KTR-Group RADEX-N Manual

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
1 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
RADEX®-N
Steel lamina couplings types
NN, NANA 1 to 4,
NENA 1 and 2, NENE 1,
NNZ, NNW
according to directive 2014/34/EU
RADEX®-N type NN
RADEX®-N type NANA 1
RADEX®-N type NNZ
RADEX®-N type NANA 4
RADEX®-N type NNW

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
2 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
RADEX®-N is a torsionally stiff flexible steel lamina coupling. It is able to compensate for shaft
misalignment, for example caused by thermal expansion, etc.
1Technical data 3
2Advice 7
2.1 General advice 7
2.2 Safety and advice symbols 8
2.3 General hazard warnings 8
2.4 Intended use 8
2.5 Coupling selection 9
2.6 Reference to EC Machinery Directive 2006/42/EC 9
3Storage, transport and packaging 9
3.1 Storage 9
3.2 Transport and packaging 9
4Assembly 10
4.1 Components of the coupling 10
4.2 Advice for finish bore 13
4.3 Assembly/disassembly of flange hubs 14
4.4 Assembly/disassembly of clamping ring hubs 15
4.5 General advice for assembly of spacer 17
4.6 Vertical assembly/disassembly 18
4.7 Assembly/disassembly of the lamina sets, RADEX®-N size 20 - 135 19
4.8 Assembly/disassembly of the lamina sets, RADEX®-N size 136 - 336 and 138 - 338 20
4.9 Tightening torques of screw connections on the lamina set 22
4.10 Displacements - alignment of the coupling 22
5Start-up 24
6Breakdowns, causes and elimination 25
7Environment and disposal 26
7.1 Environment 26
7.2 Disposal 26
8Maintenance and service 27
9Spares inventory, customer service addresses 27
10 Enclosure A
Advice and instructions regarding the use in potentially explosive atmospheres 28
10.1 Intended use in potentially explosive atmospheres 28
10.2 Inspection intervals for couplings in potentially explosive atmospheres 29
10.3 marking of coupling for potentially explosive atmospheres 30
10.4 EU Certificate of conformity 31
Table of contents

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
3 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Illustration 1: RADEX®-N type NN
Illustration 2: RADEX®-N type NANA 1
Illustration 3: RADEX®-N type NANA 2
Illustration 4: RADEX®-N type NENA 1
Illustration 5: RADEX®-N type NENE 1
Illustration 6: RADEX®-N type NENA 2
Dimensions of couplings see table 1, sheet 4.
1 Technical data

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
4 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Table 1: Types NN - NANA 1 - NANA 2 - NENA 1 - NENE 1 - NENA 2
Size
Max. finish
bore [mm]
Dimensions [mm]
General
d1, d2
d3, d4
D
D1
DA
l1, l2
LG1
E1
LG2
E2
LG3
E3
LG4
E4
LG5
E5
LG6
E6
20
20
-
32
-
56
20
45
5
100
60
-
-
-
-
-
-
-
-
25
25
-
40
-
68
25
56
6
110
60
-
-
-
-
-
-
-
-
35
38
-
54
-
82
40
86
6
150
70
-
-
-
-
-
-
-
-
38
42
-
58
-
94
45
98
8
170
80
-
-
-
-
-
-
-
-
42
50
-
68
-
104
45
100
10
170
80
-
-
-
-
-
-
-
-
50
55
-
78
-
126
55
121
11
206
96
-
-
-
-
-
-
-
-
60
65
55
88
77
138
55
121
11
206
96
170
60
160
50
114
4
124
14
70
75
65
102
90
156
65
141
11
246
116
200
70
190
60
134
4
144
14
80
85
75
117
104
179
75
164
14
286
136
233
83
220
70
154
4
167
17
85
90
80
123
112
191
80
175
15
300
140
246
86
232
72
164
4
178
18
90
100
85
132
119
210
80
175
15
300
140
251
91
233
73
166
6
184
24
105
110
90
147
128
225
90
200
20
340
160
281
101
263
83
186
6
204
24
115
120
100
163
145
265
100
223
23
370
170
309
109
288
88
206
6
227
27
135
135
115
184
160
305
135
297
27
520
250
-
-
-
-
-
-
-
-
136
135
-
180
-
300
135
293
23
According to customer specification
156
150
-
195
-
325
150
327
27
166
170
-
225
-
350
165
361
31
186
190
-
250
-
380
185
401
31
206
210
-
275
-
420
200
437
37
246
245
-
320
-
500
240
524
44
286
290
-
383
-
567
280
612
52
336
340
-
445
-
660
330
718
58
138
135
-
180
-
300
135
293
23
158
150
-
195
-
325
150
327
27
168
170
-
225
-
350
165
361
31
188
190
-
250
-
380
185
401
31
208
210
-
275
-
420
200
437
37
248
245
-
320
-
500
240
524
44
288
290
-
383
-
567
280
612
52
338
340
-
445
-
660
330
718
58
For dimensions for the setscrews (dimension G and t) see table 4.
!
In case if a dimensional drawing was created for the coupling, the dimensions specified
have to be primarily observed.
The operator of the machine should be provided with the dimensional drawing.
1 Technical data

