Product Catalogue
Couplings
GKN Stromag highly flexible
couplings for universal shafts
Solutions for new technologies
Solutions for new technologies >
The GKN Stromag IGE...FG concept >
Highly flexible rubber coupling with a progressive characteristic
for connecting a universal shaft directly to a diesel engine. For the
transmission of high torques with its compact design and light
weight. The coupling is flange-mounted to the B-side of the coupling.
The universal shaft is flange-mounted to the B-side of the coupling.
Deflection angle of the universal shaft of up to 5°. The radial and axial
forces generated by the cardan shaft are absorbed by an internal friction
bearing and transmitted to the engine mount.
Torque range between 4,000 Nm to 25,000 Nm.
GKN Periflex® CS couplings >
Highly flexible rubber couplings with linear spring characteristics for
connecting a universal shaft directly to a diesel engine. The ring element
can be bolted directly to the flywheel. The universal shaft is flangemounted to the B-side of the coupling. Deflection angle of the universal
shaft of up to 5°. The radial and axial forces generated by the cardan
shaft are absorbed by an internal friction bearing and transmitted to the
engine mount.
Torque range between 560 Nm to 14,800 Nm.
GKN Stromag AFL / PVN flange bearing >
Flange bearing as a bell that is mounted to the diesel engine. Inside
the bell, an axial mountable GKN Stromag PVN disc coupling is used to
transfer the torque from the flywheel to the cardan shaft. The flexible
element has a linear characteristic. The integrated bell bearing transfers
the reaction forces from the cardan shaft to the engine housing.
Deflection angle of the universal shaft of up to 10°.
Torque range between 500 Nm to 20,000 Nm.
Catalogue No. D 810, 08.2013
All issues containing details on GKN Stromag Periflex® CS prior to this publication may no longer apply.
We reserve the right to modify the dimensions and constructions.
GKN Stromag products comply with the Quality Standard to DIN ISO 9001.
cONTENT
GKN Stromag Periflex® cardan shaft coupling
The GKN Stromag cardan shaft intermediate coupling concept
4
Instructions for the design engineer
4
Instructions on choosing the coupling size
4
Storage of flexible rubber elements
5
The GKN Stromag Periflex® cardan shaft
intermediate coupling series
– GKN Stromag PeriflexR CS performance table
5
– GKN Stromag Periflex® CS dimensions table
GKN Stromag AFL / Periflex® VN concept series
– GKN Stromag AFL / Periflex® VN performance table
– SAE connections for engines and generators
15
– GKN Stromag AFL / Periflex® VN dimensions table
The GKN Stromag IGE...FG concept series
– GKN Stromag IGE...FG performance table
19
– GKN Stromag IGE...FG-shaft connection
Characteristic values for cardan shaft couplings
21
Questionnaire on the design of flexible couplings
23
3
Product catalogue
The cardan shaft intermediate coupling concept >
The GKN Stromag product range provides a wide range of cardan shaft intermediate couplings. The couplings are
designed for use in piston machines for direct connection to a cardan shaft.
The A-side of the coupling can be bolted directly to an engine’s flywheel. The universal shaft is flange-mounted to the
B-side of the coupling.
The GKN Stromag cardan shaft intermediate coupling is comprised of the combination of an element made from flexible
rubber material with a bearing for the secure absorption of the reaction forces applied by a connected cardan shaft.
Three different series of the cardan shaft intermediate couplings have been developed in order to satisfy the differing
requirements in relation to the system torque, torsion spring stiffness and reaction force.
The highly flexible GKN Stromag PeriflexR CS series designs are preferred for standard applications.
The IGE series from the established highly flexible GKN Stromag GE coupling product family is used for applications with
high impact loads.
The GKN Stromag AG flange bearing (AFL) together with a disc coupling as a cardan shaft intermediate coupling is
recommended for an angle of deflection greater than 5°.
Instructions for the design engineer >
The couplings can be used in a temperature range of between -50°C and +80°C. A specially developed synthetic rubber
can be used for the AFL’s disc tire so that this can be used up to a temperature of 120°C.
The elastic elements may heat up as a result of their damping activities and reach higher temperatures than the ambient
temperature. If the coupling is housed in a protective hood or cover, this must be taken into account, or adequate
ventilation and heat discharge must be ensured.
The GKN Stromag cardan shaft intermediate couplings are available with EN 10204 approval in accordance with the
classification society requirements.
The GKN Stromag cardan shaft intermediate couplings are available with an in-built fail-safe device. If there is a rupture
in the flexible element, this forms a torsionally rigid connection subject to backlash between the drive and output sides
due to intermeshing of the claws. Emergency operation is possible for a limited period of time with restricted torque.
Instructions on choosing the coupling size >
Static and dynamic characteristic values are available for the GKN Stromag cardan shaft intermediate couplings.
These values can help in the choice of a coupling size which is suitable for the specific application. The key
factors for this are the loads arising from the power transmitted and torsional vibrations. Stationary operating
modes must be based on TKN, TKW and PKV, while TKmax values are to be used for non-stationary operating modes.
GKN Stromag’s specialist departments can provide support with design, particularly in calculating the torsional
vibrations. We therefore ask you to copy, complete and send us the questionnaire at the end of this catalog.
As a rule, flexible couplings represent the predetermined mechanical breaking point of a drive train. Overloading a drive
train therefore generally leads to failure of the flexible coupling element.
This characteristic is intentional and protects the entire system from unexpected damage. Any consequential damage
that could arise from the failure of the coupling must be taken into consideration in advance by the system designer and
monitored or prevented through appropriate measures.
4
Storage of flexible rubber elements >
When stored appropriately, flexible rubber elements retain their properties over several years without any alterations.
