ROTEX® SP "Non Sparking"
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40228 EN
1 of 27
4
ROTEX® SP "Non Sparking"
Single-cardanic
Torsionally flexible jaw couplings
type GN, GND, EN and their
combinations
according to directive 2014/34/EU
for finish bored, pilot bored and
unbored couplings
Type GN (No. 080)
Type GND (No. 082)
Type EN (No. 081)
Double-cardanic
Torsionally flexible jaw couplings
type E4-DKM, ZS-DKM-C and their
combinations
according to directive 2014/34/EU
for finish bored, pilot bored and
unbored couplings
Type E4-DKM (No. 086)
Type ZS-DKM-C (No. 085)
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40228 EN
2 of 27
4
ROTEX® SP „Non Sparking“ is part of the product line of torsionally flexible jaw couplings. Subject to
its design it is furthermore a shear type system providing for emergency operating features. Moreover,
ROTEX® SP „Non Sparking“ is a non-sparking/electrically conductive coupling system.
Type ZS-DKM-C (No. 085) is characterized by its ability for radial disassembly.
Table of contents
1
Technical data
3
2
Advice
9
2.1
2.2
2.3
2.4
2.5
2.6
3
4
General advice
Safety and advice symbols
General hazard warnings
Intended use
Coupling selection
Reference to EC Machinery Directive 2006/42/EC
9
9
9
10
10
10
Storage, transport and packaging
10
3.1
3.2
10
11
Storage
Transport and packaging
Assembly
11
4.1
4.2
4.3
4.4
4.5
4.6
4.7
11
13
14
15
15
16
17
Components of the couplings
Advice for finish bore
Assembly of the coupling (general)
Assembly of types GN, GND and EN
Assembly of type E4-DKM
Assembly of type ZS-DKM-C
Displacements - alignment of the couplings
5
Start-up
19
6
Breakdowns, causes and elimination
20
7
Disposal
21
8
Maintenance and service
22
9
Spares inventory, customer service addresses
22
10
Enclosure A
Advice and instructions regarding the use in
10.1 Intended use in
hazardous locations
hazardous locations
10.2 Inspection intervals for couplings in
10.3 Standard values of wear
10.4 Permissible coupling materials in
23
hazardous locations
hazardous locations
10.5
marking of coupling for hazardous locations
10.6 EU Certificate of conformity
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
23
24
25
25
26
27
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
1
40228 EN
3 of 27
4
Technical data
Illustration 1: Type GN (No. 080) - component 1, 1a, 1b: steel (St)
Illustration 2: Type GN (No. 080) - component 1, 1a, 1b: cast iron (GJL)
Table 1: Type GN (No. 080) - component 1, 1a, 1b: steel (St)
Size
Spider 1)
(component
2)
Rated torque
[Nm]
24
35
28
95
38
190
42
265
48
310
55
410
65
625
Component
(St)
1a
1b
1a
1b
1
1b
1
1b
1
1b
1
1b
1
1b
Dimensions [mm] 3)
Component 1, 1a, 1b steel (St)
Max.
finish
bore d1 2)
35
40
48
55
62
74
80
L
l1
E
b
s
DH
dH
D; D1
N
Component
Dimensions [mm] 3)
Component 1c
Max.
finish
l2
DA
bore d2
2)
78
98
90
115
114
139
126
151
140
164
160
185
185
210
30
50
35
60
45
70
50
75
56
80
65
90
75
100
18
14
2.0
55
27
55
20
15
2.5
65
30
24
18
3.0
80
38
26
20
3.0
95
46
28
21
3.5
105
51
30
22
4.0
120
60
35
26
4.5
135
68
-
1c
28
30
61
65
-
1c
32
35
72
70
80
85
995
95
105
110
120
115
135
27
28
32
37
47
-
1c
42
45
87
1c
48
50
103
1c
55
56
114
1c
65
65
130
1c
75
75
146
Table 2: Type GN (No. 080) - component 1, 1a, 1b: cast iron (GJL)
Size
38
42
48
Spider 1)
(component
2)
Rated torque
[Nm]
190
265
310
55
410
65
625
Component
(GJL)
1
1a
1b
1
1a
1b
1
1a
1b
1
1a
1
Dimensions [mm] 3)
Component 1, 1a, 1b: cast iron (GJL)
Max.
finish
bore d1 2)
40
48
45
55
52
62
60
74
70
L
l1
E
b
s
DH
dH
D; D1
N
Compo
nent
Dimensions [mm] 3)
Component 1c
Max.
finish
l2
DA
bore d2
2)
114
45
139
70
126
50
151
75
140
56
66
24
18
3.0
80
38
78
75
26
20
3.0
95
46
94
85
28
21
3.5
105
51
164
80
160
65
30
22
4.0
120
60
185
75
35
26
4.5
135
68
104
98
118
115
37
1c
42
45
87
1c
48
50
103
1c
55
56
114
52
1c
65
65
130
61
1c
75
75
146
62
40
65
45
69
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and thread for setscrew
3) Dimensions G and t see table 8.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
1
40228 EN
4 of 27
4
Technical data
Illustration 3: Type GND (No. 082)
Table 3: Type GND (No. 082)
Size
24
28
38
42
48
55
65
Spider 1) (component 2)
Rated torque [Nm]
35
95
190
265
310
410
625
Dimensions [mm] 3)
Component 1c
Max. finish bore
d1 2)
28
32
42
48
55
65
75
L
l1; l2
E
b
s
DA
dH
a
78
90
114
126
140
160
185
30
35
45
50
56
65
75
18
20
24
26
28
30
35
14
15
18
20
21
22
26
2.0
2.5
3.0
3.0
3.5
4.0
4.5
61
72
87
103
114
130
146
27
30
38
46
51
60
68
4
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and thread for setscrew
3) Dimensions G and t see table 8.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
1
40228 EN
5 of 27
4
Technical data
Illustration 4: Type EN (No. 081) - component 1, 1a, 1b: steel (St)
Illustration 5: Type EN (No. 081) - component 1, 1a, 1b: EN-GJL-250
Table 4: Type EN (No. 081) - component 1, 1a, 1b: steel (St)
Size
Spider 1)
(component
2)
Rated torque
[Nm]
24
35
28
95
38
190
42
265
48
310
55
410
65
625
Component
(St)
1a
1b
1a
1b
1
1b
1
1b
1
1b
1
1b
1
1b
Dimensions [mm] 3)
Component 1, 1a, 1b steel (St)
Max.
