Atlas Copco
Railway Air Systems
Oil-free Scroll Compressor SFR 2-14
7
2
6
4
5
1
3
8
1 Optimized cooling fan to obtain a fully balanced compressor for
smooth running
5 Heavy duty air intake filter for efficient operation in dusty
environments
2 Railway approved IP55 AC or DC motor with start and operating
capabilities between -40°C and +50 ºC
6 Direct drive concept for lean dimensions, low weight, short
service time and high reliability
3 Integrated vibration dampers for minimum transfer of vibrations
to and from the compressor
7 High efficiency, totally enclosed fan-cooled (TEFC), IP 55,
class F electric railway motor for continuous trouble-free
operation with greased for life bearings
4 Top quality oil-free scroll elements with patented superflow
for high performance and extended lifetime even in the worst
ambient conditions
8 The Full Feature version includes an integrated filter and
membrane dryer which removes condensate water and vapor
from the compressed air to protect your piping network and
brake system from freezing, corrosion and staining
Features and Benefits
Space-Saving Design
Minimized space requirements with single
side access for maintenance and installation
�Optional air dryer, filters and control cubicle
can all be integrated in a very compact
compressor package
�
Enduring Performance
The compressor is designed, built and tested
to meet the toughest conditions in railway
applications (extreme climatic conditions,
high humidity and vibrations)
�Built in accordance with relevant international
standards for railway applications
�Proven technology used in many applications
worldwide
�
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Oil-Free Compressor
Environmentally friendly oil-free scroll
�Less maintenance
�
Reliability & Durability
Minimum amount of moving parts
Corrosive resistant materials
�Long service interval
�Direct drive concept
�
�
Easy Installation
Plug and play system
�Easy to access main connections
�
Low Noise System without Pulsations
Very low noise level without any need of a noise canopy
No pulsations from reciprocating masses, neither into your piping
system nor to the car body: only a smooth constant air flow
sound from this continuous-flow unit
�
�
Full Feature Version and Still Low Weight
A complete packaged unit including filter and membrane dryer to
achieve an outlet air quality up to 1.2.0 according to ISO 8573-1
�Full feature oil-free unit and still a low total weight
�
Power and Control Quick Connectors
For fail-proof quick connection of power and control lines
�
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Manifold
For easy installation of all required safety and
measuring devices on a single manifold
Full-Feature version
A completely packaged unit including an
aftercooler, filter and membrane dryer to
achieve an outlet air quality up to 1.2.0
according ISO 8573-1
Control cubicle
To be able to control the unit as stand-alone
unit without expensive system integration
Different drives
Alternative drives like pulley or DC available
on request
Control voltage connector
To easily connect the control voltage lines
Motor voltage connector
To easily connect the power voltage lines
Different approvals
CE, ASME, SQL
Control pressure switch
To regulate the compressor according to
air demand by measuring the pressure in
the system
dP-switch inlet filter
For remote signaling in case the inlet filter
is clogged
Customized frame
To easily integrate the complete package into
the available space envelop in, under or on top
of the railway vehicle
Technical Specifications
Compressor
type
Capacity
Shaft power
Maximum pressure
Sound pressure
level
l/s
l/min
cfm
kW
hp
bar(e)
psig
dB(A)
50 Hz version
SFR 2-50
SFR 4-50
SFR 5-50
SFR 7-50
SFR 12-50
3.4
5.5
7.9
10.5
25.0
205
330
475
630
1500
7.2
11.7
16.7
22.2
53.0
2.2
3.7
5.5
6.5
12.0
3.0
5.0
7.5
8.8
16.3
10
10
10
10
10
145
145
145
145
145
57
58
62
66
69
60 Hz version
SFR 2-60
SFR 4-60
SFR 7-60
3.4
5.5
13.6
205
330
815
7.2
11.7
28.8
2.2
3.7
7.5
3.0
5.0
10.0
10
10
10
145
145
145
57
58
67
Inverter version
SFR 7i
SFR 10i
SFR 11i
SFR 14i
14.2
20.8
23.3
28.3
850
1250
1400
1700
30.0
44.1
49.4
60.0
8.0
10.0
11.0
14.0
10.9
13.5
15.0
19.0
10
10
10
10
145
145
145
145
66
69
70
71
Unit performance measured at a standard unit (before dryer) according to ISO1217 Ed. 03, Annex C-1996
Reference conditions:
Absolute inlet pressure 1 bar (14.5 psig)
Intake air temperature 20°C (68°F)
Mean noise level measured according to ISO 2151/Pneurop/Cagi PN8NTC2 at 4.6 meter free field
2935 0979 41 – Printed in Belgium – Subject to alteration without prior notice. Never use compressed air as breathing air without prior purification in accordance with local legislation and standards.
Options
www.atlascopco.com
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