It is essential that the stored parts are protected against oxygen, ozone, light, heat, moisture and solvents.
The storage temperature should no fall below +10°C and not exceed +25°C. All UV light sources are harmful and must
be avoided. Equipment that generates ozone, e.g. light sources and electric motors, must be kept away from the storage
location.
The relative air humidity should not exceed 65%.
Solvents, fuels, lubricants, chemicals, acids, disinfectants may not be kept in the same storage area.
Further details can be found in the DIN 7716 sheet.
Baureihe GKN Stromag Periflex® cardan shaft intermediate coupling series >
Das Periflex® CS concept
The Periflex® CS couplings are highly flexible
rubber couplings with a linear spring
characteristic for connecting a cardan shaft
directly to a diesel engine drive.
A side
The ring element can be bolted directly to an
engine’s flywheel. The universal shaft is
flange-mounted to the B-side of the coupling.
An deflection angle of the cardan shaft of up
to 5° is generally permitted, larger angles are
available on request.
The series covers the torque range from 560
to 14800 Nm. The connecting dimensions on
the engine side primarily conform to SAE
standard J620 or DIN 6281.
The cardan shaft side is available in a range of
metric sizes, including for Spicer, Mechanics
or cross-toothed connections.
The Periflex® CS coupling is comprised of the
combination of a ring element made from
flexible rubber material with a bearing for the
secure absorption of the reaction forces
applied by a connected cardan shaft. The ring
element is exclusively torsionally flexible. The
bearing consists of an axial and radial friction
bearing
made
from
wear-free
and
maintenance-free composite material.
The metal parts of the GKN Periflex® CS
coupling are made from high-quality cast as
standard. The ring element is manufactured
from natural rubber (NR) in various rubber
qualities and torsion spring stiffnesses.
These allow precise adjustment to drives that
are susceptible to torsional vibrations.
B side
DD_880026 – 000
5
Product catalogue
GKN Stromag PeriflexR CS performance table >
Nominal torque
Coupling size
Element
Maximum
Maximum
torque
torque
Adm.
alternating
torque
TKN
TKmax1
Tkmax2
TKW
Nm
Nm (1)
Nm (2)
Nm
Relative
Adm.
Adm.
Torsion spring
Speed
stiffness
nmax.
(min-1) (6)
CT dyn
ψ
PKV 60
kNm/rad (3) (4)
(3) (4)
W (5)
damping
damping power
CS 13
131
132
133
560
560
800
840
840
1,200
1680
1680
2,400
140
140
200
4,400
4,400
4,400
2.4
3.3
6.7
0.8
1.0
1.1
130
CS 21
211
212
213
700
700
1,000
1,050
1,050
1,500
2,100
2,100
3,000
175
175
250
4,200
4,200
4,200
3.6
3.9
5.7
0.8
1.0
1.1
200
CS 22
221
222
223
900
900
1,300
1400
1400
1,800
2,800
2,800
3,600
225
225
325
4,200
4,200
4,200
4.7
6.2
9.1
0.8
1.0
1.1
220
CS 31
311
312
313
1400
1400
2,000
2,100
2,100
3,000
4,200
4,200
6,000
350
350
500
3,800
3,800
3,800
6.9
9.5
13.5
0.8
1.0
1.1
260
CS 32
321
322
323
2,000
2,000
2,400
3,000
3,000
3,600
6,000
6,000
7,200
500
500
600
3,800
3,800
3,800
9.4
14.5
20.0
0.8
1.0
1.1
340
CS 41
411
412
413
2,800
2,800
4,000
4,200
4,200
6,000
8,400
8,400
12,000
700
700
1,000
2,800
2,800
2,800
16.2
21.6
34.5
0.8
1.0
1.1
360
CS 42
421
422
423
3,900
3,900
5,200
5,800
5,800
7,800
11,600
11,600
15,600
975
975
1,300
2,800
2,800
2,800
23.3
31.1
40.0
0.8
1.0
1.1
440
CS 43
431
432
433
4,900
4,900
6,700
7,300
7,300
10,000
14,600
14,600
20,000
1,225
1,225
1,675
2,800
2,800
2,800
30.5
39.0
57.5
0.8
1.0
1.1
510
CS 51
511
512
513
7,800
7,800
11,400
11,700
11,700
17,100
23,400
23,400
34,200
1,950
1,950
2,850
2300
2300
2300
51.8
69.1
96.0
0.8
1.0
1.1
580
CS 52
521
522
523
9,800
9,800
14,800
14,700
14,700
22,200
29,400
29,400
44,400
2,450
2,450
3,700
2,300
2,300
2,300
70.3
93.7
127.0
0.8
1.0
1.1
630
1) for periodic, short-term vibrations during start-stop, switching, etc.
2) for rare peak loads, e.g. generator short-circuit
3) For: TW = 0.2 • TKN; T = 0.8 • TKN; f = 10 Hz; ϑ = 30 °C
4) Material-related tolerances as high as ±15% are possible.
5) The PKV 60 value describes the damping performance that can be absorbed over 60 minutes.