finish
bore d1 2)
35
40
48
55
62
74
80
L
l1
78
98
90
115
114
139
126
151
140
164
160
185
185
210
30
50
35
60
45
70
50
75
56
80
65
90
75
100
Dimensions [mm] 3)
Component 5c
Max.
finish
l2
l3
DA
bore d2 2)
E
b
s
DH
dH
D; D1
N
Component
18
14
2.0
55
27
55
-
5c
19
36
22
61
20
15
2.5
65
30
65
-
5c
22
42
26
72
24
18
3.0
80
38
28
50
30
87
20
3.0
95
46
5c
35
56
34
103
28
21
3.5
105
51
5c
40
60
36
114
30
22
4.0
120
60
5c
45
66
40
130
35
26
4.5
135
68
27
28
32
37
47
-
5c
26
70
80
85
995
95
105
110
120
115
135
5c
55
75
44
146
Table 5: Type EN (No. 081) - component 1, 1a, 1b: cast iron (GJL)
Size
38
42
48
Spider 1)
(component
2)
Rated torque
[Nm]
190
265
310
55
410
65
625
Component
(GJL)
1
1a
1b
1
1a
1b
1
1a
1b
1
1a
1
Dimensions [mm] 3)
Component 1, 1a, 1b: cast iron (GJL)
Max.
finish
bore d1 2)
40
48
45
55
52
62
60
74
70
L
l1
114
45
139
70
126
50
151
75
140
56
E
b
s
DH
dH
24
18
3.0
80
38
D; D1
66
78
75
26
20
3.0
95
46
94
85
28
21
3.5
105
51
164
80
160
65
30
22
4.0
120
60
185
75
35
26
4.5
135
68
104
98
118
115
N
37
Component
Dimensions [mm] 3)
Component 5c
Max.
finish
l2
l3
DA
bore d2 2)
5c
28
45
30
87
5c
35
50
34
103
5c
40
56
36
114
52
5c
45
65
40
130
61
5c
55
75
44
146
62
40
65
45
69
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and thread for setscrew
3) Dimensions G, t and t1 see table 8.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
1
40228 EN
6 of 27
4
Technical data
Illustration 6: Type E4-DKM (No. 086)
Table 6: Type E4-DKM (No. 086)
Size
24
28
38
42
48
55
65
Spider 1)
(component
2)
Rated torque
[Nm]
35
95
190
265
310
410
625
Dimensions [mm] 3)
Component 5bc
Dimensions [mm]
Component 6
Max. finish
bore d2 2)
l1; l2
l3; l4
DA
a
Ltotal
DH
dH
l11
E
b
s
20
22
28
38
42
45
55
22
26
30
34
36
40
44
46
53
62
69
74
82
93
61
72
87
103
114
130
146
4.0
4.0
4.0
4.0
4.0
4.0
4.0
96
110
128
142
152
168
190
55
65
80
95
105
120
135
27
30
38
46
51
60
68
16
18
20
22
24
28
32
18
20
24
26
28
30
35
14
15
18
20
21
22
26
2.0
2.5
3.0
3.0
3.5
4.0
4.5
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and thread for setscrew
3) Dimensions G and t1 see table 8.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
1
40228 EN
7 of 27
4
Technical data
Illustration 7: Type ZS-DKM-C (No. 085)
Table 7: Type ZS-DKM-C (No. 085)
Size
24
28
38
42
48
55
65
Dropout
center
length
L [mm]
100
140
100
140
100
140
100
140
140
140
180
200
140
180
Spider 1)
(component
2)
Rated torque
[Nm]
Dimensions
[mm]
Component
6c Al-H 3)
Dimensions [mm]
Component 7.5/7.6 steel (St)
Max.
finish
bore d 2)
35
28
95
38
190
45
265
55
310
60
410
70
625
80
Ltotal
145
185
151
191
171
211
178
218
230
240
280
300
260
300
l1;
l2
x1;
x2
E
b
s
DH
D
DA
dH
N
M
TA
[Nm]
dB
30
22.5
18
14
2.0
55
-
61
27
-
M6
14
14
35
25.5
20
15
2.5
65
-
72
30
-
M8
35
16
45
35.5
24
18
3.0
80
-
87
38
-
M8
35
22
50
39
26
20
3.0
95
85
103
46
28
M10
69
30
56
45
28
21
3.5
105
95
114
51
32
M12
120
35
65
50
30
22
4.0
120
110
130
60
37
M12
120
40
60
35
26
4.5
135
115
146
68
47
M12
120
48
75
l11
49
89
41
81
33
73
26
66
62
50
90
110
40
80
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2; transmittable torque as per 92 Sh A-GS
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and thread for setscrew
3) Size 42 with drop-out center length L=100 mm made of steel
Type 7.5
DH clamping hub without feather keyway for doublecardanic combination
Type 7.6
DH clamping hub with feather keyway for double-cardanic
combination
Illustration 8
Hubs type 7.5 (without feather keyway) may be used in category 3 only.
®
ROTEX couplings with attachments that can generate heat, sparks and static charging
(e. g. combinations with brake drums, brake disks, overload systems like torque limiters,
fans etc.) are not permitted for the use in hazardous areas.
