Welcome to the Kurt J. Lesker Company.  

Sign In | Register

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

Close

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

Representative Image

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

Specifications Table

Pump Model nEXT85D nEXT240D nEXT300D nEXT400D
Pumping Speeds
Ar: 80.0 L/s
H2: 54.0 L/s
He: 78.0 L/s
N2: 84.0 L/s
H2: 165 L/s
He: 230 L/s
N2: 240 L/s
H2: 280 L/s
He: 340 L/s
N2: 300 L/s
H2: 325 L/s
He: 390 L/s
N2: 400 L/s
Max Gas Throughput Ar: 21.0 mbar*L/s
He: 232 mbar*L/s
N2: 60.0 mbar*L/s
Ultimate Pressure
ConFlat Flange
4.99 x 10-10 hPA
4.99 x 10-10 mbar
5.00 x 10-8 Pa
3.75 x 10-10 Torr
ISO-K Flange
7.98 x 10-8 hPA
7.98 x 10-8 mbar
8.00 x 10-6 Pa
6.00 x 10-8 Torr
ConFlat Flange
4.99 x 10-10 hPA
4.99 x 10-10 mbar
5.00 x 10-8 Pa
3.75 x 10-10 Torr
ISO-K Flange
7.98 x 10-8 hPA
7.98 x 10-8 mbar
8.00 x 10-6 Pa
6.00 x 10-8 Torr
ConFlat Flange
4.99 x 10-10 hPA
4.99 x 10-10 mbar
5.00 x 10-8 Pa
3.75 x 10-10 Torr
ISO-K Flange
7.98 x 10-8 hPA
7.98 x 10-8 mbar
8.00 x 10-6 Pa
6.00 x 10-8 Torr
ConFlat Flange
2.00 x 10-10 hPA
2.00 x 10-10 mbar
2.00 x 10-8 Pa
1.50 x 10-10 Torr
ISO-K Flange
9.98 x 10-9 hPA
9.98 x 10-9 mbar
10.00 x 10-7 Pa
7.50 x 10-9 Torr
Max Foreline Pressure 1.90 x 101 hPA
1.90 x 101 mbar
1.90 x 103 Pa
1.43 x 101 Torr
2.50 x 100 hPA
2.50 x 100 mbar
2.50 x 102 Pa
1.88 x 100 Torr
3.00 x 100 hPA
3.00 x 100 mbar
3.00 x 102 Pa
2.25 x 100 Torr
3.00 x 100 hPA
3.00 x 100 mbar
3.00 x 102 Pa
2.25 x 100 Torr
Cooling Method(s) Method
Forced Air
Water
Method
Forced Air
Water
Method
Forced Air
Water
Method
Forced Air
Water
Foreline Flange KF16
KF25
KF25
KF25
Inlet Flange KF40
ISO63-K
DN63CF (4.50” OD)
ISO100-K
DN100CF (6.00" OD)
ISO100-K
DN100CF (6.00" OD)
ISO160-K
DN160CF (8.00" OD)
Compression Ratio(s) Ar: 1.00 x 109
H2: 2.10 x 105
He: 8.50 x 106
N2: 1.00 x 1011
H2: 1.00 x 104
He: 3.00 x 105
N2: 1.00 x 1011
H2: 5.00 x 104
He: 1.00 x 106
N2: 1.00 x 1011
H2: 5.00 x 105
He: 1.00 x 108
N2: 1.00 x 1011
Weight Lbs (kg) 6.39 - 9.48 ( 2.90 - 4.30 ) 12.6 - 19.4 ( 5.70 - 8.80 ) 12.6 - 18.7 ( 5.70 - 8.50 ) 14.3 - 21.6 ( 6.50 - 9.80 )
Technology Dry
Dry
Dry
Dry


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

Charts

Edwards nEXT85D
 
Edwards nEXT85D Edwards nEXT240D Edwards nEXT300D Edwards nEXT400D

Videos

Edwards nEXT85 turbomolecular pump

With an increased customer choice of standard and higher compression variants, Edwards nEXT85 turbomolecular pump is able to offer superior performance for all needs, and yet is the smallest pump in its class on the market.

Runtime: 02:46

Product Datasheet
For a download of the product datasheet, click here.
Vacuum 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. Click to view details or Request a Quote today.
Remanufactured Vacuum
Pumps
Click here to view a list of remanufactured vacuum pumps available from The KJLC's Remanufactured Vacuum Pump Division.
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.
Note:
  • All pumps require a Controller and Power Cord for proper operation. An Inlet Screen, Vent Valve, and Air Cooling Fan may be required for select applications.