Permanently absorbable damping performance PKV ∞ = 0.5 • PKV 60
6
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880023 - 000
Metric, external cardan shaft connection
Size
CS 13
SAE
connection
8“
CS 21
10“
CS 22
10“
11½“
10“
11½“
75
90
100
75
90
100
90
100
120
90
100
120
90
100
120
90
100
120
a1
263.5
263.5
263.5
314.4
314.4
314.4
314.4
314.4
314.4
352.4
352.4
352.4
314.4
314.4
314.4
352.4
352.4
352.4
b1
244.5
244.5
244.5
295.3
295.3
295.3
295.3
295.3
295.3
333.4
333.4
333.4
295.3
295.3
295.3
333.4
333.4
333.4
c1
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
200
k1
6x11
6x11
6x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
8x11
b2
62
74.5
84
62
74.5
84
74.5
84
101.5
74.5
84
101.5
74.5
84
101.5
74.5
84
101.5
c2
42
47
57
42
47
57
47
57
75
47
57
75
47
57
75
47
57
75
6xM6
4xM8
6xM8
6xM6
4xM8
6xM8
4xM8
6xM8
8xM8
4xM8
6xM8
8xM8
4xM8
6xM8
8xM8
4xM8
6xM8
8xM8
e
228
228
228
228
228
228
250
250
250
250
250
250
254
254
254
254
254
254
l1
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
61.5
I2
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
10.5
l3
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
l4
2
2.3
2.3
2
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
l5
11.5
11.5
11.5
13.5
13.5
13.5
11.5
11.5
11.5
13.5
13.5
13.5
11.5
11.5
11.5
13.5
13.5
13.5
l6
19
19
19
19
19
19
19
19
19
19
19
19
19
19
18
19
19
19
l7
72.5
72.8
72.8
72.5
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
72.8
0.056
0.056
0.056
0.102
0.102
0.102
0.114
0.114
0.114
0.165
0.165
0.165
0.116
0.116
0.116
0.167
0.167
0.167
0.039
0.039
0.039
0.039
0.039
0.039
0.044
0.044
0.044
0.044
0.044
0.044
0.046
0.046
0.046
0.046
0.046
0.046
12.4
12.4
12.3
14.6
14.6
14.5
15.5
15.4
15.2
17.3
17.2
17.0
15.7
15.6
15.4
17.5
17.4
17.2
Diameter
mm
Cardan flange
k2*
Lengths
mm
Mass
moment
of inertia
kgm2
Mass kg
JAside
JBside
7
8xM10
8xM10
8xM10
8xM10
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880023 - 000
Metric, external cardan shaft connection
Size
CS 31
SAE
connection
Mass
moment
of inertia
kgm2
Lengths
mm
Diameter
mm
Cardan flange
Mass kg
CS 32
11½“
14“
11½“
14“
100
120
150
100
120
150
120
150
180
120
150
180
a1
352.4
352.4
352.4
466.7
466.7
466.7
352.4
352.4
352.4
466.7
466.7
466.7
b1
333.4
333.4
333.4
438.2
438.2
438.2
333.4
333.4
333.4
438.2
438.2
438.2
c1
274
274
274
274
274
274
274
274
274
274
274
274
k1
8x11
8x11
8x11
8x13.5
8x13.5
8x13.5
8x11
8x11
8x11
8x13.5
8x13.5
8x13.5
b2
84
101.5
130
84
101.5
130
101.5
130
155.5
101.5
130
155.5
c2
57
75
90
57
75
90
75
90
110
75
90
110
k2
6xM8
8xM8
8xM10
6xM8
8xM8
8xM10
8xM8
8xM10
8xM14
8xM8
8xM10
8xM14
8xM10
8xM12
8xM10
8xM12
8xM10
8xM12
8xM16
8xM10
8xM12
8xM16
e
314
314
314
314
314
314
317
317
317
317
317
317
l1
69.5
69.5
69.5
69.5
69.5
69.5
69.5
69.5
69.5
69.5
69.5
69.5
I2
17
17
17
17
17
17
17
17
17
17
17
17
l3
68
68
68
68
68
68
68
68
68
68
68
68
l4
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.5
l5
12.5
12.5
12.5
14.5
14.5
14.5
12.5
12.5
12.5
14.5
14.5
14.5
l6
23
23.5
23.5
23.5
23.5
23.5
23.5
23.5
23.5
23.5
23.5
23.5
l7
87.3
87.3
87.3
87.3
87.3
87.3
87.3
87.3
87.3
87.3
87.3
87.3
0.187
0.187
0.187
0.511
0.511
0.511
0.121
0.191
0.191
0.515
0.515
0.515
0.166
0.165
0.165
0.166
0.165
0.165
0.169
0.169
0.168
0.169
0.169
0.168
25
24.8
24.5
32.5
32.3
32.3
25.5
25.2
25.2
33.0
32.7
32.2
JAside
J Bside
8
GKN Stromag Periflex CS dimensions table >
A side
B side
DD 880023 - 000
Metric, external cardan shaft connection
Size
SAE
connection
Mass
moment
of inertia
kgm2
Lengths
mm
Diameter
mm
Cardan flange
Mass kg
a1
b1
c1
k1
b2
c2
k2
150
CS 41
CS 42
14“
14“
180
225
466.7
438.2
370
16x13.5
155.5
110
8xM14
10xM16
417
466.7
438.2
370
16x13.5
196
140
8xM16
e
466.7
438.2
370
16x13.5
130
90
8xM10
8xM12
417
l1
I2
l3
l4
l5
l6
l7
76.5
19.0
74.5
2.3
14.5
27.0
95.8
JAside
J Bside
150
180
CS 43
14“
225
16“
18“
180
225
250
180
225
250
180
225
250
466.7
438.2
370
16x13.5
196
140
8xM16
466.7
438.2
370
16x13.5
218
140
