Close

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

Representative Image

Edwards EM Series (Large)

The E2M Two Stage Oil Sealed Rotary Vane Pump is the tried and tested solution for applications when better ultimate vacuum down to 10-3 mbar is needed. Available in sizes from 40 to 275 m3h-1 it features a robust design for reliable and stable high vacuum performance.

Features

  • Reliability: Reliable and stable process - effective lubrication even under high gas loads
  • Robust: No contamination of process - oil and air suck-back protection
  • Performance: Long and trouble free life - industrial roller bearings on drive shaft

Applications

  • Furnaces and metallurgy
  • Optical and display coating
  • Pharmaceutical freeze drying
  • Refrigeration and air conditioning system evacuation
  • Transformer and cable drying
  • Brake line evacuation
  • Industrial leak detection
  • Plasma Coating and Cleaning

Positive Pressure Oil Lubrication:

These pumps have a well-proven, positive pressure oil lubrication system developed by Edwards to ensure correct lubrication in all operating modes, particularly under high gas loads where oil starvation is a common problem with other pumps.

  • Integral oil pump ensures an adequate oil flow through the stator/rotor assembly at all times
  • Only clean degassed oil is supplied to the high vacuum stage on two stage pumps
  • System is much less dependent on correct oil levels in the reservoir than other pump designs
  • Pumps can operate with oil levels as low as 50–70% of the maximum fill level (NOT RECOMMENDED)

Specifications Table

Pump Model E2M275 E2M40 E2M80 E2M175
Pumping Speeds
50 (Hz)
150 CFM
70.8 L/min
70.8 L/s
255 m3/hr
60 (Hz)
180 CFM
5100 L/min
85.0 L/s
306 m3/hr
50 (Hz)
21.8 CFM
616 L/min
10.3 L/s
37.0 m3/hr
60 (Hz)
25.9 CFM
733 L/min
12.2 L/s
44.0 m3/hr
50 (Hz)
43.5 CFM
1233 L/min
20.6 L/s
74.0 m3/hr
60 (Hz)
53.0 CFM
1500 L/min
25.0 L/s
90.0 m3/hr
50 (Hz)
94.2 CFM
2666 L/min
44.4 L/s
160 m3/hr
60 (Hz)
115 CFM
3266 L/min
54.4 L/s
196 m3/hr
Max Water Vapor
Pumping Rate
(with gas ballast)
2500 g/hr 200 g/hr 300 g/hr 2400 g/hr
Ultimate Pressure
Partial With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.80 x 10-3 Torr
Partial Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Total With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.75 x 10-3 Torr
Total Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Partial With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.80 x 10-3 Torr
Partial Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Total With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.75 x 10-3 Torr
Total Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Partial With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.80 x 10-3 Torr
Partial Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Total With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.75 x 10-3 Torr
Total Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Partial With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.80 x 10-3 Torr
Partial Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Total With Gas Ballast
5.00 x 10-3 hPA
5.00 x 10-3 mbar
5.00 x 10-1 Pa
3.75 x 10-3 Torr
Total Without Gas Ballast
1.00 x 10-3 hPA
1.00 x 10-3 mbar
1.00 x 10-1 Pa
7.50 x 10-4 Torr
Cooling Method(s) Method
Convection
Method
Convection
Method
Convection
Method
Convection
Motor Power HP (kW) 11.5 ( 8.55 ) 2.01 ( 1.50 ) 4.02 ( 3.00 ) 8.72 ( 6.50 )
Inlet Flange ISO63-F
ISO40-F
ISO40-F
ISO63-F
Exhaust Flange KF40
25mm NPT
25mm NPT
KF40
Oil Type(s) Hydrocarbon Oil
Part: KJLSS19G5

Hydrocarbon Oil
Part: KJLSS19G1

Hydrocarbon Oil
Part: KJLSS19G1

Hydrocarbon Oil
Part: KJLSS19G5

Oil Capacity Quarts (Liters)
*Unless otherwise noted
24.2 ( 23.0 ) 3.15 ( 3.00 ) 3.15 ( 3.00 ) 21.0 ( 20.0 )
Noise db(A) 75.0 65.0 70.0 75.0
Compression Stages 2
2
2
2
Series Standard
Standard
Standard
Standard
Weight Lbs (kg) 488 ( 222 ) 165 ( 75.0 ) 224 ( 102 ) 449 ( 204 )
Dimensions in. (mm.) 43.0 x 15.9 x 20.9
(1091 x 404 x 532 )
26.2 x 9.45 x 15.6
(665 x 240 x 397 )
31.3 x 10.5 x 16.9
(795 x 266 x 430 )
36.9 x 15.9 x 20.9
(938 x 404 x 532 )
Technology Wet
Wet
Wet
Wet