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
5 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Illustration 7: RADEX®-N type NNZ
Illustration 8: RADEX®-N type NANA 3
Illustration 9: RADEX®-N type NANA 4
Illustration 10: RADEX®-N type NNW
Dimensions of couplings see table 2, sheet 6.
1 Technical data

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
6 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Table 2: Types NNZ - NANA 3 - NANA 4 - NNW
Size
Max. finish bore
[mm]
d1, d2
Dimensions [mm]
General
D
DA
l1, l2
LG7
E7
LG8
E8
LG9
E9
s
20
20
32
56
20
LG7 = E7+ l1+ l2
Intermediate shaft dimension according to customer specification
LG8 = E8+ l1+ l2
Intermediate shaft dimension according to customer specification
58
18
8
25
25
40
68
25
70
20
8
35
38
54
82
40
102
22
10
38
42
58
94
45
118
28
12
42
50
68
104
45
124
34
14
50
55
78
126
55
144
34
12
60
65
88
138
55
144
34
12
70
75
102
156
65
166
36
14
80
85
117
179
75
-
-
-
85
90
123
191
80
-
-
-
90
100
132
210
80
-
-
-
105
110
147
225
90
-
-
-
115
120
163
265
100
-
-
-
135
135
184
305
135
-
-
-
136
135
180
300
135
-
-
-
156
150
195
325
150
-
-
-
166
170
225
350
165
-
-
-
186
190
250
380
185
-
-
-
206
210
275
420
200
-
-
-
246
245
320
500
240
-
-
-
286
290
383
567
280
-
-
-
336
340
445
660
330
-
-
-
138
135
180
300
135
-
-
-
158
150
195
325
150
-
-
-
168
170
225
350
165
-
-
-
188
190
250
380
185
-
-
-
208
210
275
420
200
-
-
-
248
245
320
500
240
-
-
-
288
290
383
567
280
-
-
-
338
340
445
660
330
-
-
-
Further dimensions of type NANA 3 (LGN and EN) see table 3.
For dimensions for the setscrews (dimension G and t) see table 4.
Table 3: Further dimensions of type NANA 3
Size
42
50
60
70
80
LGN
190
230
210
250
290
210
250
290
230
270
310
250
290
330
400
EN
100
140
100
140
180
100
140
180
100
140
180
100
140
180
250
Size
85
90
105
115
135
LGN
260
300
340
410
300
340
410
320
360
430
380
450
520
EN
100
140
180
250
140
180
250
140
180
250
180
250
250
Size
136
156
166
186
208
246
286
336
138
158
168
188
208
248
288
338
LGN
As specified by the customer
EN
!
In case if a dimensional drawing was created for the coupling, the dimensions specified
have to be primarily observed.
The operator of the machine should be provided with the dimensional drawing.
1 Technical data