8xM18
517.5
489
370
8x13.5
196
140
8xM16
517.5
489
370
8x13.5
218
140
8xM18
571.5
542.9
370
6x17.5
218
140
8xM18
420
420
420
571.5
542.9
370
8x17.5
155.5
110
8xM14
10xM16
420
571.5
542.9
370
6x17.5
196
140
8xM16
420
517.5
489
370
8x13.5
155.5
110
8xM14
10Xm16
420
420
420
466.7
438.2
370
16x13.5
155.5
110
8xM14
10xM16
417
466.7
438.2
370
16x13.5
196
140
8xM16
417
466.7
438.2
370
16x13.5
130
90
8xM10
8xM12
417
417
466.7
438.2
370
16x13.5
155.5
110
8xM14
10xM16
420
76.5
19.0
74.5
2.3
14.5
27
95.8
76.5
19.0
74.5
4.5
14.5
27
98
76.5
19.0
74.5
2.3
14.5
27
95.8
76.5
19.0
74.5
2.3
14.5
27
95.8
76.5
19.0
74.5
4.5
14.5
27
98
76.5
19.0
74.5
2.3
14.5
27
95.8
76.5
19.0
74.5
4.5
14.5
27
98
76.5
19.0
74.5
5.5
14.5
27
95.8
76.5
19.0
74.5
2.3
16.5
27
95.8
76.5
19.0
74.5
4.5
16.5
27
98
76.5
19.0
74.5
5.5
16.5
27
99
76.5
19.0
74.5
2.3
16.5
27
95.8
76.5
19.0
74.5
4.5
16.5
27
98
76.5
19.0
74.5
5.5
16.5
27
99
0.646
0.627
0.646
0.626
0.646
0.623
0.657
0.638
0.657
0.637
0.657
0.633
0.666
0.646
0.666
0.643
0.666
0.643
0.936
0.646
0.936
0.643
0.936
0.643
1.346
0.646
1.346
0.643
1.346
0.643
50.5
49.9
48.9
51,5
50.5
49.5
50.9
49.9
49.9
55.3
54.3
54.3
60.9
59.9
59.9
9
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880023 - 000
Metric, external cardan shaft connection
Size
SAE
connection
Mass
moment
of inertia
kgm2
Lengths
mm
Diameter
mm
Cardan flange
Mass kg
CS 51
CS 52
18“
21“
225
250
285
250
285
a1
b1
c1
k1
b2
c2
k2
e
571.5
542.9
440
12x17.5
196
140
8xM16
520
571.5
542.9
440
12x17.5
218
140
8xM18
520
571.5
542.9
440
12x17.5
245
175
8xM20
520
673.1
641.4
440
12x17.5
218
140
8xM18
525
673.1
641.4
440
12x17.5
245
175
8xM20
525
l1
I2
l3
l4
l5
l6
l7
93
21
90
4.5
16.0
30.5
115.5
93
21
90
5.5
16.0
30.5
116.5
93
21
90
5.5
16.0
30.5
116.5
93
21
90
5.5
16.0
30.5
116.5
93
21
90
5.5
16.0
30.5
116.5
JAside
JBside
1.745
1.514
1.745
1.514
1.745
1.505
3.380
1.569
3.380
1.559
85.3
85.4
83.6
103.2
101.4
10
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880024 - 000
Metric, internal cardan shaft connection
Size
CS 13
SAE
connection
8“
Mass
moment
of inertia
kgm2
Lengths
mm
Diameter
mm
Cardan flange
Mass kg
CS 21
10“
CS 22
10“
11½“
10“
11½“
75
90
100
75
90
100
90
100
120
90
100
120
90
100
120
90
100
120
263.5
244.5
200
6x11
62
42
6x6,1
263.5
244.5
200
6x11
74.5
47
4x8,1
263.5
244.5
200
6x11
84
57
6x8,1
314.4
295.3
200
8x11
62
42
6x6,1
314.4
295.3
200
8x11
74.5
47
4x8,1
314.4
295.3
200
8x11
84
57
6x8.1
314.4
295.3
200
8x11
74.5
47
4x8,1
314.4
295.3
200
8x11
84
57
6x8.1
352.4
333.4
200
8x11
74.5
47
4x8,1
352.4
333.4
200
8x11
84
57
6x8.1
314.4
295.3
200
8x11
84
57
6x8.1
352.4
333.4
200
8x11
84
57
6x8.1
228
228
228
228
228
250
250
250
250
254
254
314.4
295.3
200
8x11
101.5
75
8x8.1
8x10.1
254
352.4
333.4
200
8x11
74.5
47
4x8,1
228
352.4
333.4
200
8x11
101.5
75
8x8.1
8x10.1
250
314.4
295.3
200
8x11
74.5
47
4x8,1
e
314.4
295.3
200
8x11
101.5
75
8x8.1
8x10.1
250
254
254
352.4
333.4
200
8x11
101.5
75
8x8.1
8x10.1
254
l1
I2
l3
l4
l5
l6
l7
I8
61.5
10.5
11.5
2.0
11.5
17.3
72.0
4.7
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2
13.5
17.3
72.0
4.7
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
15.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
11.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
61.5
10.5
11.5
2.3
13.5
16.0
72.0
6.0
0.056
0.039
0.056
0.039
0.056
0.039
0.102
0.039
0.102
0.039
0.102
0.039
0.114
0.044
0.114
0.044
0.114
0.044
0.165
0.044
0.165
0.044
0.165
0.044
0.116
0.046
0.116
0.046
0.116
0.045
0.167
0.046
0.167
0.046
0.167
0.046
12.5
12.3
12.2
14.7
14.5
14.4
15.5
15.3
15.0
17.3
17.1
16.8
15.7
15.5
15.2
17.5
17.3
17.0
a1
b1
c1
k1
b2
c2
k2 *
JAside
JBside
11
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880024 - 000
Metric, internal cardan shaft connection
Size
CS 31
SAE
connection
CS 32
11½“
14“
11½“
14“
Cardan flange
100
120
150
100
120
150
120
150
180
120
150
180
a1
352.4
333.4
274
8x11
84
57
6x8.1
352.4
333.4
274
8x11
130
90
8x10.1
8x12.1