A separate analysis must be performed.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
1
40228 EN
8 of 27
4
Technical data
Table 8: Type ZS-DKM-C - Torques and surface pressure of DH clamping hubs type 7.5
Size
Clamping screw M1 1)
Dimension t2
Dimension e1
Dimension ØDK1
Dimension e2
Dimension ØDK2
Tightening torque TA
[Nm]
24
M6
10.5
20
57.5
-
28
M8
12
25
72.6
-
38
M8
17
30
83.2
-
42
M10
18
34
96.7
32
93.3
48
M12
21
38
108.4
36
105.0
55
M12
26
44
121.8
42.5
119.2
65
M12
33
50
132.4
45
123.5
14
35
35
69
120
120
120
Transmittable torque of clamping hub [Nm]
Bore Ø
Ø10
Ø11
Ø12
Ø14
Ø15
Ø16
Ø18
Ø19
Ø20
Ø22
Ø24
Ø25
Ø28
Surface pressure [N/mm2]
37.1
75.0
40.8
68.2
44.5
62.5
52.0
53.6
55.7
50.0
59.4
46.9
66.8
41.7
70.5
39.5
74.2
37.5
81.6
34.1
89.1
31.3
92.8
30.0
103.9
26.8
Ø30
Ø32
Ø35
Ø38
Ø40
Ø42
Ø45
68.3
123.4
75.2
112.2
82.0
102.8
95.7
88.1
102.5
82.3
109.3
77.1
123.0
68.6
129.8
64.9
136.7
61.7
150.3
56.1
164.0
51.4
170.8
49.4
191.3
44.1
205
41.1
219
38.6
239
35.3
260
32.5
95.7
61.8
102.5
55.7
109.3
54.1
123.0
48.1
129.8
45.6
136.7
43.3
150.3
39.3
164.0
36.1
170.8
34.6
191.3
30.9
205
28.9
219
27.1
239
24.7
260
22.8
273
21.6
287
20.6
307
19.2
Ø48
Ø50
Ø55
Ø60
152.2
90.3
163.0
84.2
173.9
79.0
195.6
70.2
206.5
66.5
217.4
63.2
239.1
57.4
260.8
52.7
271.7
50.5
304.3
45.1
326
42.1
348
39.5
380
36.1
413
33.3
435
31.6
456
30.1
489
28.1
522
26.3
543
25.3
598
23.0
238.6
105.9
254.5
99.3
286.3
88.2
302.2
83.6
318.1
79.4
349.9
72.2
381.7
66.2
397.6
63.5
445.3
56.7
477
52.9
509
49.6
557
45.4
604
41.8
636
39.7
668
37.8
716
35.3
763
33.1
795
31.8
875
28.9
954
26.5
Ø65
Ø70
Ø75
Ø80
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
318.1
71.1
349.9
64.6
381.7
59.2
397.6
56.8
445.3
50.8
477
47.4
509
44.4
557
40.6
604
37.4
636
35.5
668
33.8
716
31.6
763
29.6
795
28.4
875
25.8
954
23.7
1034
21.9
1113
20.3
381.7
49.3
397.6
47.4
445.3
42.3
477
39.5
509
37.0
557
33.8
604
31.2
636
29.6
668
28.2
716
26.3
763
24.7
795
23.7
875
21.5
954
19.7
1034
18.2
1113
16.9
1193
15.8
1272
14.8
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
2
KTR-N
Sheet:
Edition:
40228 EN
9 of 27
4
Advice
2.1 General advice
Please read through these operating/assembly instructions carefully before you start up the coupling.
Please pay special attention to the safety instructions!
®
The ROTEX coupling is suitable and approved for the use in hazardous locations. When using the
coupling in hazardous locations, please observe the special advice and instructions regarding safety
in enclosure A.
The operating/assembly instructions are part of your product. Please store them carefully and close to the
coupling. The copyright for these operating/assembly instructions remains with KTR.
2.2 Safety and advice symbols
STOP
!

Warning of potentially explosive
atmospheres
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death caused by explosion.
Warning of personal injury
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death.
Warning of product damages
This symbol indicates notes which may contribute to
preventing material or machine damage.
General advice
This symbol indicates notes which may contribute to
preventing adverse results or conditions.
Warning of hot surfaces
This symbol indicates notes which may contribute to
preventing burns with hot surfaces resulting in light to
serious bodily injuries.
2.3 General hazard warnings
STOP
With assembly, operation and maintenance of the coupling it has to be made sure that the
entire drive train is secured against accidental switch-on. You may be seriously hurt by
rotating parts. Please make absolutely sure to read through and observe the following
safety indications.
 All operations on and with the coupling have to be performed taking into account "safety first".
 Please make sure to switch off the power pack before you perform your work on the coupling.
 Secure the power pack against accidental switch-on, e. g. by providing warning signs at the place of switch-on
or removing the fuse for current supply.
 Do not reach into the operation area of the coupling as long as it is in operation.
 Please secure the coupling against accidental contact. Please provide for the necessary protection devices
and covers.
Please observe protection
note ISO 16016.
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4
Advice
2.4 Intended use
You may only assemble, operate and maintain the coupling if you
 have carefully read through the operating/assembly instructions and understood them
 had technical training
 are authorized by your company
The coupling may only be used in accordance with the technical data (see chapter 1). Unauthorized modifications
on the coupling design are not admissible. We will not assume liability for any damage that may arise. In the
interest of further development we reserve the right for technical modifications.
®
The ROTEX SP „Non Sparking“ described in here corresponds to the state of the art at the time of printing of
these operating/assembly instructions.
2.5 Coupling selection
!
For a long-lasting and failure-free operation of the coupling it must be selected according to
the selection instructions (according to DIN 740 part 2) for the particular application (see
®
catalogue drive technology "ROTEX ").
If the operating conditions (performance, speed, modifications on engine and machine)
change, the coupling selection must be reviewed.
Please make sure that the technical data regarding torque refer to the spider only. The
transmittable torque of the shaft-hub-connection must be reviewed by the customer and is
subject to his responsibility.
For drives subject to torsional vibrations (drives with cyclic stress due to torsional vibrations) it is necessary to
perform a torsional vibration calculation to ensure a reliable selection. Typical drives subject to torsional vibrations
are e. g. drives with diesel engines, piston pumps, piston compressors etc. If requested, KTR will perform the
coupling selection and the torsional vibration calculation.
2.6 Reference to EC Machinery Directive 2006/42/EC
The couplings supplied by KTR should be considered as components, not machines or partly completed
machines according to EC Machinery Directive 2006/42/EC. Consequently KTR does not have to issue a
declaration of incorporation. For details about safe assembly, start-up and safe operation please refer to the
present operating/assembly instructions considering the warnings.
3
Storage, transport and packaging
3.1 Storage
The coupling hubs are supplied in preserved condition and can be stored at a dry and roofed place for 6 - 9
months.
The features of the coupling spiders (elastomers) remain unchanged for up to 5 years with favourable storage
conditions.
!
The storage rooms must not include any ozone-generating devices like e. g. fluorescent
light sources, mercury-vapour lamps or electrical high-voltage appliances.
Humid storage rooms are not suitable.
Please make sure that condensation is not generated. The best relative air humidity is less
than 65 %.
Please observe protection
note ISO 16016.