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
7 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Table 4: Dimensions setscrews
Size
20
25
35
38
42
50
60
70
80
85
90
105
115
G
M5
M5
M6
M6
M8
M8
M8
M10
M10
M10
M12
M12
M12
t
6
8
15
15
20
20
20
20
20
25
25
30
30
Number z
1
1
1
1
1
1
1
1
1
1
1
1
1
Size
135
136
156
166
186
206
246
286
336
138
158
168
188
208
248
288
338
G
M20
M12
M12
M16
M16
M16
M20
M20
M24
M12
M12
M16
M16
M16
M20
M20
M24
t
As specified by the customer
Number z
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Table 5: Torque and speed
Size
20
25
35
38
42
50
60
70
80
85
Torque [Nm]
TKN
30
60
120
240
320
470
900
1300
1800
2600
TK max
60
120
240
480
640
940
1800
2600
3600
5200
TKW
15
30
60
120
160
235
450
650
900
1300
Max. speed n [rpm]
20400
16800
13900
12000
11000
9000
8200
7300
6300
5900
Size
90
105
115
135
136
156
166
186
206
246
Torque [Nm]
TKN
4600
5600
9900
13500
17500
25000
35000
42000
52500
90000
TK max
9200
11200
19800
27000
35000
50000
70000
84000
105000
180000
TKW
2300
2800
4950
6750
8750
12500
17500
21000
26250
45000
Max. speed n [rpm]
5400
5000
4300
3700
3800
3500
3300
3000
2800
2300
Size
286
336
138
158
168
188
208
248
288
338
Torque [Nm]
TKN
150000
210000
23000
33000
45000
56000
70000
120000
200000
280000
TK max
300000
420000
46000
66000
90000
112000
140000
240000
400000
560000
TKW
75000
105000
11500
16500
22500
28000
35000
60000
100000
140000
Max. speed n [rpm]
2000
1800
3800
3500
3300
3000
2800
2300
2000
1800
RADEX®-N couplings with attachments that can generate heat, sparks and static charging
(e. g. combinations with brake drums, brake disks, overload systems such as torque
limiters, fan impellers etc.) are not permitted for the use in potentially explosive
atmospheres.
A separate analysis must be performed.
Please read through these operating/assembly instructions carefully before you start up the coupling.
Please pay special attention to the safety instructions!
The RADEX®-N coupling is suitable and approved for the use in hazardous locations. When using
the coupling in potentially explosive atmospheres, 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.
1 Technical data
2 Advice
2.1 General advice

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
8 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
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.
STOP
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.
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 operating 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.
You may only assemble, operate and maintain the coupling if you
•have carefully read through the operating/assembly instructions and understood them
•are technically qualified and specifically trained (e. g. safety, environment, logistics)
•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 RADEX®-N described in here corresponds to the technical status at the time of printing of these
operating/assembly instructions.
2 Advice
2.2 Safety and advice symbols
2.3 General hazard warnings
2.4 Intended use

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
9 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
!
For a permanent 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 "RADEX®-N").
Please observe the critical whirling speed with types NANA 4 and NNW.
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 lamina set 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.
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 refer to the present
operating/assembly instructions considering the warnings.
The couplings are supplied in preserved condition and can be stored at a dry and covered place for 6 - 9 months.
!
Humid storage rooms are not suitable.
Please make sure that condensation is not generated. The best relative air humidity is less
than 65 %.
!
In order to avoid any injuries and any kind of damage 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.
2 Advice
2.5 Coupling selection
2.6 Reference to EC Machinery Directive 2006/42/EC
3 Storage, transport and packaging
3.1 Storage
3.2 Transport and packaging