314
466.7
438.2
274
8x13.5
84
57
6x8.1
314
352.4
333.4
274
8x11
101.5
75
8x8.1
8x10.1
314
314
466.7
438.2
274
8x13.5
101.5
75
8x8.1
8x10.1
314
466.7
438.2
274
8x13.5
130
90
8x10.1
8x12.1
314
352.4
333.4
274
8x11
101.5
75
8x8.1
8x10.1
317
352.4
333.4
274
8x11
130
90
8x10.1
8x12.1
317
352.4
333.4
274
8x11
155.5
110
8x14.1
10x16.1
317
466.7
438.2
274
8x13.5
101.5
75
8x8.1
8x10.1
317
466.7
438.2
274
8x13.5
130
90
8x10.1
8x12.1
317
466.7
438.2
274
8x13.5
155.5
110
8x14.1
10x16.1
317
69.5
17
9.5
2.3
12.5
20.5
86.5
6.0
69.5
17
9.5
2.3
12.5
20.5
86.5
6.0
69.5
17
9.5
2.3
12.5
19.5
86.5
7,0
69.5
17
9.5
2.3
14.5
20.5
86.5
6.0
69.5
17
9.5
2.3
14.5
20.5
86.5
6.0
69.5
17
9.5
2.3
14.5
19.5
86.5
7,0
69.5
17
9.5
2.3
12.5
20.5
86.5
6.0
69.5
17
9.5
2.3
12.5
19.5
86.5
7,0
69.5
17
9.5
2.3
12.5
17.5
86.5
9.0
69.5
17
9.5
2.3
14.5
20.5
86.5
6.0
69.5
17
9.5
2.3
14.5
19.5
86.5
7,0
69.5
17
9.5
2.3
14.5
17.5
86.5
9.0
0.187
0.167
0.187
0.167
0.187
0.164
0.511
0.167
0.511
0.167
0.511
0.164
0.191
0.171
0.191
0.168
0.191
0.162
0.515
0.171
0.515
0.168
0.515
0.162
25.1
24.7
24.1
32.7
32.2
31.6
25.4
24.8
23.6
32.9
32.3
31.1
b1
Diameter
mm
c1
k1
b2
c2
k2
e
l1
Lengths
mm
I2
l3
l4
l5
l6
Mass
moment
of inertia
kgm2
l7
Mass kg
JAside
JBside
12
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880024 - 000
Metric, internal cardan shaft connection
Size
SAE
connection
Diameter
mm
Lengths
mm
Mass
moment
of inertia
kgm2
CS 42
14“
14“
CS 43
14“
16“
18“
150
180
225
150
180
225
180
225
180
225
180
225
466.7
438.2
370
16x13.5
155.5
110
8x14.1
10x16.1
417
466.7
438.2
370
16x13.5
196
140
8x16.1
466.7
438.2
370
16x13.5
155.5
110
8x14.1
10x16.1
420
420
571.5
542.9
370
6x17.5
155.5
110
8x14.1
10x16.1
420
571.5
542.9
370
6x17.5
196
140
8xM16
420
517.5
489
370
8x13.5
155.5
110
8x14.1
10x16.1
420
517.5
489
370
8x13.5
196
140
8x16.1
420
466.7
438.2
370
16x13.5
155.5
110
8x14.1
10x16.1
420
466.7
438.2
370
16x13.5
196
140
8x16.1
417
466.7
438.2
370
16x13.5
130
90
8x10.1
8x12.1
420
466.7
438.2
370
16x13.5
196
140
8x16.1
e
466.7
438.2
370
16x13.5
130
90
8x10.1
8x12.1
417
l1
I2
l3
l4
l5
l6
l7
l8
76.5
19.0
12.0
2.3
14.5
24.0
95.5
7,0
76.5
19.0
12.0
2.3
14.5
22.0
95.5
9.0
76.5
19.0
12.0
4.5
14.5
20.5
95.5
10.5
76.5
19.0
12.0
2.3
14.5
24.0
95.5
7.0
76.5
19.0
12.0
2.3
14.5
22.0
95.5
9.0
76.5
19.0
12.0
4.5
14.5
20.5
95.5
10.5
76.5
19.0
12.0
2.3
14.5
22.0
95.5
9.0
76.5
19.0
12.0
4.5
14.5
20.5
95.5
10.5
76.5
19.0
12.0
2.3
16.5
22.0
95.5
9.0
76.5
19.0
12.0
4.5
16.5
20.5
95.5
10.5
76.5
19.0
12.0
2.3
16.5
22.0
95.5
9.0
76.5
19.0
12.0
4.5
16.5
20.5
95.5
10.5
0.646
0.634
0.646
0.628
0.646
0.611
0.657
0.645
0.657
0.638
0.657
0.622
0.666
0.648
0.666
0.631
0.936
0.648
0.936
0.632
1.346
0.648
1.346
0.645
50.9
49.7
47.6
51,5
50.3
48.2,
50.7
48.6
55.1
53.0
60.7
60.4
Cardan flange
Mass kg
CS 41
a1
b1
c1
k1
b2
c2
k2
JAside
JBside
13
420
GKN Stromag Periflex® CS dimensions table >
A side
B side
DD 880024 - 000
Metric, internal cardan shaft connection
Size
SAE
connection
Mass
moment
of inertia
kgm2
Lengths
mm
Diameter
mm
Cardan flange
Mass kg
CS 51
CS 52
18“
21“
225
250
285
250
285
a1
b1
c1
k1
b2
c2
k2
e
571.5
542.9
440
12x17.5
196
140
8x16.1
520
571.5
542.9
440
12x17.5
218
140
8x18.1
520
571.5
542.9
440
12x17.5
245
175
8x20.1
520
673.1
641.4
440
12x17.5
218
140
8x18.1
525
673.1
641.4
440
12x17.5
245
175
8x20.1
525
l1
I2
l3
l4
l5
l6
l7
I8
93
21
14.5
4.5
16.0
25.0
114
10.5
93
21
14.5
5.2
16.0
23.5
114
12.0
93
21
14.5
5.5
16.0
22.8
114
12.7
93
21
14.5
5.5
16.0
23.5
114
12.0
93
21
14.5
5.5
16.0
22.8
114
12.7
1.745
1.517
1.745
1.501
1.745
1.470
3.380
1.556
3.380
1.524
84.9
83.8
81.1
101.6
98.9
JAside
J Bside
14
GKN Stromag AFL / PVN concept series >
DD_881003 - 000
The GKN Stromag AFL / PVN concept
The flange bearing is a bell that is mounted to the diesel engine. An axially mountable, plug-in, highly flexible GKN
Stromag PeriflexR disc tire arranged inside the bell transmits the torque from the flywheel to the cardan shaft.