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4
Storage, transport and packaging
3.2 Transport and packaging
In order to avoid any injuries and any kind of damage please always make use of proper
transport and lifting equipment.
!
The couplings are packed differently each depending on size, number and kind of transport. Unless otherwise
contractually agreed, packaging will follow the in-house packaging specifications of KTR.
4
Assembly
The coupling is generally supplied in individual parts. Before assembly the coupling has to be inspected for
completeness.
4.1 Components of the couplings
Components of ROTEX®, type GN (No. 080)
Component
1
1c
2
Quantity
1
1
1
3
2
Description
Hub
GN hub SP
Spider (92 ShA)
Setscrews
DIN EN ISO 4029
Illustration 9: Type GN (No. 080)
Components of ROTEX®, type GND (No. 082)
Component
1c
2
Quantity
2
1
3
2
Description
GN hub SP
Spider (92 ShA)
Setscrews
DIN EN ISO 4029
Illustration 10: Type GND (No. 082)
Please observe protection
note ISO 16016.
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Assembly
4.1 Components of the couplings
Components of ROTEX®, type EN (No. 081)
Component
1
2
Quantity
1
1
3
2
5c
1
Description
Hub
Spider (92 ShA)
Setscrews
DIN EN ISO 4029
EN hub SP
Illustration 11: Type EN (No. 081)
Components of ROTEX®, type E4-DKM (No. 086)
Component
2
Quantity
2
3
2
5bc
6
2
1
Description
Spider (92 ShA)
Setscrews
DIN EN ISO 4029
E4 hub SP
DKM spacer
Illustration 12: Type E4-DKM (No. 086)
Components of ROTEX®, type ZS-DKM-C (No. 085)
Component
Quantity
2
2
4
2
1)
6c
1
7.5/7.6
2
Description
Spider
(98 ShA-GS)
Cap screws
DIN EN ISO 4762
DKM spacer SP
DH clamping hub with
half length tapered
groove pin
DIN EN ISO 8745
(2 pieces)
1) each DH clamping hub
Illustration 13: Type ZS-DKM-C (No. 085)
Hubs type 7.5 (without feather keyway) may be used in category 3 only.
Please observe protection
note ISO 16016.
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Operating/Assembly instructions
4
40228 EN
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4
Assembly
4.1 Components of the couplings
Features of standard spiders
1)
92 Shore-A
®
T-PUR (orange)
Spider hardness
(Shore)
98 Shore-A-GS
PUR (red)
2)
Marking
(colour)
1) Use of spiders applies with all types except for type ZS-DKM-C (No. 085)
2) Use of spiders applies with type ZS-DKM-C (No. 085) only
4.2 Advice for finish bore
STOP
The maximum permissible bore diameters d (see table 1 to
7 in chapter 1 - technical data) must not be exceeded. If
these figures are disregarded, the coupling may tear.
Rotating particles may cause danger to life.
 Hub bores machined by the customer have to observe
concentricity or axial runout, respectively (see illustration
14).
 Please make absolutely sure to observe the figures for
Ø dmax.
 Carefully align the hubs when the finish bores are drilled.
 Applies with all types except for type ZS-DKM-C:
Please provide for a setscrew according to DIN EN ISO
4029 with a cup point or an end plate to fasten the hubs
axially.
 Only valid with type ZS-DKM-C:
Please provide for a setscrew or an end plate to fasten the
hubs axially.
!
Illustration 14: Concentricity
and axial runout
The customer bears the sole responsibility for all machining processes performed
subsequently on unbored or pilot bored as well as finish machined coupling components
and spare parts. KTR does not assume any warranty claims resulting from insufficient
remachining.
KTR supplies unbored or pilot bored coupling components and spare parts only upon
explicit request of the customer. These parts are additionally labelled with the symbol
.
Table 8: Setscrews DIN EN ISO 4029
Size
Dimension G
1)
Dimension t
2)
Dimension t1
Tightening torque TA [Nm]
24
M5
10
6
2
28
M8
15
7
10
38
M8
15
7
10
42
M8
20
10
10
48
M8
20
10
10
55
M10
20
12
17
65
M10
20
12
17
1) Dimension t applies for types GN and GND only
2) Dimension t1 applies for types EN and E4-DKM
Please observe protection
note ISO 16016.
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Operating/Assembly instructions
4
40228 EN
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4
Assembly
4.2 Advice for finish bore
Table 9: Cap screws DIN EN ISO 4762 – 12.9
Size
Dimension G
1)
Quantity z
Tightening torque TA [Nm]
24
M6x20
2
14
28
M8x25
2
35
38
M8x30
2
35
42
M10x30
2
69
48
M12x35
2
120
55
M12x40
2
120
65
M12x40
2
120
1) each DH clamping hub
Table 10: Recommended fit pairs acc. to DIN 748/1
Bore [mm]
above
up to
50
Shaft tolerance
Bore tolerance
k6
m6
H7
(KTR standard)
50
If a feather keyway is intended to be used in the hub, it should correspond to the tolerance ISO JS9 (KTR
standard) with normal operating conditions or ISO P9 with difficult operating conditions (frequently alternating
torsional direction, shock loads, etc.). The keyway should preferably be located between the cams. With axial
fastening by setscrews the tapping should be located on the keyway.
The transmittable torque of the shaft-hub-connection must be reviewed by the customer and is subject to his
responsibility.
4.3 Assembly of the coupling (general)

We recommend to inspect bores, shaft, keyway and feather key for dimensional accuracy
before assembly.
Heating the hubs lightly (approx. 80 °C) allows for an easier mounting on the shafts.
Not necessary with type ZS-DKM-C.
Please pay attention to the ignition risk in hazardous locations!
STOP
!

Touching the heated hubs causes burns.
Please wear safety gloves.
With the assembly please make sure that the distance dimension E or a (see table 1 to 7) is
observed to allow for axial clearance of the spider when in operation.
Disregarding this advice may cause damage to the coupling.
Basically align the spider centrally with the hubs or spacers after assembly.
Please observe protection
note ISO 16016.
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40228 EN
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4
Assembly
4.4 Assembly of types GN, GND and EN
 Mount the hubs on the shaft of driving and driven side (see illustration 15).
 Insert the spider into the cam section of the hub on the driving or driven side.
 Shift the power packs in axial direction until the distance dimension L is achieved (see illustration 16).
 If the power packs are already firmly assembled, shifting the hubs axially on the shafts allows for adjusting
the distance dimension L.
