SIEMENS
FLENDER Standard Couplings
Coupling Preselection and Options
3/3
Siemens MD 10.1 · 2015
Selection of the coupling series
3
Typical coupling solutions for different example applications
The specified application factors are recommendations; regula-
tions, rules and practical experience take priority as assessment
criteria.
No application factor need be taken into account with FLUDEX
couplings. In the case of highly flexible couplings of the ELPEX,
ELPEX-S and ELPEX-B series, deviating application factors are
stated in the product descriptions.
Example applications
Application
factor FB
FLUDEX
ZAPEX
ARPEX
N-EUPEX
RUPEX
N-BIPEX
ELPEX-B
ELPEX-S
ELPEX
Electric motor without gear unit
Centrifugal pumps
1.0 ... 1.5
–
–
Piston pumps
1.5 ... 2.0
–
Vacuum pumps
1.5 ... 1.75
Fans with
T
N
less than 75 Nm
1.5 ... 1.75
Fans with
T
N
from 75 to 750 Nm
1.75 ... 2.0
Fans with
T
N
larger than 750 Nm
1.75 ... 2.0
–
Blowers
1.5 ... 2.0
Frequency converters / generators
1.25 ... 1.75
–
Reciprocating compressors
1.75 ... 2.5
–
Screw-type compressors
1.5 ... 1.75
Internal-combustion engine without gear unit
Generators
1.75 ... 2.5
–
–
Pumps
1.5 ... 1.75
–
Fans
1.75 ... 2.5
–
–
Hydraulic pumps, excavators, construction
machines
1.5 ... 1.75
–
Compressors / screw-type compressors
1.5 ... 1.75
Agricultural machinery
1.75 ... 2.5
Other
Turbine gear units
1.5 ... 1.75
–
–
–
–
–
–
Hydraulic motor - gear unit
1.25 ... 1.5
–
Electric motor with gear unit
Chemical industry
Extruders
1.5 ... 2.0
–
–
Pumps - centrifugal pumps
1.0 ... 1.5
–
–
Pumps - piston pumps
1.75 ... 2.5
Pumps - plunger pumps
1.5 ... 1.75
Reciprocating compressors
1.75 ... 2.5
Calenders
1.5 ... 1.75
–
Kneaders
1.75 ... 2.5
Cooling drums
1.25 ... 1.5
–
–
–
Mixers
1.25 ... 1.5
–
–
–
Stirrers
1.25 ... 1.5
–
–
Toasters
1.25 ... 1.5
–
–
–
Drying drums
1.25 ... 1.5
–
–
Centrifuges
1.25 ... 1.5
–
–
Crushers
1.5 ... 2.5
–
Power generation and conversion
Compressed air, reciprocating compressors
1.75 ... 2.5
–
Compressed air, screw-type compressors
1.25 ... 1.5
–
–
Air - Blowers
1.5 ... 1.75
Air - Cooling tower fans
1.5 ... 1.75
–
Air - Turbine blowers
1.5 ... 1.75
–
–
–
–
–
–
Generators, converters
1.25 ... 1.5
–
–
–
–
Welding generators
1.25 ... 1.5
–
–
–
–
–
Metal production, iron and steel works
Plate tilters
1.5 ... 2.0
–
–
–
–
Ingot pushers
1.75 ... 2.5
–
–
–
–
Slabbing mill
1.75 ... 2.5
–
–
–
–
Coiling machines
1.5 ... 2.0
–
–
–
–
Roller straightening machines
1.5 ... 2.0
–
–
–
Roller tables
1.75 ... 2.5
–
–
–
Shears
1.75 ... 2.0
–
–
–
–
Rollers
1.75 ... 2.0
–
–
–
Preferred solution
Possible, less common
–
Uncommon
© Siemens AG 2015