SIEMENS
FLENDER Standard Couplings
Highly Flexible Couplings — ELPEX Series
12/5
Siemens MD 10.1 · 2015
General information
12
■
Technical data
Power ratings
The damping coefficient is
Ψ
= 1.1
Torsional stiffness
The dynamic torsional stiffness is load-dependent and increases
in proportion to capacity utilization. The values specified in the
selection table apply to a capacity utilization of 100 %. The fol-
lowing table shows the correction factors for different rated
loads.
C
Tdyn
=
C
Tdyn 100 %
⋅
FKC
Torsional stiffness also depends on the ambient temperature
and the frequency and amplitude of the torsional vibration exci-
tation. More precise torsional stiffness and damping parameters
on request.
With elastic couplings the manufacturing process of the rubber
elements and their aging primarily influence the rigidity value
C
Tdyn
. For this reason calculation must be made with a tolerance
for the dynamic rigidity of
±
20 %. The specified damping coeffi-
cient
Ψ
is a minimum value with the result that the damping per-
formance of the coupling corresponds at least to the specified
value.
Permitted shaft misalignment
The permitted shaft misalignment depends on the operating
speed. As the speed increases, lower shaft misalignment values
are permitted. The following table shows the correction factors
for different speeds.
The maximum speed for the respective coupling size must be
noted!
Δ
K
perm
=
Δ
K
1500
⋅
FKV
Size
Rated
torque
Maximum
torque
Overload
torque
Fatigue
torque
Dynamic
torsional
stiffness for
100 %
capacity
utilization
Stiffness
Permitted shaft misalignment
at speed
n
= 1500 rpm
Axial
Radial
Axial
Radial
Angle
T
KN
T
Kmax
T
KOL
T
KW
C
Tdyn
C
a
C
r
Δ
K
a
Δ
K
r
Δ
K
w
Nm
Nm
Nm
Nm
kNm/rad
N/mm
N/mm
mm
mm
Degree
270
1600
4800
6400
640
22.0
660
770
2.2
2.2
0.2
320
2800
8400
11200
1120
38.0
780
910
2.6
2.6
0.2
375
4500
13500
18000
1800
63.0
970
1130
3
3
0.2
430
7100
21300
28400
2840
97.0
1160
1350
3.4
3.4
0.2
500
11200
33600
44800
4480
155
1410
1630
3.8
3.8
0.2
590
18000
54000
72000
7200
240
1710
1990
4.2
4.2
0.2
690
28000
84000
112000
11200
365
2060
2390
4.6
4.6
0.2
840
45000
135000
180000
18000
685
2570
2990
5
5
0.2
970
90000
270000
360000
36000
1100
3020
3510
5.5
5.5
0.2
Capacity utilization
T
N
/
T
KN
20 %
50 %
60 %
70 %
80 %
100 %
200 %
Correction factor FKC
0.3
0.56
0.65
0.74
0.82
1
1.9
Speed in rpm
500
1000
1500
3000
Correction factor FKV
1.6
1.25
1.0
0.7
© Siemens AG 2015