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
10 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
The coupling is generally supplied in individual parts. Before assembly the coupling has to be inspected for
completeness.
Components of RADEX®-N type NN
Component
Number
Description
Component
Number
Description
1
2
Flange hub 1)
5
see table 6
Spacer sleeve
2
1
Lamina set
6
see table 6
Washer
3
-
Spacer
7
see table 6
Hexagon nut/clamping nut
4
see table 6
Dowel screw
8
2
Setscrew DIN EN ISO 4029
1) Design as clamping ring hub (frictionally engaged shaft-hub-connection) on request
Illustration 11: RADEX®-N type NN
Components of RADEX®-N type NANA 1 to 3 - NENA 1 and 2 - NENE 1
Component
Number
Description
Component
Number
Description
1
2
Flange hub 1)
5
see table 6
Spacer sleeve
2
2
Lamina set
6
see table 6
Washer
3
1
Spacer
7
see table 6
Hexagon nut/clamping nut
4
see table 6
Dowel screw
8
2
Setscrew DIN EN ISO 4029
1) Design as clamping ring hub (frictionally engaged shaft-hub-connection) on request
Illustration 12: RADEX®-N type NANA 1 (example)
4 Assembly
4.1 Components of the coupling

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
11 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Components of RADEX®-N type NNZ
Component
Number
Description
Component
Number
Description
1
2
Flange hub 1)
5
see table 6
Spacer sleeve
2
2
Lamina set
6
see table 6
Washer
3
1
Spacer
7
see table 6
Hexagon nut/clamping nut
4
see table 6
Dowel screw
8
2
Setscrew DIN EN ISO 4029
1) Design as clamping ring hub (frictionally engaged shaft-hub-connection) on request
Illustration 13: RADEX®-N type NNZ
Components of RADEX®-N type NANA 4
Component
Number
Description
Component
Number
Description
1
2
Flange hub 1)
5
see table 6
Spacer sleeve
2
2
Lamina set
6
see table 6
Washer
3
1
Intermediate pipe with 2
flange hubs spec. - welded
7
see table 6
Hexagon nut/clamping nut
8
2
Setscrew DIN EN ISO 4029
4
see table 6
Dowel screw
1) Design as clamping ring hub (frictionally engaged shaft-hub-connection) on request
Illustration 14: RADEX®-N type NANA 4
4 Assembly
4.1 Components of the coupling

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
12 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Components of RADEX®-N type NNW
Component
Number
Description
Component
Number
Description
1
4
Flange hub 1)
5
see table 6
Spacer sleeve
2
2
Lamina set
6
see table 6
Washer
3
1
Intermediate shaft with 2
feather keys
7
see table 6
Hexagon nut/clamping nut
8
2
Setscrew DIN EN ISO 4029
4
see table 6
Dowel screw
1) Design as clamping ring hub (frictionally engaged shaft-hub-connection) on request
Illustration 15: RADEX®-N type NNW
Table 6: Number of single parts
Size
20
25
35
38
42
50
60
70
80
85
Fit bolt (item 4) 1)
4
4
4
4
4
4
6
6
6
6
Distance sleeve (item 5) 1)
4
4
4
4
4
4
6
6
-
-
Washer (item 6) 1) 2)
-
-
-
-
-
-
-
-
6
6
Hexagon nut/Clamping nut (item 7) 1)
4
4
4
4
4
4
6
6
6
6
Size
90
105
115
135
136
156
166
186
206
246
Fit bolt (item 4) 1)
6
6
6
6
6
6
6
6
6
6
Distance sleeve (item 5) 1)
-
-
-
-
-
-
-
-
-
-
Washer (item 6) 1) 2)
6
6
6
6
-
6
-
-
-
-
Hexagon nut/Clamping nut (item 7) 1)
6
6
6
6
6
6
6
6
6
6
Size
286
336
138
158
168
188
208
248
288
338
Fit bolt (item 4) 1)
6
6
8
8
8
8
8
8
8
8
Distance sleeve (item 5) 1)
-
-
-
-
-
-
-
-
-
-
Washer (item 6) 1) 2)
-
-
-
8
-
-
-
-
-
-
Hexagon nut/Clamping nut (item 7) 1)
6
6
8
8
8
8
8
8
8
8
1) Number each lamina set
2) With size 156 and 158 washer below the screw head
4 Assembly
4.1 Components of the coupling