 Fasten the hubs by tightening the setscrews DIN EN ISO 4029 with a cup point (tightening torques see
table 8).

If the shaft diameters with inserted feather key are smaller than dimension d H (see table 1
to 5) of the spider, one or two shaft ends may protude into the spider.
Illustration 15: Assembly of the hubs
Illustration 16: Assembly of coupling
4.5 Assembly of type E4-DKM
 Mount the E4 hubs onto the shaft of driving and driven side (see illustration 17).
 The internal sides of the E4 hubs must be flush with the front sides of the shafts.
 Fasten the E4 hubs by tightening the setscrews DIN EN ISO 4029 with a cup point (tightening torque see
table 8).
 Insert both spiders into the cam section of the E4 hubs on the driving and driven side.
 Put the DKM spacer into one of the two spiders.
 Shift the power packs in axial direction until the dimension Ltotal is achieved (see illustration 18 and table 6).
Illustration 17: Assembly of the E4 hubs
Please observe protection
note ISO 16016.
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Assembly
4.6 Assembly of type ZS-DKM-C
 Remove the shells from the hub body (see illustration 19).
 Fit the hub bodies together with the spiders and DKM spacer SP (see illustration 20).
 Mount the fitted unit along with the shells and the clamping screws onto the shaft ends of the driving and
driven machine (see illustration 21).
 Hand-tighten the components for the time being until the hub bodies with the shells fit closely to the shaft.
 Shift the DH clamping hubs in axial direction until the dimension Ltotal is achieved (see illustration 22 and
table 7).
 Secure the DH clamping hubs by tightening the clamping screws reciprocally. The screws have to be tightened
to the tightening torques TA specified in table 9 by means of a suitable torque wrench.
!
Having started up the coupling the tightening torques of the screws have to be inspected
during the usual inspection intervals.
Illustration 19: Disassembly of shells
Illustration 20: Assembly of hub bodies,
spiders and DKM spacer SP
Illustration 21: Assembly of component assembly
onto the shafts
Illustration 22: Assembly of coupling
Please observe protection
note ISO 16016.
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Operating/Assembly instructions
4
40228 EN
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4
Assembly
4.7 Displacements - alignment of the couplings
The displacement figures specified in table 11 to 13 provide for sufficient safety to compensate for external
influences like, for example, heat expansion or foundation settling.
In order to ensure a long service life of the coupling and avoid dangers with the use in
hazardous locations, the shaft ends must be accurately aligned.
Please absolutely observe the displacement figures indicated (see table 11 to 13). If the
figures are exceeded, the coupling will be damaged.
The more accurate the alignment of the coupling, the longer is its service life.
!
Please note:
 The displacement figures specified in table 11 to 13 are maximum figures which must not arise in parallel. If
radial and angular displacements arise at the same time, the permissible displacement values may only be
used proportionally (see illustration 25).
 Please inspect with a dial gauge, ruler or feeler whether the permissible displacement figures of tables 11 to
13 can be observed.
Angular displacements
Radial displacements
Axial displacements
Kw = L1max. - L1min. [mm]
Lmax = L + Ka [mm]
Illustration 23: Displacements (single-cardanic)
Angular displacements
Axial displacements
Illustration 24: Displacements (double-cardanic)
Radial displacements
Please observe protection
note ISO 16016.
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Operating/Assembly instructions
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40228 EN
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4
Assembly
4.7 Displacements - alignment of the couplings
Examples of the displacement combinations
specified in illustration 25:
Illustration 25:
Combinations of
displacement
Example 1:
Kr = 30 %
Kw = 70 %
Example 2:
Kr = 60 %
Kw = 40 %
Ktotal = Kr + Kw  100 %
Table 11: Displacement figures for 92 Shore-A
Size
Max. axial displacement Ka [mm]
Max. radial displacement
1500 rpm
Kr [mm] with
3000 rpm
Kw [degree] max. angular displacement
with n=1500 rpm Kw [mm]
Kw [degree] max. angular displacement
with n=3000 rpm Kw [mm]
24
-0.5
+1.4
0.22
0.15
0.9
0.85
0.8
0.75
28
-0.7
+1.5
0.25
0.17
0.9
1.05
0.8
0.85
38
-0.7
+1.8
0.28
0.19
1.0
1.35
0.9
1.10
42
-1.0
+2.0
0.32
0.21
1.0
1.70
0.9
1.40
48
-1.0
+2.1
0.36
0.25
1.1
2.00
1.0
1.60
55
-1.0
+2.2
0.38
0.26
1.1
2.30
1.0
2.00
65
-1.0
+2.6
0.42
0.28
1.2
2.70
1.1
2.30
38
+1.8
-1.4
0.77
0.70
1.0
0.9
42
+2.0
-2.0
0.84
0.75
1.0
0.9
48
+2.1
-2.0
0.91
0.82
1.0
0.9
55
+2.2
-2.0
1.01
0.81
1.0
0.9
65
+2.6
-2.0
1.17
1.05
1.0
0.9
Table 12: Displacement figures - type E4-DKM (No. 086)
Size
Max. axial displacement Ka [mm]
Max. radial displacement
Kr [mm] with n =
Kw [degree] max. angular
displacement with n =
1500 rpm
3000 rpm
1500 rpm
3000 rpm
24
+1.4
-1.0
0.59
0.53
1.0
0.9
28
+1.5
-1.4
0.66
0.60
1.0
0.9
Table 13: Displacement figures for 98 Sh A-GS - Type ZS-DKM-C (No. 085)
Size
24
28
38
42
48
55
65
Max. axial
displacement
Ka [mm]
+1.4 / -1.0
+1.5 / -1.4
+1.8 / -1.4
+2.0 / -2.0
+2.1 / -2.0
+2.2 / -2.0
+2.6 / -2.0
Please observe protection
note ISO 16016.
