KTR ROTEX GS User manual

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
1of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
ROTEX
®
GS
Torsionally flexible jaw couplings types:
shaft coupling, clamping hubs, clamping ring hubs,clamping ring hubs light,
DKM, Compactand their combinations
according toStandard 94/9/EC (ATEX 95)
for finish bored, pilot bored and unbored couplings
ROTEX
®
GS, shaft coupling ROTEX
®
GS, DKM
ROTEX
®
GS, clamping hubs ROTEX
®
GS, Compact
ROTEX
®
GS, clamping ring hubs
ROTEX
®
GS, clamping ring hubs steel
ROTEX
®
GS, clamping ring hubs light
Expansion hubs and their combinations
for finish bored, pilot bored and unbored couplings
ROTEX
®
GS, expansion hubs

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
2of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
ROTEX
®
GS is a plug-in shaft coupling for measuring technology and automatic control
engineering. It is able to compensate for shaft misalignment produced by, as an example,
inaccuracies in production, thermal expansion, etc.
With the designing of our ROTEX
®
GS coupling, the engineering standards and regulations, in
particular DIN EN 12100, part 2 as well as DIN EN ISO 13849, part 1 and 2 „Safety of
machines” have been taken into account.
Table of Contents
1
Techni
cal Data
2
Hin
ts
2.1 Coupling Selection
2.2 General Hints
2.3 Safety and Advice Hints
2.4 General Hint to Danger
2.5 Proper Use
3
Storage
4
Assembly
4.1 Hub Types
4.2 Coupling Components
4.3 Hints for Assembly
4.4 Hint for Finish Bore
4.5 Assembly of Hubs (Types 1.0, 1.1 and 1.2)
4.6 Assembly of Clamping Hubs
(Types 2.0, 2.1, 2.5, 2.6, 2.8, 2.9, 7.5, 7.6, 7.8 and 7.9)
4.7 Assembly of Clamping Ring Hubs (Types 6.0, 6.0 steel, 6.0 light and 6.5)
4.8 Assembly of Expansion Hubs (Type 9.0)
4.9 Displacements – Alignment of the Couplings
4.10 Spares Inventory, Customer Service Addresses
5
Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.1 Use in Hazardous Areas According to the Regulations
5.2 Control Intervals for Couplings in Hazardous Areas
5.3 Approximate Values of Wear
5.4 Permissible Coupling Materials in the Hazardous Area
5.5 Marking of Coupling for Hazardous Area
5.6 Starting
5.7 Breakdowns, Causes and Elimination
5.8 EC Certificate of Conformity according to the EC Standards 94/9/EC
dated 23.03.1994