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
13 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
STOP
The maximum permissible bore diameters d (see
chapter 1 - technical data) must not be exceeded.
If these figures are disregarded, the coupling may
tear. Rotating particles may cause danger to life.
Illustration 16: Concentricity and axial run-out
•Bores of flange hubs machined by the customer have to observe
concentricity or axial runout, respectively (see illustration 16).
•Please make absolutely sure to observe the figures for Ø dmax.
•Carefully align the flange hubs when the finish bores are drilled.
•Please provide for a setscrew according to DIN EN ISO 4029 with
a cup point or an end plate to fasten the flange hubs axially.
!
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 marked with the symbol
.
Reference to unbored resp. pilot bored coupling components with explosion protection
marking:
Basically the company KTR supplies couplings resp. coupling hubs with explosion protection
marking as an unbored or pilot bored type only on explicit request of the customer. The prerequisite
is a declaration of exemption submitted by the customer assuming any responsibility and liability for
remachining performed properly.
Table 7: Setscrew DIN EN ISO 4029
Size
20
25
35
38
42
50
60
70
80
85
90
105
115
G
M5
M5
M6
M6
M8
M8
M8
M10
M10
M10
M12
M12
M12
t
6
8
15
15
20
20
20
20
20
25
25
30
30
Number z
1
1
1
1
1
1
1
1
1
1
1
1
1
Tightening torque TA
[Nm]
2
2
4.8
4.8
10
10
10
17
17
17
40
40
40
Size
135
136
156
166
186
206
246
286
336
138
158
168
188
208
248
288
338
G
M20
M12
M12
M16
M16
M16
M20
M20
M24
M12
M12
M16
M16
M16
M20
M20
M24
t
As specified by the customer
Number z
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Tightening torque TA
[Nm]
140
40
40
80
80
80
140
140
240
40
40
80
80
80
140
140
240
4 Assembly
4.2 Advice for finish bore

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
14 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:

We recommend to inspect bores, shaft, keyway and feather key for dimensional accuracy
before assembly.
Heating the flange hubs lightly (approx. 80 °C) allows for an easier mounting onto the
shafts.
Please pay attention to the ignition risk in potentially explosive atmospheres!
STOP
Touching the heated hubs causes burns.
Please wear safety gloves.
!
With the assembly please make sure that the distance dimension E (see table 1 and 2) is
observed so that the coupling components are not in contact with each other during the
operation.
Disregarding this advice may cause damage to the coupling.
If used in potentially explosive atmospheres 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).
For axial alignment of the coupling the distance dimension E (see table 1 and 2) is decisive. In order to adjust the
right dimension E you should proceed as follows:
•Mount the flange hubs on the shaft of driving and driven side (see illustration 17).
•The internal sides of the flange hubs must be flush with the front sides of the shafts (see illustration 17).
•Shift the power packs in axial direction until the distance dimension E is achieved (see table 1 or 2).
•Fasten the flange hubs by tightening the setscrews DIN EN ISO 4029 with a cup point (tightening torque see
table 7).
Illustration 17: Assembly of flange hubs
Disassembly:
STOP
Driving components falling down may cause injury to persons or damage on the machine.
Secure the driving components before disassembly.
•Release the setscrew in the hub and unscrew it by 2 - 3 pitches.
•Pull the hub from the shaft.
4 Assembly
4.3 Assembly/disassembly of flange hubs

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
15 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
!
The stiffness and dimensions of the shafts (here specifically hollow shafts) have to be
selected in a way that sufficient safety against plastic deformation is provided for (if
necessary, consult with company KTR).