Max. angular
displacement Kw
[degree] with n =
1500
3000
rpm
rpm
1.0
0.75
1.0
0.75
1.0
0.75
1.0
0.75
1.0
0.75
1.0
0.75
1.0
0.75
Drawn:
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Max. radial displacement Kr [mm]
with shaft distance dimension L with n =
1500 rpm
3000 rpm
100
140
180
250
100
140
180
250
1.17
1.06
0.99
0.91
0.87
0.70
-
1.87
1.76
1.69
1.60
1.57
1.40
1.31
2.09
2.00
-
0.87
0.80
0.74
0.68
0.65
0.52
-
1.40
1.32
1.27
1.20
1.18
1.05
0.98
1.57
1.50
-
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4
Start-up
Before start-up of the coupling, please inspect the tightening of the setscrews in the hubs, the alignment and the
distance dimension E and adjust, if necessary, and also inspect all screw connections for the tightening torques
specified, dependent on the type of coupling.
If used in hazardous locations the setscrews to fasten the hubs as well as all screw
connections must be secured against working loose additionally, e. g. conglutinating with
Loctite (average strength).
Finally the coupling protection against accidental contact must be fitted.
The cover must be electrically conductive and included in the equipotential bonding. Bellhousings (magnesium
share below 7.5 %) made of aluminium and damping rings (NBR) can be used as connecting element between
pump and electric motor. The cover may only be taken off with standstill of the unit.
During operation of the coupling, please pay attention to
 different operating noise
 vibrations occurring.
If the couplings are used in locations subject to dust explosion and in mining the user must
make sure that there is no accumulation of dust in a dangerous volume between the cover
and the coupling. The coupling must not operate in an accumulation of dust.
For covers with unlocked openings on the top face no light metals must be used if the
couplings are applied as equipment of equipment group ll (if possible, from stainless steel).
If the couplings are used in mining (equipment group l M2), the cover must not be made of
light metal. In addition, it must be resistant to higher mechanical loads than if it is used as
equipment of equipment group ll.
The minimum distance „Sr“ between the protective device and the rotating parts must at least correspond to the
figures specified below.
If the protective device is used as cover, regular openings can be arranged from the point of view explosion
protection that must not exceed the following dimensions:
Openings
Circular - max. diameter
Rectangular - max. lateral length
Straight or curved slot - max. lateral
length/height
!
Top side
4
4
Cover [mm]
Lateral components
8
8
Distance „Sr“
 10
 10
not permissible
8
 20
If you note any irregularities with the coupling during operation, the drive unit must be
switched off immediately. The cause of the breakdown must be specified by means of the
table „Breakdowns“ and, if possible, be eliminated according to the proposals. The potential
breakdowns mentioned can be hints only. To find out the cause all operating factors and
machine components must be considered.
Coating of coupling:
If coated (priming, paintings, etc.) couplings are used in hazardous locations, the
requirements on conductibility and coating thickness must be considered. In case of
paintings up to 200 µm electrostatic load does not have to be expected. Multiple coatings
exceeding 200 µm are prohibited for explosion group llC.
Please observe protection
note ISO 16016.
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Breakdowns, causes and elimination
®
The below-mentioned failures can lead to a use of the ROTEX coupling other than intended. In addition to the
specifications given in these operating and assembly instructions please make sure to avoid such failures.
The errors listed can only be clues to search for the failures. When searching for the failure the adjacent
components must generally be considered.
If used other than intended the coupling can become a source of ignition.
EU directive 2014/34/EU requires special care by the manufacturer and the user.
General failures with use other than intended:
 Important data for the coupling selection were not forwarded.
 The calculation of the shaft-hub-connection was not considered.
 Coupling components with damage occurred during transport are assembled.
 If the heated hubs are assembled, the permissible temperature is exceeded.
 The clearance of the components to be assembled is not coordinated with one another.
 Tightening torques have been fallen below/exceeded.
 Components are mixed up by mistake/assembled incorrectly.
 A wrong or no spider is inserted in the coupling.
 No original KTR components (purchased parts) are used.
 Old/already worn out spiders or spiders stored for too long are used.

: The coupling used/the coupling protection used is not suitable for the operation in hazardous locations
and does not correspond to EU directive 2014/34/EU, respectively.
 Maintenance intervals are not observed.
Breakdowns
Causes
Misalignment
Different operating
noise and/or
vibrations occuring
Screws for axial
fastening of hubs
working loose
Breaking of the cams
due to high impact
energy/overload
Breaking of cams
Operating parameters
do not meet with the
performance of the
coupling
Operating error of the
unit
Please observe protection
note ISO 16016.
Drawn:
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Hazard notes for
hazardous locations
Elimination
1) Set the unit out of operation
2) Eliminate the reason for the misalignment
Increased temperature on
(e. g. loose foundation bolts, breaking of the
the spider surface; ignition
engine mount, heat expansion of unit
risk by hot surfaces
components, modification of the installation
dimension E of the coupling)
3) For inspection of wear see item inspection
1) Set the unit out of operation
2) Inspect alignment of coupling
Ignition risk due to hot
3) Tighten the screws to fasten the hubs and
surfaces and sparking
secure against working loose
4) For inspection of wear see item inspection
1) Set the unit out of operation
Danger by rotating cam 2) Replace complete coupling
fragments
3) Inspect alignment
4) Find out the reason for overload
1) Set the unit out of operation
2) Review the operating parameters and select
Danger by rotating cam
a bigger coupling (consider mounting space)
fragments
3) Assemble new coupling size
4) Inspect alignment
1) Set the unit out of operation
Danger by rotating cam 2) Replace complete coupling
fragments
3) Inspect alignment
4) Instruct and train the service staff
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Breakdowns, causes and elimination
Breakdowns
Early wear of spider
Early wear of spider
(liquefaction of
material inside the
spider cam)
Causes
Hazard notes for
hazardous locations
Elimination
1) Set the unit out of operation
2) Eliminate the reason for the misalignment
Increased temperature on
(e. g. loose foundation bolts, breaking of the
Misalignment
the spider surface; ignition
engine mount, heat expansion of unit
risk by hot surfaces
components, modification of the installation
dimension E of the coupling)
3) For inspection of wear see item inspection
1) Set the unit out of operation
e. g. contact with
2) Disassemble the coupling and remove
aggressive liquids/oils,
remainders of the spider
ozone influence, too
3) Inspect coupling components and replace
high/low ambient
Danger by rotating cam
coupling components that are damaged
temperatures etc.
fragments
4) Insert spider, assemble coupling
causing physical
components
modification of the
5) Inspect alignment, adjust if necessary
spider
6) Make sure that further physical
modifications of the spider are excluded
1) Set the unit out of operation
2) Disassemble the coupling and remove
Ambient/contact
remainders of the spider
temperatures which
3) Inspect coupling components and replace
are too high for the
coupling components that are damaged
spider, max.