The disc tire has a linear spring characteristic and ensures the balanced torsional vibration behavior of the system,
while the integrated bearing transmits the cardan shaft’s reaction forces to the engine housing via the bell. This means
that the crank shaft bearings are not exposed to the reaction forces. As a rule, the AFL can be use up to a deflection
angle of 10°, larger deflection angles are possible on request, depending on the operating conditions.
The torque transferred by the series is determined by the GKN Stromag PeriflexRdisc tire used. The torque range extends
from 1,000 Nm to 20,000 Nm.
The bell’s connecting dimensions to the engine housing are based on SAE standard J617. The connecting dimensions
to the flywheel on the engine side primarily conform to SAE standard J620 or DIN 6281.
The cardan shaft side is available in a range of metric sizes, including for Spicer, Mechanics or cross-toothed connections
on request.
The flange bearing’s bell and the connection ring are manufactured from high-quality cast aluminum, while the other
metal parts are steel.
The GKN Stromag Periflex® disc tire is manufactured from natural rubber (NR) or a synthetic rubber in various torsion
spring stiffnesses. These allow an adjustment to drives that are susceptible to torsional vibrations.
15
Product catalogue
GKN Stromag AFL / PVN performance table >
PVN 350
35,011
35,031
35,021
35,041
35,051
TKN
Nm
1,000
1,250
1,250
1,250
1,250
Tkmax (1)
Nm
3,000
3,000
3,000
3,000
3,000
Adm.
alternating
torque
TKW
Nm
500
625
625
625
625
PVN 358
35,811
35,831
35,821
35,841
35,851
1600
2,000
2,000
2,000
2,000
4,800
4,800
4,800
4,800
4,800
PVN 430
43,011
43,031
43,021
43,041
43,051
1600
2,000
2,000
2,000
2,000
PVN 433
43,311
43,331
43,321
43,341
43,351
Coupling size
Nominal
torque
Tyre
Maximum torque
Torsion spring
stiffness
Relative damping
Adm.
damping power
SAE
connection
CT dyn 2) 4)
Nm/rad
7,660
11,100
13,990
16,540
2,860
ψ
2) 4)
0.80
0.96
1.00
1.20
1.30
PKV 60 3) 5)
W
260
260
260
260
260
800
1,000
1,000
1,000
1,000
16,700
24,200
33,200
36,060
58,500
0.80
0.96
1.00
1.20
1.30
260
260
260
260
260
11½“
14“
4,800
4,800
4,800
4,800
4,800
800
1,000
1,000
1,000
1,000
7,800
11,300
13,900
16,840
29,380
0.80
0.96
1.00
1.20
1.30
494
494
494
494
494
14“
16"
18“
2,500
3,150
3,150
3,150
3,150
7,500
7,500
7,500
7,500
7,500
1,250
1,550
1,550
1,550
1,550
18,630
27,000
34,020
40,230
70,200
0.80
0.96
1.00
1.20
1.30
520
520
520
520
520
14“
16"
18“
PVN 436
43,611
43,631
43,621
43,641
43,651
4,000
5,000
5,000
5,000
5,000
12,000
12,000
12,000
12,000
12,000
2,000
2,500
2,500
2,500
2,500
25,400
34,600
46,600
53,640
93,600
0.80
0.96
1.00
1.20
1.30
572
572
572
572
572
14“
16"
18“
PVN 439
43,911
43,931
43,941
43,951
3200
4,000
4,000
4,000
10,000
10,000
10,000
10,000
1,600
2,000
2,000
2,000
36,230
53,500
76,000
13,650
0.80
0.96
1.20
1.30
390
390
390
390
14“
16"
18“
PVN 544
54,411
54,431
54,421
54,441
54,451
6300
8,000
8,000
8,000
8,000
19,000
19,000
19,000
19,000
19,000
3,150
4,000
4,000
4,000
4,000
62,790
91,000
114,700
135,600
226,400
0.80
0.96
1.00
1.20
1.30
622
622
622
622
622
18“
21"
PVN 549
54,911
54,931
54,921
54,941
54,951
8,000
9,000
9500
11,000
12,000
17,000
20,000
21,000
22,000
25,000
4,000
4,500
4,750
5,000
6,000
88,320
128,000
161,300
204,700
332,800
0.80
0.96
1.00
1.20
1.30
650
650
650
650
650
18“
21"
PVN 666
66,611
66,631
66,621
66,641
66,651
16,000
20,000
20,000
20,000
20,000
48,000
48,000
48,000
48,000
48,000
8,000
10,000
10,000
10,000
10,000
111,800
162,000
205,000
241,400
428,500
0.80
0.96
1.00
1.20
1.30
1,100
1,100
1,100
1,100
1,100
21"
24"
1) the values listed in the tables refer to the characteristic values of the disc tire.