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
3of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Standard shaft coupling
Illustration 1: ROTEX
®
GS, size 5 - 38 Illustration 2: ROTEX
®
GS, size 42 - 90
Table 1: Dimensions
Size Dimensions [mm] Setscrew
1)
D D
H
d
H
L l
1
; l
2
M / N E b s a G t
Hub material - Aluminium (Al-H)
5 - 10 - 15 5 - 5 4 0,5 4,0 M2 2,5
7 - 14 - 22 7 - 8 6 1,0 6,0 M3 3,5
9 - 20 7,2 30 10 - 10 8 1,0 1,5 M4 5,0
12 - 25 8,5 34 11 - 12 10 1,0 3,5 M4 5,0
14 - 30 10,5 35 11 - 13 10 1,5 2,0 M4 5,0
19 - 40 18 66 25 - 16 12 2,0 3,0 M5 10
24 - 55 27 78 30 - 18 14 2,0 3,0 M5 10
28 - 65 30 90 35 - 20 15 2,5 4,0 M8 15
38 - 80 38 114 45 - 24 18 3,0 4,0 M8 15
Hub material - Steel (St-H)
42 85 95 46 126 50 28 26 20 3,0 4,0 M8 20
48 95 105 51 140 56 32 28 21 3,5 4,0 M8 20
55 110 120 60 160 65 37 30 22 4,0 4,5 M10 20
65 115 135 68 185 75 47 35 26 4,5 4,5 M10 20
75 135 160 80 210 85 53 40 30 5,0 5,0 M10 25
90 160 200 104 245 100 62 45 34 5,5 6,5 M12 30
1)
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the hubs as well as all screw connections
have to be secured against self-slackening additionally, e. g. by glueing with Loctite (medium-tight).
Table 2: Torques and finish bores
Size Spider (part 2)
1)
Rated torque [Nm] Unbored
Finish bore[mm] –Hub type
d
min.
1.0
d
max.
1.1, 1.2 d
max.
2.0, 2.1 d
max.
80 Sh-A-GS 92 Sh-A-GS 98 Sh-A-GS 64 Sh-D-GS 72 Sh-D-GS
5 0,3 0,5 0,9 0,2
2)
- - 2 - 6 5
7 0,7 1,2 2,0 2,4 - - 3 7 7 7
9 1,8 3,0 5,0 6,0 - - 4 10 11 11
12 3,0 5,0 9,0 12,0 - - 4 12 12 12
14 4,0 7,5 12,5 16,0 - - 5 16 16 16
1.0, 1.1
d
max.
2.5 d
max.
2.6 d
max.
19 4,9 10,0 17,0 21 - x 6 24 24 24
24 - 35 60 75 97
4)
x 8 28 28 28
28 - 95 160 200 260
4)
x 10 38 38 38
38 - 190 325 405 525
4)
x 12 45 45 45
42 - 265 450 560 728
4)
x 14 55 50 45
48 - 310 525 655 852
4)
x 15 62 55 55
55 - 410 685 825 7072
4)
x 20 74 68 68
65 - - 940
3)
1175 1527
4)
x 22 80 70 70
75 - - 1920
3)
2400 - x 30 95 80 80
90 - - 3600
3)
4500 - - 40 110 90 90
1) Maximum torque of coupling T
Kmax.
= Rated torque of coupling T
K Nenn.
x 2
with the exception of clamping hubs types 2.0 and 2.5 (see table 3)
2) Figures for spider 70 Sh-A-GS 3) Figures for spider 95 Sh-A-GS
4) When using the 72 Sh-D spider, we recommend to use hubs in steel.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
4of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Clamping hubs
Illustration 3: ROTEX
®
GS, size 5 – 14(type 2.0) Illustration 4: ROTEX
®
GS, size 19 - 75(type 2.5)
Table 3:Torques and surface pressure of clamping hubs types 2.0 / 2.5
Size 5 7 9 12 14 19 24 28 38 42 48 55 65 75 90
Clamping
screw M
1
M1,2
M2 M2,5 M3 M3 M6 M6 M8 M8 M10 M12 M12 M12 M16 M20
Dimension t
1
2,5 3,5 5,0 5,0 5,0 11,0 10,5 11,5 15,5 18 21 26 33 36 40
Dimension e 3,5 5,0 7,5 9,0 11,5 14,5 20 25 30 32 36 42,5 45 51 60
Dimension ØD
K
11,4 16,5 23,4 27,5 32,2 46 57,5 73 83,5 93,5 105 119,5 124 147,5 192
Tightening
torque T
A
[Nm]
- 0,37 0,76 1,34 1,34 10,5 10,5 25 25 69 120 120 120 295 580
Bore Ø Transmittable torque of Clamping hub [Nm]
Surface pressure [N/mm
2
]
Ø2 -
Ø3 - 0,84
71,02
Ø4 - 0,91
2,07 3,65 4,48
43,02 68,51 109,9 134,9
Ø5 - 0,97
2,18 3,81 4,64
29,50 46,15 73,5 89,5
Ø6 1,04
2,28 3,98 4,81 23,6
21,85 33,65 53,3 64,4 139,3
Ø7 1,10
2,39 4,14 4,97 24,3
17,06 25,90 40,8 48,9 105,2
Ø8 1,17
2,50 4,31 5,14 25,0 32,4
13,83 20,73 32,5 38,7 82,8 131,0
Ø9 2,61
4,48 5,30 25,7 33,1
17,09 26,6 31,6 67,2 105,7
Ø10 2,72
4,64 5,47 26,3 33,8 74,3
14,42 22,4 26,4 55,9 87,3 171,3
Ø11 2,83
4,81 5,64 27,0 34,4 75,5
12,40 19,2 22,5 47,4 73,6 143,9
Ø12 4,97
5,80 27,7 35,1 76,7 89,1
16,7 19,4 40,8 63,1 122,9 105,9
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the hubs as well as all screw
connections have to be secured against self-slackening additionally, e. g. by glueing with Loctite
(medium-tight).