Danger by rotating cam
4) Insert spider, assemble coupling
permissible e. g. with
fragments
components
®
T-PUR
5) Inspect alignment, adjust if necessary
T4 = - 50 °C/
6) Inspect and adjust ambient/contact
+ 120 °C
temperature (possibly corrective by using
different spider materials)
1) Set the unit out of operation
2) Disassemble the coupling and remove
remainders of the spider
3) Inspect coupling components and replace
coupling components that are damaged
Danger by rotating cam
Vibrations of drive
4) Insert spider, assemble coupling
fragments
components
5) Inspect alignment, adjust if necessary
6) Find out the reason for the vibrations
(possibly corrective by spider with lower or
higher shore hardness)
If you operate with a worn spider (see item 10.3) and with subsequent contact of metal parts
a proper operation meeting the explosion protection requirements and acc. to directive
2014/34/EU is not ensured.
7
Disposal
In respect of environmental protection we would ask you to dispose of the packaging or products on termination of
their service life in accordance with the legal regulations and standards that apply, respectively.
 Metal
Any metal components have to be cleaned and disposed of by scrap metal.
 Nylon materials
Nylon materials have to be collected and disposed of by a waste disposal company.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
8
KTR-N
Sheet:
Edition:
40228 EN
22 of 27
4
Maintenance and service
Maintenance of the coupling is not imperatively necessary as per EU directive 2014/34/EU. Anyway, it has to be
assured that there is no danger of explosion caused by a coupling failure with standstill of the drive.
We recommend to perform a visual inspection on the coupling at least once a year.
 Since the flexible machine bearings of the driving and driven side settle during the course of load, please
inspect the alignment of the coupling and re-align the coupling, if necessary.
 The coupling parts have to be inspected for damages.
 The screw connections have to be inspected visually.
Having started up the coupling the tightening torques of the screws have to be inspected
during the usual inspection intervals.
!
With the use in hazardous locations please observe chapter 10.2 Inspection intervals for
couplings in
- hazardous locations.
9
Spares inventory, customer service addresses
A basic requirement to ensure the operational readiness of the coupling is a stock of the most important spare
parts on site.
Contact addresses of the KTR partners for spare parts and orders can be obtained from the KTR homepage at
www.ktr.com.

KTR does not assume any liability or warranty for the use of spare parts and accessories
which are not provided by KTR and for the damages which may incur as a result.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
KTR-N
Sheet:
Edition:
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
10
40228 EN
23 of 27
4
Enclosure A
Advice and instructions regarding the use in
Type
GN/EN/GND
(080/081/082)
ZS-DKM-C/E4-DKM
(085/086)
hazardous locations
Hub design
SP
1.0, 1.1, 1b, 1c, 5c
"Non Sparking"
SP
5bc, DKM spacer, 6c, 7.5, 7.6
"Non Sparking"
Sizes
Material
Cast iron (GJL)
Steel
®
ROTEX type E4-DKM (No. 086) only with spacer made of steel or aluminium wrought products with a yield
2
strength Rp0.2 ≥ 250 N/mm .
10.1 Intended use in
hazardous locations
Conditions of operation in
hazardous locations
®
ROTEX SP couplings are suitable for the use according to EU directive 2014/34/EU.
1. Industry (with the exception of mining)




Equipment group II of category 2 and 3 (coupling is not approved for equipment group 1)
Media class G (gases, fogs, steams), zone 1 and 2 (coupling is not approved for zone 0)
Media class D (dusts), zone 21 and 22 (coupling is not approved for zone 20)
Explosion group IIC (explosion class IIA and IIB are included in IIC)
Temperature class:
®
Temperature
class
T3, T2, T1
T4
T5
T6
T-PUR
Ambient or
operating
temperature Ta
- 50 °C to
1)
+ 120 °C
- 50 °C to
+ 115 °C
- 50 °C to
+ 80 °C
- 50 °C to
+ 65 °C
Max. surface
temperature
+ 140 °C
2)
+ 135 °C
+ 100 °C
98 ShA-GS (PUR)
Ambient or
Temperature
operating
class
temperature Ta
- 30 °C to
T4, T3, T2, T1
1)
+ 90 °C
- 30 °C to
T5
+ 80 °C
- 30 °C to
T6
+ 65 °C
3)
Max. surface
temperature
+ 110 °C
2)
+ 100 °C
+ 85 °C
+ 85 °C
Explanation:
The maximum surface temperatures each result from the maximum permissible ambient or operating temperature T a plus the maximum
temperature increase T of 20 K which has to be taken into account.
1) The ambient or operating temperature Ta is limited to + 90 °C (valid for T-PUR® only: + 120 °C) due to the permissible permanent
operating temperature of the elastomers used.
2) The maximum surface temperature of + 110 °C (valid for T-PUR® only: + 140 °C) applies for the use in locations which are potentially
subject to dust explosion, too.
3) Max. short-term spider temperature - 40 °C to + 120 °C
If the operating temperature is modified ít is absolutely necessary to review the coupling selection (see catalogue drive technology
"ROTEX® GS").
2. Mining
Equipment group I of category M2 (coupling is not approved for equipment group M1).
®
Permissible ambient temperature - 30 °C to + 90 °C (valid for T-PUR only: - 50 °C to + 120 °C).
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
10
KTR-N
Sheet:
Edition:
40228 EN
24 of 27
4
Enclosure A
Advice and instructions regarding the use in
10.2 Inspection intervals for couplings in
hazardous locations
Explosion group
3G
3D
II 2GD c IIB
T4, T5, T6
II 2GD c IIC
T4, T5, T6
hazardous locations
Inspection intervals
For couplings which are classified in category 3G or 3D the operating and assembly instructions that
are usual for standard operation apply. During the standard operation which has to be subject to the
ignition risk analysis the couplings are free from any ignition source. Merely the temperature increase
produced by self-heating and depending on the coupling type has to be considered:
®
for ROTEX : T = 20 K
The torsional backlash of the coupling (see chapter 10.3) according to directive 2014/34/EU only has
to be inspected if a failure of the coupling and consequently a standstill of the drive causes danger of
explosion.
We recommend a preventive inspection of torsional backlash and a visual inspection of the flexible
spiders. This should be performed after 3000 operating hours for the first time, at the latest after 6
months after start-up of the coupling.