2) For: TW = 0,2 • TKN; T = 0,8 • TKN; f = 10 Hz; ϑ = 30 °C
3) When coupling temperatures are higher than 30°C, this value must be reduced by the temperature factor.
Temperature factor SϑPKV
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
20
30
40
70 50
80 60
90
Ambient temperature [ºC]
4)Material-related tolerances as high as ±15% are possible.
5) The PKV 60 value describes the damping performance that can be absorbed over 60 minutes.
The damping power that can be absorbed permanently is PKV∞ = 0,5 • PKV 60.
16
11½“
14“
SAE connections for engines and generators >
Holes for bolts k
Flywheel
Engine housing
DD_8810103 - 000
Engine housing
Generatorconnection
Coupling connection
in acc. with SAE
Lengths
mm
b
f
c
e
k
u
t
d8
k2
d1
k1
d7
d12
e2
e3
11,½“
352.4
333.4
447.7
466.7
12x10.5
8x11.0
39.6
29
350/358
11,½“
352.4
333.4
511.2
530.2
12x11
8x11.0
39.6
29
350/358
14“
466.7
438.2
511.2
530.2
12x11
8x13.5
25.4
29
350/358/430/
433/436
11,½“
352.4
333.4
647.7
679.5
16x13.5
8x11.0
39.6
29
350/358
14“
466.7
438.2
647.7
679.5
16x13.5
8x13.5
25.4
29
350/358/430
433/436/439
16“
517.5
489.0
647.7
679.5
16x13.5
8x13.5
15.7
29
436
18“
571.5
542.9
647.7
679.5
16x13.5
6x17.5
15.7
29
430/433
18“
571.5
542.9
647.7
679.5
16x13.5
6x17.5
15.7
29
436/544/549
18“
571.5
542.9
787.4
850.9
16x13.5
6x17.5
0
32
430/433/436/
544/549
21“
673.1
641.4
787.4
850.9
16x13.5
12x17.5
0
14.5
1
0
Coupling size
Series: VN
a
Reference in acc. with
DIN 6281
2
Diameter
mm
00
17
544/549
GKN Stromag AFL / PVN dimensions table >
DD_881011 - 000
Housing
SAE J617
G
Flywheel
SAE J620
S
18"
00
21“
14“
0
18“
11,½“
1
14“
Torque
TKN
Nm
Clutch
Design length
L
mm
Flange connection
d
mm
PVN 544
8,000
PVN 549
12,000
PVN 666
20,000
PVN 433
3,150
PVN 439
4,000
PVN 436
5,000
PVN 544
8,000
285
PVN 549
12,000
315
PVN 358
2,000
150
PVN 430
2,000
PVN 433
3,150
PVN 439
4,000
PVN 436
5,000
PVN 350
1,250
PVN 358
2,000
250
395
285
315
350
180
225
325
250
165
225
180
225
250
120
2
11,½“
175
150
165
180
18
GKN Stromag IGE...FG series >
The GKN Stromag IGE...FG concept
The GKN Stromag IGE...FG is a highly flexible rubber coupling with a
progressive characteristic (see figure). It is ideal for the transmission
of high torques with its particularly compact design and light weight.
Coupling gr. 8
The coupling’s external part can be connected directly to a diesel
engine’s flywheel or the like. The torque is transmitted to the hub and
the cardan shaft via rubber elements arranged in a star pattern. The
internal part of the coupling, consisting of the hub and support flange,
is radially mounted in the external part of the coupling via the shaft
and bushing and fastened in the axial direction using rings.
Torque
The radial and axial forces generated by the cardan shaft are absorbed
by the coupling and conveyed to the main engine bearing.
The series extends across a nominal torque range from 4000 Nm to
25000 Nm.
The GKN Stromag IGE...FG is manufactured exclusively from metal or
high-quality cast parts. They are manufactured from turned parts to
ensure that they run smoothly and quietly.
Twisting angleϕ
The GKN Stromag IGE...FG coupling is ideal for absorbing large impact
torques due to the use of extremely strong rubber elements. Large
alternating torques are also permitted, as the damping heat is easily
discharged via the space between the individual elements.
DD_881105 - 000
GKN Stromag IGE...FG performance table >
IGECoupling size
Nominal
torque
Maximum
torque
Adm.
alternating
torque
Dyn.
Torsion spring stiffness
TKN
Tkmax
TWzuL (with ...% initial load)
CT dyn (with ...% initial load)
nmax
Ψ
PKV 60
Nm
Nm
[kNm/rad]
[kNm/rad] 1) 2)
min-1
1) 2)
[W] 3)
Adm.
Speed
10 %
25 %
50 %
75 %
100 %
10 %
25 %
50 %
75 %
100 %
Relative
damping
Adm.
damping
power
4
4,000
12,000
0.20
0.80
1.30
1.69
2.08
14.0
31.6
60.9
90.2
120
3,900
1.0
940
8
8,000
24,000
0.40
1.60
2.60
3.38
4.16
36.2
73.2
135
196
258
2,880
1.0
1,200
12.5
12500
37,500
0.63
2.50
4.06
5.28
6.50
59.9
118
214
310
406
2,500
1.0
1,380
25
25000
75,000
1.25
5.00
8.13
10.56
13.00
139
274
497
721
945
2,150
1.0
1,800
1) For: TW = 0.2 • TKN; f = 10 Hz
2) Material-related tolerances as high as ±15% are possible.
