper bearing for a hydrocarbon free vacuum, reduced vibration and minimum wear.
  • Manual vent port with automatic valve accessories for rapid venting and quick cycle times
  • Purge port for safe pumping operation of specialized gases.
  • Automatic wide operating voltage range from 24V to 48V dc for versatility in system integration.

Applications:

  • Mass spectrometry
  • Electron microscopy
  • Research and development
  • High energy physics
  • Industrial
Remanufactured Vacuum Pumps
Remanufactured Pumps

View a list of remanufactured vacuum pumps available from The Kurt J. Lesker Company's Remanufactured Vacuum Pump Division.
View List ▶

Vacuum Pump Repair & Services
Pump Repair & Services

Our factory-trained vacuum pump service technicians are equipped to handle the maintenance and repair of virtually any brand and type of vacuum pump.
View Details ▶


Specifications Table

Pump Model
EXT75DX
(Discontinued)
nEXT85D
nEXT240D
nEXT300D
nEXT400D
Pumping Speed
L/sec (cfm)
NW40: 42
ISO63: 61
DN63CF
(4.50” OD): 61
NW40: 48
ISO63: 84
4.50"CF(DN63CF): 84
DN100 ISO-K or DN100CF
(6.00” OD): 240
DN100 ISO-K or DN100CF
(6.00” OD): 300
DN160 ISO-K or DN160CF
(8.00” OD): 400
Compression Ratios
N2: 1.0 x 1011
He: 1.0 x 106
H2: 5.0 x 104
N2: >1.0 x 1011
Ar: 1.0 x 109
He: 8.5 x 106
H2: 2.1 x 105
N2: 1.0 x 1011
He: 3.0 x 105
H2: 1.0 x 104
N2: 1.0 x 1011
He: 1.0 x 106
H2: 5.0 x 104
N2: 1.0 x 1011
He: 1.0 x 108
H2: 5.0 x 105
Ult. Pressure Torr
(mBar)
5.0 x 10-10
(6.6 x 10-10)
<3.8 x 10-9
(<5.0 x 10-9)
3.75 x 10-10
(5.0 x 10-10)
3.75 x 10-10
(5.0 x 10-10)
3.75 x 10-10
(5.0 x 10-10)
Inlet Flange
DN63CF
(4.50” OD)
DN63CF
(4.50” OD)
DN100CF
(6.00” OD)
DN100 ISO-K
DN100CF
(6.00” OD)
DN100 ISO-K
DN160CF
(8.00” OD)
DN160 ISO-K
Foreline Flange
KF16
KF16
KF25
KF25
KF25
Max. Foreline Press.Torr
(mbar)
3 (4)*
7.5 (10)*
0.75 (1.0)*
2.1 (2.8)*
3.0 (4.0)*
Orientation
Vertical and upright
through to 90%
Vertical and upright
through to 90%
Vertical and upright
through to 90%
Vertical and upright
through to 90%
Vertical and upright
through to 90%
Cooling Method
Ambient Air
(force air and water
cooling available)
Ambient Air
(force air and water
cooling available)
Ambient Air
(force air and water
cooling available)
Ambient Air
(force air and water
cooling available)
Ambient Air
(force air and water
cooling available)

* Natural convection (30-35°C Ambient). Other cooling methods differ.

Charts

Product Datasheet
For a download of the product datasheet, click here.
Pumps FAQ
Click here for answers to some of the most common questions we get asked.
Contact Us
To speak with someone directly, please call 1-412-387-9200 or email international@lesker.com.
Got VacuCADSM?
VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table

Pump
Model
Inlet
Flange
Manual PartNo Price Add To Cart
Pump
Model
Inlet
Flange
Manual PartNo Price Add To Cart
nEXT85D
DN63CF (4.50” OD)
Download PDF
ED-B8G210C01
P.O.R.
nEXT85D
ISO63-K
Download PDF
ED-B8G210B01
P.O.R.
nEXT85D
KF40
Download PDF
ED-B8G210A01
P.O.R.
nEXT300D
ISO100-K
Download PDF
ED-B82200100
$10,226.00
nEXT240D
ISO100-K
Download PDF
ED-B81200100
P.O.R.
nEXT300D
DN100CF (6.00" OD)
Download PDF
ED-B82200200
$12,244.00
nEXT240D
DN100CF (6.00" OD)
Download PDF
ED-B81200200
$11,762.00
nEXT400D
DN160CF (8.00" OD)
Download PDF
ED-B83200400
$14,204.00
nEXT400D
ISO160-K
Download PDF
ED-B83200300
P.O.R.

ORDERING NOTE: All pumps require the following accessories for operation: Controller, Interconnect Cable and Power Cord


Can't Find The Pump You're Looking For? Let our new Pump Selection Guide help! With over 450 vacuum pumps to choose from, the KJLC® Vacuum Pump Selection Guide is designed to help you find one that meets your vacuum requirements. You can narrow down our pump offering by simply choosing from a list of different search criteria. For more information please e-mail international@lesker.com.

Accessories Table

Description Compatible Pumps PartNo Price Add
To Cart
Description Compatible Pumps PartNo Price Add
To Cart
Coolers for ACX75 Air Cooling Accessory
All EXT and nEXT series pumps
ED-B58053075
$335.00
Main Cables (suitable for TIC or relay box)
EUR 2m
All EXT and nEXT series pumps
ED-D40013030
P.O.R.
Main Cables (suitable for TIC or relay box)
UK 2m
All EXT and nEXT series pumps
ED-D40013025
$23.13
Main Cables (suitable for TIC or relay box)
US 2m
All EXT and nEXT series pumps
ED-D40013120
$14.45
TAV5 Vent Valve
All EXT and nEXT series pumps
ED-B58066010
$477.00
TIC RS232 interface cable 2m
All EXT and nEXT series pumps
ED-D39700834
$54.06
TIC Relay Box for Small Backing Pump
All EXT and nEXT series pumps
ED-D39711805
P.O.R.
TIC logic interface cable
All EXT and nEXT series pumps
ED-D39700833
P.O.R.
TIC100 Turbo and Instruments Controllers
All EXT and nEXT series pumps
ED-D39721000
P.O.R.
XDD/DX/EXDC extension cable 2m
All EXT and nEXT series pumps
ED-D39700836
$331.00
TIC200 Turbo Controller
nEXT series pumps
ED-D39712000
P.O.R.
nEXT Bearing Change Tool
nEXT series pumps
ED-B80000805
P.O.R.
nEXT Oil Cartridge
nEXT series pumps
ED-B80000811
P.O.R.
nEXT Oil Cartridge Change Tool
nEXT series pumps
ED-B80000812
P.O.R.
nEXT Radial Fan
nEXT series pumps
ED-B58053175
$404.00
nEXT Replacement Bearing Assembly
nEXT series pumps
ED-B80000810
P.O.R.
nEXT Water Cooling
nEXT series pumps
ED-B80000815
P.O.R.

 

Kurt J Lesker Company Logo

Buy Online or Call
+1 412 387 9200

ISO:9001 The Kurt J. Lesker Company is an ISO:9001 certified company. Copyright ©1996-2017 Kurt J. Lesker Company® All rights reserved.