If you note insignificant or no wear on the spider upon this initial inspection, further inspections can
each be performed after 6000 operating hours or at the latest after 18 months, provided that the
operating parameters remain the same.
If you note significant wear during the initial inspection so that it would be recommendable to replace
the spider, please find out the cause according to the table „Breakdowns“, if possible.
The maintenance intervals must be adjusted to the modified operating parameters without fail.
The torsional backlash of the coupling (see chapter 10.3) according to directive 2014/34/EU only has
to be inspected if a failure of the coupling and consequently a standstill of the drive causes danger of
explosion.
We recommend a preventive inspection of torsional backlash and a visual inspection of the flexible
spiders. This should be performed after 2000 operating hours for the first time, at the latest after 3
months after start-up of the coupling.
If you note insignificant or no wear on the spider upon this initial inspection, further inspections can
each be performed after 4000 operating hours or at the latest after 12 months, provided that the
operating parameters remain the same.
If you note significant wear during the initial inspection so that it would be recommendable to replace
the spider, please find out the cause according to the table „Breakdowns“, if possible.
The maintenance intervals must be adjusted to the modified operating parameters without fail.
Hubs type 7.5 (without feather keyway) may be used in category 3 only.
®
ROTEX SP coupling
Illustration 26: ROTEX® SP coupling
Illustration 27: ROTEX® spider
Here the backlash between the cams of the coupling and the flexible spider must be inspected by means of a
feeler gauge.
When reaching the wear limit maximum friction, the spider must be replaced immediately, irrespective of the
inspection intervals.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
10
KTR-N
Sheet:
Edition:
40228 EN
25 of 27
4
Enclosure A
Advice and instructions regarding the use in
hazardous locations
10.3 Standard values of wear
In case of a backlash > X mm, the flexible spider must be replaced.
Reaching the limits for replacing depends on the operating conditions and the existing operating parameters.
!
In order to ensure a long service life of the coupling and avoid dangers with the use in
hazardous locations, the shaft ends must be accurately aligned.
Please absolutely observe the displacement figures indicated (see table 11 to 13). If the
figures are exceeded, the coupling will be damaged.
Illustration 28: Inspection of the limit of wear
Illustration 29: Wear of spider
Table 7:
Limits of wear (friction)
Xmax. [mm]
®
®
ROTEX spider
ROTEX GS spider
3.00
1.00
3.00
1.40
3.00
1.70
4.00
2.00
4.00
2.25
5.00
2.50
5.00
2.75
Size
24
28
38
42
48
55
65
10.4 Permissible coupling materials in
hazardous locations
In the explosion groups IIA, IIB and IIC the following materials may be combined:
EN-GJL-250
(GG 25)
EN-GJS-400-15
(GGG 40)
Steel
Stainless steel
Semi-finished products of aluminium with a magnesium share of up to 7.5°% and a yield point of
2
Rp0.2 ≥ 250 N/mm are permitted for the use in hazardous locations.
Aluminium diecast is generally excluded for hazardous locations.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
10
KTR-N
Sheet:
Edition:
40228 EN
26 of 27
4
Enclosure A
Advice and instructions regarding the use in
10.5
hazardous locations
marking of coupling for hazardous locations
Couplings for the use in hazardous locations are marked on at least one component completely and on the
remaining components by an
label on the outside diameter of the hub or on the front side each for the
operating conditions permitted. The flexible spider is excluded.
Short labelling:
(standard)
II 2GD c IIC T X
Valid for all types except for ZS-DKM-C:
II 2G c IIC T6, T5, T4 resp. T3 - 50 °C  Ta  + 65 °C, + 80 °C,
+ 115 °C resp. + 120 °C
II 2D c T 140 °C - 50 °C  Ta  + 120 °C
Complete labelling:
®
(valid for T-PUR only)
Valid for type ZS-DKM-C only:
II 2G c IIC T6, T5 resp. T4 - 30 °C  Ta  + 65 °C, + 80 °C resp.
+ 90 °C
II 2D c T 110 °C - 30 °C  Ta  + 90 °C
Complete labelling:
(valid for PUR only)
The labelling with explosion group llC includes the explosion groups llA and llB.
If the symbol
KTR.
was stamped in addition to
Please observe protection
note ISO 16016.
Drawn:
Verified:
, the coupling component was supplied unbored or pilot bored by
2016-04-20 Pz/Zee
2016-04-20 Pz
Replacing:
Replaced by:
KTR-N dated 2015-05-18
ROTEX® SP "Non Sparking"
Operating/Assembly instructions
10
KTR-N
Sheet:
Edition:
40228 EN
27 of 27
4
Enclosure A
Advice and instructions regarding the use in
hazardous locations
10.6 EU Certificate of conformity
EU Certificate of conformity
corresponding to EU directive 2014/34/EU dated 26 February 2014
and to the legal regulations
The manufacturer - KTR Kupplungstechnik GmbH, D-48432 Rheine - states that the
flexible ROTEX® SP "Non Sparking" couplings
in an explosion-proof design described in these operating/assembly instructions are devices
corresponding to article 2, 1. of directive 2014/34/EU and comply with the general safety and health
requirements according to enclosure II of directive 2014/34/EU.
The coupling described in here complies with the specifications of the following standards/guidelines:
DIN EN 1127-1
DIN EN 1127-2
DIN EN 13463-1
DIN EN 13463-5
CLC/TR 50404
®
The ROTEX is in accordance with the specifications of directive 2014/34/EU. One or several
directives mentioned in the corresponding type examination certificate IBExU13ATEXB016 X were in
part replaced by updated versions.
KTR Kupplungstechnik GmbH being the manufacturer confirms that the product mentioned above is in
accordance with the specifications of the new directives, too.
According to article 13 (1) b) ii) of directive 2014/34/EU the technical documentation is deposited with
the institution:
IBExU
Institut für Sicherheitstechnik GmbH
Fuchsmühlenweg 7
09599 Freiberg
Rheine,
Place
2016-04-20
Date
Please observe protection
note ISO 16016.
Drawn:
Verified:
i. V.
Reinhard Wibbeling
Engineering/R&D
2016-04-20 Pz/Zee
2016-04-20 Pz
i. V.
Michael Brüning
Product Manager
Replacing:
Replaced by:
KTR-N dated 2015-05-18