Dimensional Drawings

BOCEd E2M40
 
BOCEd E2M40 BOCEd E2M80 BOCEd E2M175 BOCEd E2M275

Charts


Product Brochure
For a download of the Edwards Oil Sealed Vacuum Pump & Booster Solutions for Industrial Processes Brochure, click here.
Vacuum Pump Repair
& Services
World class service center for scheduled maintenance, evaluation, and vacuum pump repair.
Request a Service Quote
Request a Pump RMA
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 are asked.
Contact Us
To speak with someone directly, please call +1 412 387 9200 or email international@lesker.com.
Notes:
  • ATEX versions available; please call or visit our website for more information.
  • One charge of hydrocarbon oil will be provided with each pump.
  • PFPE prepared and Azide resistant models are available.

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
Voltage &
Phases
Manual Part
Number
Price In Stock Add To Cart
Accessories Pump
Model
Inlet
Flange
Voltage &
Phases
Manual Part
Number
Price In Stock Add To Cart
E2M40
ISO40-F
380/400 VAC, 50 Hz, 230/460 VAC 60 Hz, 3-Ø
Download PDF
A36404940
P.O.R.
Call for Availability
E2M80
ISO40-F
380/400 VAC, 50 Hz, 230/460 VAC 60 Hz, 3-Ø
Download PDF
A36504940
P.O.R.
Call for Availability
E2M175
ISO63-F
380/400 VAC, 50 Hz, 230/460 VAC 60 Hz, 3-Ø
Download PDF
A36604940
P.O.R.
Call for Availability
E2M275
ISO63-F
380/400 VAC, 50 Hz, 230/460 VAC 60 Hz, 3-Ø
Download PDF
A36704940
P.O.R.
Call for Availability

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 Part Number Price In Stock Add
To Cart
For Pump Model(s) Description Part Number Price In Stock Add
To Cart
All EM Series
Pumps
Bolted NW40 to NW40KF Adapter
ED-A1516
P.O.R.
Call for Availability
All EM Series
Pumps
Bolted NW50 to NW50KF Adapter
C10005080
P.O.R.
Call for Availability
All EM Series
Pumps
Clamp for KF40 Flange
QF40-150-C
P.O.R.
In Stock
All EM Series
Pumps
Clamp for KF50 Flange
QF50-200-C
P.O.R.
In Stock
E2M40, E2M80
Clamping Kit, For QF40 Flange, Including Aluminum Clamp and FKM Centering Ring
QF40-HDKIT
P.O.R.
Call for Availability
All EM Series
Pumps
Fluorocarbon Centering Ring
for KF40 Flange
QF40-150-SRV
$13.10
In Stock
All EM Series
Pumps
Fluorocarbon Centering Ring
for KF50 Flange
QF50-200-SRV
$15.10
In Stock
All EM Series
Pumps
KJLSS 19 Oil (1 gallon)
KJLSS19G1
$45.00
In Stock
All EM Series
Pumps
KJLSS 19 Oil (1 quart)
KJLSS19Q1
$17.00
In Stock
E1M40
E1M80
E2M80
Oil Mist Eliminator
A46203000
P.O.R.
Call for Availability
E2M175
E1M175
E2M275
E1M275
Oil Mist Eliminator
A46204000
P.O.R.
Call for Availability
E1M40
Repair Kit
A36301131
P.O.R.
Call for Availability
E1M80
E2M80
Repair Kit
A34501131
P.O.R.
Call for Availability
E2M40
Repair Kit
A34401131
P.O.R.
Call for Availability
E1M40
Replacement Blade (Vane) Kit
ED-A34401050
P.O.R.
Call for Availability
E1M80
Replacement Blade (Vane) Kit
A34501050
P.O.R.
Call for Availability
E2M40
Replacement Blade (Vane) Kit
A36401050
P.O.R.
Call for Availability
E2M80
Replacement Blade (Vane) Kit
A36501050
P.O.R.
Call for Availability