SIEMENS
FLENDER Standard Couplings
Torsionally rigid all-steel couplings — N-ARPEX ARN-6 series
6/11
Siemens MD 10.1 N · 04/2017
Other data
6
■
Technical specifications
Permitted radial misalignments and dynamic coupling stiffnesses of type BEB
The values for torsional stiffness apply to the entire coupling
(without the hubs and customer shafts) and refer to the rated
torque of the coupling
T
KN
. For the determination of the torsional
stiffness for a specific operating point outside the nominal range,
consultation is required.
For other shaft distances, the permitted radial misalignment of
types NEN, BEB, and MCECM can be determined by the follow-
ing formulas:
NEN:
K
r
= (S-S1)
tan (
K
W
)
BEB and MCECM:
K
r
= (LZ + S1)
tan (
K
W
)
Size
Shaft
distance
Type NEN
Type MCECM
DA
S
K
r
C
Tdyn
LG
J
m
K
r
C
Tdyn
LG
J
m
mm
mm
MNm/rad
mm
kgm²
kg
mm
MNm/rad
mm
kgm²
kg
203-6
140 mm
2.18
1.08
330
0.1099
21.1
–
–
–
–
–
180 mm
2.88
1.02
370
0.1128
21.8
–
–
–
–
–
200 mm
3.23
0.99
390
0.1142
22.2
2.18
1.08
430
0.1829
31.8
250 mm
4.10
0.93
440
0.1178
23.2
3.05
1.01
480
0.1865
32.8
5 "
1.95
1.10
317
0.1089
20.8
–
–
–
–
–
7 "
2.84
1.02
367.8
0.1126
21.8
1.83
1.12
407.8
0.1797
31.1
9 "
3.73
0.96
418.6
0.1163
22.8
2.72
1.03
458.6
0.1834
32.1
217-6
140 mm
2.17
1.41
350
0.1516
24.9
–
–
–
–
–
180 mm
2.87
1.34
390
0.1559
25.9
–
–
–
–
–
200 mm
3.22
1.31
410
0.1580
26.4
2.17
1.41
460
0.2655
39.1
250 mm
4.09
1.23
460
0.1634
27.6
3.05
1.32
510
0.2732
40.9
5 "
1.95
1.43
337
0.1502
24.6
–
–
–
–
–
7 "
2.83
1.34
387.8
0.1556
25.9
–
–
–
–
–
9 "
3.72
1.26
438.6
0.1611
27.1
2.17
1.41
488.6
0.2976
43.6
251-6
180 mm
2.78
2.04
400
0.3078
38.8
–
–
–
–
–
200 mm
3.13
2.00
420
0.3120
39.5
–
–
–
–
–
250 mm
4.00
1.91
470
0.3224
41.3
2.78
2.04
550
0.5583
62.7
7 "
2.74
2.04
397.8
0.3073
38.7
–
–
–
–
–
9 "
3.63
1.95
448.6
0.3179
40.5
2.55
2.06
528.6
0.5403
60.7
268-6
180 mm
2.76
2.45
440
0.4550
49.5
–
–
–
–
–
200 mm
3.11
2.40
460
0.4601
50.3
–
–
–
–
–
250 mm
3.98
2.29
510
0.4727
52.3
2.72
2.45
570
0.7773
76.0
7 "
2.72
2.45
437.8
0.4544
49.4
–
–
–
–
–
9 "
3.61
2.34
488.6
0.4673
51.4
–
–
–
–
–
291-6
180 mm
2.74
3.58
460
0.6805
61.9
–
–
–
–
–
200 mm
3.09
3.52
480
0.6877
62.8
–
–
–
–
–
250 mm
3.97
3.35
530
0.7057
65.0
2.73
3.59
590
1.1127
92.4
7 "
2.71
3.59
457.8
0.6797
61.8
–
–
–
–
–
9 "
3.59
3.42
508.6
0.6980
64.0
–
–
–
–
–
318-6
200 mm
3.09
4.75
500
1.0788
83.1
–
–
–
–
–
250 mm
3.96
4.55
550
1.1064
86.1
–
–
–
–
–
300 mm
4.83
4.37
600
1.1340
89.1
3.07
4.75
680
1.9087
131.7
9 "
3.58
4.64
528.6
1.0946
84.8
–
–
–
–
–
343-6
200 mm
3.07
5.53
520
1.5633
104.1
–
–
–
–
–
250 mm
3.94
5.37
570
1.6095
108.1
–
–
–
–
–
300 mm
4.82
5.21
620
1.6557
112.1
3.05
5.53
710
2.7346
161.6
9 "
3.57
5.43
548.6
1.5898
106.4
–
–
–
–
–
Size
Type BEB
Size
Type BEB
DA
K
r
C
Tdyn
DA
K
r
C
Tdyn
mm
mm
MNm/rad
mm
mm
MNm/rad
86-6
0.91
0.06
203-6
2.18
1.08
103-6
0.90
0.09
217-6
2.17
1.41
122-6
1.59
0.19
251-6
2.78
2.04
133-6
1.58
0.26
268-6
2.76
2.45
159-6
1.54
0.43
291-6
2.74
3.58
174-6
2.22
0.52
318-6
3.09
4.75
184-6
2.19
0.80
343-6
3.94
5.37
© Siemens AG 2017