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

(Click column headers to sort data)

Accessories Pump
Model
Inlet
Flange
Foreline
Flange
Manual Part
Number
Price Add To Cart
Accessories Pump
Model
Inlet
Flange
Foreline
Flange
Manual Part
Number
Price Add To Cart
nEXT85D
DN63CF (4.50” OD)
KF16
Download PDF
B8G210C01
P.O.R.
nEXT85D
ISO63-K
KF16
Download PDF
B8G210B01
P.O.R.
nEXT85D
KF40
KF16
Download PDF
B8G210A01
P.O.R.
nEXT300D
ISO100-K
KF25
Download PDF
B82200100
$10,852.00
nEXT240D
ISO100-K
KF25
Download PDF
B81200100
P.O.R.
nEXT300D
DN100CF (6.00" OD)
KF25
Download PDF
B82200200
$13,189.00
nEXT240D
DN100CF (6.00" OD)
KF25
Download PDF
B81200200
$11,762.00
nEXT400D
DN160CF (8.00" OD)
KF25
Download PDF
B83200400
$15,073.00
nEXT400D
ISO160-K
KF25
Download PDF
B83200300
P.O.R.

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

For Pump Model(s) Description PartNo Price Add
To Cart
For Pump Model(s) Description PartNo Price Add
To Cart
nEXT400D
Bolting Kit, For DN160CF (8.00" OD) Flange, Including Bolt, Nut, and Washer Set and Copper Gasket
DN160CF-HDKIT
P.O.R.
EXT75DX, nEXT85D
Bolting Kit, For DN63CF (4.50" OD) Flange, Including Bolt, Nut, and Washer Set and Copper Gasket
DN63CF-HDKIT
P.O.R.
nEXT240D, nEXT300D
Bolting Kit, For Dn100CF (6.00" OD) Flange, Including Bolt, Nut, and Washer Set and Copper Gasket
DN100CF-HDKIT
P.O.R.
EXT75DX, nEXT240D, nEXT300D
Clamping Kit, For QF100 (ISO100-K) Flange, Including (8) Cold Steel (Zinc Plated) Clamp and FKM Centering Ring
QF100K-HDKIT
P.O.R.
EXT75DX, nEXT85D
Clamping Kit, For QF16 Flange, Including Aluminum Clamp and FKM Centering Ring
QF16-HDKIT
P.O.R.
nEXT400D
Clamping Kit, For QF160 (ISO160-K) Flange, Including (8) Cold Steel (Zinc Plated) Clamp and FKM Centering Ring
QF160K-HDKIT
P.O.R.
nEXT240D, nEXT300D, nEXT400D
Clamping Kit, For QF25 Flange, Including Aluminum Clamp and FKM Centering Ring
QF25-HDKIT
P.O.R.
EXT75DX, nEXT85D
Clamping Kit, For QF40 Flange, Including Aluminum Clamp and FKM Centering Ring
QF40-HDKIT
P.O.R.
EXT75DX, nEXT85D
Clamping Kit, For QF63 (ISO63-K) Flange, Including (4) Cold Steel Zinc Plated) Clamp and FKM Centering Ring
QF63K-HDKIT
P.O.R.
All EXT and nEXT series pumps
Coolers for ACX75 Air Cooling Accessory
B58053075
$359.00
All EXT and nEXT series pumps
Main Cables (suitable for TIC or relay box)
EUR 2m
D40013030
P.O.R.
All EXT and nEXT series pumps
Main Cables (suitable for TIC or relay box)
US 2m
D40013120
$15.33
All EXT and nEXT series pumps
TAG Turbo and active gauge controller
D39592000
P.O.R.
All EXT and nEXT series pumps
TAV5 Vent Valve
B58066010
$507.00
All EXT and nEXT series pumps
TIC RS232 interface cable 2m
D39700834
$57.36
All EXT and nEXT series pumps
TIC Relay Box for Small Backing Pump
D39711805
P.O.R.
All EXT and nEXT series pumps
TIC logic interface cable
D39700833
P.O.R.
All EXT and nEXT series pumps
TIC100 Turbo and Instruments Controllers
D39721000
P.O.R.
nEXT series pumps
TIC200 Turbo Controller
D39712000
P.O.R.
All EXT and nEXT series pumps
XDD/DX/EXDC extension cable 2m
D39700836
$345.00
nEXT series pumps
nEXT Bearing Change Tool
B80000805
P.O.R.
nEXT series pumps
nEXT Oil Cartridge
B80000811
P.O.R.
nEXT series pumps
nEXT Oil Cartridge Change Tool
B80000812
P.O.R.
nEXT 240, 300, and 400 series pumps
nEXT Radial Fan
B58053175
$404.00
nEXT85
nEXT Radial Fan, AXC85
B8G200820
P.O.R.
nEXT series pumps
nEXT Replacement Bearing Assembly
B80000810
P.O.R.
nEXT series pumps
nEXT Water Cooling
B80000815
P.O.R.