We recommend to inspect bores and shafts for dimensional accuracy before assembly.
!
With the assembly please make sure that the distance dimension E (see table 1 and 2) is
observed so that the coupling components are not in contact with each other during the
operation.
Disregarding this advice may cause damage to the coupling.
If used in potentially explosive atmospheres 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).
For axial alignment of the coupling the distance dimension E (see table 1 and 2) is decisive. In order to set the
right dimension E you should proceed as follows:
•Clean and degrease the hub bores and shafts, afterwards lubricate with a thin-fluid oil (e. g. Castrol 4 in 1 or
Klüber Quietsch-Ex).
!
Oils and greases containing molybdenum disulfide or other high-pressure additives as well
as internal lubricants must not be used.
•Lightly unscrew the clamping screws and pull the clamping ring from the clamping ring hub only marginally to
make sure that the clamping ring is fitted loosely.
•Mount the clamping ring hubs on the shaft of driving and driven side (see illustration 18).
•The internal sides of the clamping ring hubs must be flush with the front sides of the shafts (see illustration 18).
•Shift the power packs in axial direction until the distance dimension E is achieved (see table 1 or 2).
•Tighten the clamping screws evenly crosswise at first to 1/3 and afterwards 2/3 of the full tightening torque
(see table 8). Afterwards tighten the clamping screws crosswise at the full tightening torque. The process
needs to be repeated until the tightening torque has been achieved with all screws.
Illustration 18: Assembly of clamping ring hubs
4 Assembly
4.4 Assembly/disassembly of clamping ring hubs

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
16 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
Table 8: Tightening torques of clamping screws
Size
35
38
42
50
60
70
80
85
90
105
115
135
Clamping screws
M5
M6
M6
M8
M8
M8
M10
M12
M12
M12
M12
M16
Tightening torque TA
[Nm]
8.5
14
14
35
35
35
69
120
120
120
120
295
!
Having started up the coupling the tightening torques of the screws have to be inspected
during the usual inspection intervals.
Disassembly:
STOP
Driving components falling down may cause injury to persons or damage on the machine.
Secure the driving components before disassembly.
•Unscrew the clamping screws evenly one after another. During every revolution every screw may only be
unscrewed by half a turn. Unscrew all clamping screws by 3 - 4 pitches.
•Remove the screws located next to the extraction threads and screw them into the respective extraction
threads until they fit.
•The clamping ring is released by tightening the screws in the extraction threads evenly gradually and
crosswise.
Illustration 19: Disassembly of clamping ring hub type 6.0
Illustration 20: Disassembly of clamping ring hub type 6.5
•In case of a repeated assembly the hub bore and shaft have to be cleaned and afterwards lubricated with a
thin-bodied oil (e. g. Castrol 4 in 1 or Klüber Quietsch-Ex). The same applies for the taper surfaces of clamping
ring hub and clamping ring.
!
If these hints are not observed, the operation of the clamping ring hub may be affected.
4 Assembly
4.4 Assembly/disassembly of clamping ring hubs

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
17 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
If the coupling is supplied with a transportation lock (optionally), the
following has to be observed:
Illustration 21: Transport lock
!
The spacer sleeves (steel) have to be removed for
further assembly and operation (see illustration
21).
•Disassemble the transportation screws and spacer sleeves.
If the coupling is supplied with limitation for axial clearance
(optionally), the following has to be observed:
•Before mounting the spacer, remove the screws and sleeves for
limitation of axial clearance.
•Having mounted the spacer completely, re-assemble the screws
and sleeves for limitation of axial clearance (see illustration 22).
Please observe the axial clearance S as per dimension sheet.
•Secure the screws against working loose by means of a high-
strength adhesive (e. g. omniFIT 230M or Loctite 2701).
Illustration 22: Limitation of axial clearance
!
Please take into account whether a limitation for axial clearance with two nylon sleeves per
screw or one transportation lock with one steel sleeve per screw was installed (see
illustration 21 and 22).
Marking of balancing (optional)
•With the assembly of the spacer please observe the correct alignment of the marking for balancing. The
marking for balancing X (Y) of the hub, as an example, must be flush with the marking for balancing X (Y) of
the spacer (see illustration 23).
Illustration 23: Alignment of spacer
4 Assembly
4.5 General advice for assembly of spacer

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
18 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
If used in potentially explosive atmospheres 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).
For vertical alignment of the coupling the distance dimension E (see table 1 and 2) is decisive. In order to set the
right dimension E you should proceed as follows:
•Mount the flange hubs on the shaft of driving and driven side. Make sure that the flange hub with the disk for
vertical support is at the bottom (see illustration 24 and 25 as an alternative).
•The internal sides of the flange hub on top or centering surface of the flange hub at the bottom must be flush
with the front sides of the shafts (see illustration 24 and 25 as an alternative).
•Shift the power packs in axial direction until the distance dimension E is achieved (see table 1 or 2).
•Fasten the flange hubs by tightening the setscrews DIN EN ISO 4029 with a cup point (tightening torque see
table 7).