3) The PKV 60 value describes the damping performance that can be absorbed over 60
minutes. Permanently absorbable damping performance PKV∞ = 0.5 • PKV 60
19
GKN Stromag IGE...FG-shaft connection >
A side
B side
DD 881467 - 000
4
8
12.5
25
Cardan flange
225
250
285
315
a
380
514
593
690
b
354
486
561
650
c
328
458
529
610
e1
329
460
530
612
f1
225
274
330
400
g1
140
140
175
175
g2
196
218
245
280
k1
13.5
17.5
17.5
22
k2
M16
M18
M20
M22
l3
126
140
165
190
n2
62.5
72
78
90
s1
3
4
5
5
s2
4
5
6
6
t1
22
24
25
34
w1
48
52
63
73
k1
16x22.5°
16x22.5°
16x22.5°
16x22.5°
k3
8x45°
8x45°
8x45°
8x45°
64
129
190
310
Ji
0.23
0.83
1.60
3.30
Ja
0.83
3.07
5.98
13.40
Mass
moment
mom.kgm2
angle
(for drilling)
Masses
kg
Lengths
mm
Diameter
mm
Coupling size
Gges
20
Characteristic values for cardan shaft couplings >
TKN
The coupling’s nominal torque can be continuously transmitted over the whole permitted speed range. It must
not be exceeded by the system’s nominal torque TN.
TKN ≥ TN
TKmax1
The coupling’s maximum torque TKmax1 can be endured as a peak load and may not be exceeded by normal,
non‑stationary peak system torques Tmax1.
A system’s normal non-stationary modes are unavoidable and occur repeatedly (e.g.: starting/stopping
processes, resonance pass, switching processes, acceleration processes, etc.).
TKmax1 ≥ Tmax1
TKmax2
The coupling’s maximum torque TKmax2 can be endured as a rarely occurring peak load and may not be exceeded
by normal, non-stationary peak system torques Tmax2.
Anomalous, non-stationary peak system torques are avoidable and are not part of the planned operating scheme
(e.g.: emergency stop, sync failure, short circuit, etc.).
A coupling overload due to anomalous, non-stationary peak system torques Tmax2 shortens the system’s service
life and is tolerated in individual cases.
TKmax2 ≥ Tmax2
TKw
The admissible permanent alternating torque indicates the amplitude of the admissible permanent periodic torque fluctuation. This torque
may be superimposed on a base load of TKN.
In this process, the max damping power PKV must also be checked.
DD 8700103 - 000
21
Product catalogue
Characteristic values for cardan shaft couplings >
CTdyn
The dynamic torsion spring stiffness indicates the ratio of torque amplitude to torsion angle amplitude
during an oscillation.
The torque amplitude is superimposed on an initial load (coupling torque). For couplings with a linear
characteristic (GKN Stromag Periflex® CS and AFL), the CTdyn value over the coupling torque is constant.
However, it changes depending on the amplitude, the frequency and the temperature of the flexible
element.
The CTdyn data relate to a coupling torque of 0.8 • TKN, an alternating torque of 0.2 • TKN and a frequency
of 10 Hz for a coupling at operating temperature with a surface temperature of about 50°C.
The GKNm Stromag IGE coupling has a progressive characteristic. I.e. the CTdyn value also changes
depending on the coupling torque.
CTdyn = Tel
ϕw
Ψ
The relative damping is a measure of the ability of the coupling to convert part of the vibration energy
into heat.
The damping can be determined using the damping loop (hysteresis loop).
Ψ=
The AD surface is a measure of the damping activity WD during a vibration cycle.
The Ael surface represents the flexible strain activity Wel during a load.
The data relate to a coupling torque of 0.8 • TKN, an alternating torque of 0.2 • TKN and a frequency of
10 Hz for a coupling at operating temperature with a surface temperature of about 50°C.
WD
Wel
=
AD
Ael
Pkv
The permitted damping performance indicates how much damping (heat) the coupling can permanently absorb and dissipate. The sum of
the damping performance from every vibration order (i.e. PVi) must be less than the coupling’s damping performance.
Pvi =
π
2π 2+1
Ψ
Twi2 • fi
•
CTdyn
PKV ≥ ∑ PVi
The PKV 60 value indicated describes the damping performance that can be absorbed over an hour.
The PKV 60 value needs to be multiplied by a factor of 0.5 to determine the damping performance that can be permanently absorbed (PKVR).
22
Questionnaire on the design of flexible couplings >
Main engine
Engine type (electric, combustion engine, etc.)
Engine make (manufacturer, type)
Engine installation (rigid, flexible)
Engine housing
Flywheel centering diameter
(mm)
Nominal capacity
(kW)
Nominal speed
(min-1)
Speed range
(min-1)
Nominal torque
(Nm)
Maximum torque (breakdown torque)
(Nm)
Mass moment of inertia
(kgm2)
Number of start-ups or reversals every hour
Cardan shaft
Deflection angle
(°)
Type of cardan shaft deflection (“z” or “w”)
Cardan shaft type (manufacturer, size)
Length of the cardan shaft
(mm)
Anti-friction coating for translational gearing? Yes/No
Mass moment of inertia
(kgm2)
Gear unit
Reduction
Mass moment of inertia
(kgm2)
Main engine
Type (generator, ventilator, compressor, fixed or variable
pitch propeller)
Main or auxiliary drive
Design type (stand-alone or flange-mounted)
(kgm2)
Mass moment of inertia
Clutch
Insertion location in the drive train (enclose schematic diagram)
Ambient temperature
(ºC, ºK)
Classification society
Ship type
Ice class
23
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Ipsley House
Ipsley Church Lane
Redditch
Worcestershire B98 0TL
P: +44 (0)1527 517 715
Couplings
Clutches
Gearboxes
Driveshafts
Brakes
Controls
Electric
Wheels
GKN Stromag AG
The GKN Stromag AG
is a company of GKN Land Systems
Find out more about GKN Stromag
global trade representatives
GKN LS 52 EN 1114 pu
Hansastraße 120
59425 Unna
P: +49 2303 102-0
F: +49 2303 102-201
www.gknlandsystems.com info.stromag@gkn.com