With the assembly of a spacer make sure that the flange hub with the disk for vertical
support is at the bottom.
Illustration 24: Vertical assembly (preferred assembly)
Illustration 25: Vertical assembly (as an alternative)
Disassembly:
STOP
Driving components falling down may cause injury to persons or damage on the machine.
Secure the driving components before disassembly.
•Release the setscrew in the hub and unscrew it by 2 - 3 pitches.
•Pull the hub from the shaft.
4 Assembly
4.6 Vertical assembly/disassembly

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
19 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
!
With the assembly please make sure that the lamina sets are installed free from distortion in
axial direction. Disregarding this advice may cause damage to the coupling.
•Clean and degrease the contact surfaces of screw connections on the flange hub, lamina set and spacer.
•Insert the lamina sets and the spacer (see illustration 26 and 27, respectively). With type NN only 1 lamina set
is used (no spacer).
•Hand-tighten the components for the time being, the fit bolts to be assembled reciprocally (see illustration 26
or 27, respectively).
•Tighten the hexagon nuts one after the other and with several revolutions to the tightening torque specified in
table 11. Secure the dowel screw against twisting.
Lamina set
Illustration 26: Assembly of lamina sets, RADEX®-N size 20 - 70
Lamina set
Illustration 27: Assembly of lamina sets, RADEX®-N size 80 - 135
Table 9:
Size
20
25
35
38
42
50
60
70
80
85
90
105
115
135
Pitch circle Ø D1
44
53
67
75
85
100
112
128
148
158
170
185
214
240
Disassembly:
STOP
Driving components falling down may cause injury to persons or damage on the machine.
Secure the driving components before disassembly.
•Unscrew the hexagon nuts and remove along with the fit bolts and disks.
•Take out the lamina sets.
4 Assembly
4.7 Assembly/disassembly of the lamina sets, RADEX®-N size 20 - 135

RADEX®-N
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
47110 EN
20 of 31
24
Please observe protection
note ISO 16016.
Drawn:
2019-07-23 Pz/Wb
Replacing:
KTR-N dated 2018-07-17
Verified:
2019-07-26 Pz
Replaced by:
!
With the assembly please make sure that the lamina sets are installed free from distortion in
axial direction. Disregarding this advice may cause damage to the coupling.
•Clean and degrease the contact surfaces of screw connections on the flange hub, lamina set and spacer as
well as the threads of the clamping nut and dowel screw.
•Insert the lamina sets and the spacer (see illustration 28). With type NN only 1 lamina set is used (no spacer).
•Hand-tighten the components for the time being, the dowel screws to be assembled reciprocally (see
illustration 28). With size 156 and 158 use a washer under the screw head.
•The pressure screws in the clamping nut must not protude on the pressure side (see illustration 29).
!
All components must be superimposed without any gap.
•Afterwards turn back the clamping nut until there is a gap of 1 - 2 mm (see illustration 29).
•Hand-tighten the pressure screws marked in illustration 31.
•Tighten these screws (see illustration 31) at half the tightening torque according to table 11 and afterwards at
the full tightening torque according to table 11.
•Now tighten all pressure screws one after another and with several revolutions until all screws have achieved
the full tightening torque (see illustration 32).
!
The pressure screws must not bear on the heads after assembly (see illustration 30).
•All clamping nuts have to be mounted as per the aforementioned process.
Lamina set
Illustration 28: Assembly of the lamina sets, RADEX®-N size 136 - 336 and 138 - 338
Illustration 29
Illustration 30
4 Assembly
4.8 Assembly/disassembly of the lamina sets, RADEX®-N size 136 - 336 and 138 - 338