A T T E N T I O N !
Clamping hubs type 2.0 and 2.5 without keyway are not permissible for applications according to
DIN EN ISO 13849, part 2.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
5of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Continuation of table 3: Torques and surface pressure of clamping hubs types 2.0 / 2.5
Size 5 7 9 12 14 19 24 28 38 42 48 55 65 75 90
Clamping
screw M
1
M1,2
M2 M2,5 M3 M3 M6 M6 M8 M8 M10 M12 M12 M12 M16 M20
Dimension t
1
2,5 3,5 5,0 5,0 5,0 11,0 10,5 11,5 15,5 18 21 26 33 36 40
Dimension e 3,5 5,0 7,5 9,0 11,5 14,5 20 25 30 32 36 42,5 45 51 60
Dimension ØD
K
11,4 16,5 23,4 27,5 32,2 46 57,5 73 83,5 93,5 105 119,5 124 147,5 192
Tightening
torque T
A
[Nm]
- 0,37 0,76 1,34 1,34 10,5 10,5 25 25 69 120 120 120 295 580
Bore Ø Transmittable torque of Clamping hub [Nm]
Surface pressure [N/mm
2
]
Ø14 6,13
29,0 36,5 79,2 91,6 216
15,1 31,4 48,1 93,2 80,0 172
Ø15 6,30
29,7 37,1 80,4 92,8 219 352
13,5 28,0 42,7 82,5 70,6 152 225
Ø16 6,46
30,4 37,8 81,7 94,1 221 356
12,2 25,2 38,2 73,6 62,9 135 200
Ø19 32,4
39,8 85,4 97,8 230 369
19,0 28,5 54,6 46,3 99 149
Ø20 33,1
40,5 86,6 99,0 232 373 425
17,5 26,2 50,0 42,4 91 134 128
Ø22 30,4*
41,9 89,1 101,5 238 381 433
13,3* 22,4 42,5 35,9 77 113 108
Ø24
31,59*
43,2 91,6 104,0 244 389 441 462 964
11,6* 19,4 36,7 30,9 66 97 92 80 150
Ø25 43,9
92,8 105,2 246 393 446 466 972
18,2 34,3 28,8 61 90 86 75 140
Ø28 45,9
96,5 108,9 255 405 458 478 995 1776
15,2 28,4 23,8 51 74 70 61 114 167
Ø30 99,0
111,4 260 413 466 486 1010 1800
25,4 21,2 45 66 62 54 101 147
Ø32 101,5
113,9 266 421 474 494 1025 1824
22,9 19,0 40 59 56 48 90 131
Ø35 105,2
117,6 274 433 486 506 1048 1860
19,8 16,4 35 51 48 41 77 112
Ø38 108,9
121,3 282 446 498 518 1071 1896
17,4 14,4 31 44 42 36 67 97
Ø40 123,8
288 454 506 527 1086 1920
13,2 28 41 38 33 61 88
Ø42 126,2
293 462 514 535 1102 1944
12,2 26 38 35 30 56 81
Ø45 129,9
302 474 527 547 1125 1980
11,0 23 34 31 27 50 72
Ø48 310
486 539 559 1148 2016
21 30 28 24 45 64
Ø50 315
494 547 567 1163 2040
20 28 26 23 42 60
Ø55 514
567 587 1201 2100
24 23 19 36 51
Ø60 587
608 1239 2160
20 17 31 44
Ø65 608
626 1278 2220
17 15 27 39
Ø70 648
1316 2280
13 24 34
Ø75 1354
2340
22 31
Ø80 1392
2400
20 28
Ø85 2460
25
Ø90 2520
23
* only type 2.0 = 2 x Clamping screw M4; T
A
= 2,9 Nm
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the hubs as well as all screw connections have to be
secured against self-slackening additionally, e. g. by glueing with Loctite (medium-tight).

A T T E N T I O N !
Clamping hubs type 2.0 and 2.5 without keyway are not permissible for applications according to DIN EN ISO 13849,
part 2.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
6of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Clamping ring hubs 6.0, 6.0 steel and 6.0 light
Pull-off thread M
1
between clamping screws.
Illustration 5: ROTEX
®
GS clamping ring hubs
Table 4:Dimensions
Size Spider (part 2)
1)
Torques [Nm] Dimensions [mm]
D
H
2)
d
H
L l
1
; l
2
l
3
E b s a M
1
3)
6.0 light (size 14
–
48)
Hub/Clamping ring material - Aluminium (Al-H)
14
Figures see
table 2
30 10,5 50 18,5 13,5 13 10 1,5 2,0 M3
19 40 18 66 25 18 16 12 2,0 3,0 M4
24 55 27 78 30 22 18 14 2,0 3,0 M5
28 65 30 90 35 27 20 15 2,5 4,0 M5
38 80 38 114 45 35 24 18 3,0 4,0 M6
42 95 46 126 50 35 26 20 3,0 4,0 M8
48 105 51 140 56 41 28 21 3,5 4,0 M10
6.0 steel (size 19
–
90
)
6.0 (size 14 – 38) Hub and clamping ring material - Steel (St-H)
Hub material – Aluminium (Al-H)/clamping ring material – steel (St-H)
19
Figures see
table 2
40 18 66 25 18 16 12 2,0 3,0 M4
24 55 27 78 30 22 18 14 2,0 3,0 M5
28 65 30 90 35 27 20 15 2,5 4,0 M5
38 80 38 114 45 35 24 18 3,0 4,0 M6
42 95 46 126 50 35 26 20 3,0 4,0 M8
48 105 51 140 56 41 28 21 3,5 4,0 M10
55 120 60 160 65 45 30 22 4,0 4,5 M10
65 135 68 185 75 55 35 26 4,5 4,5 M12
75 160 80 210 85 63 40 30 5,0 5,0 M12
90 200 104 245 100 75 45 34 5,5 6,5 M16
1) For coupling selection please see ROTEX
®
GS catalogue.
Please note transmittable torques of clamping connections (see table 5 to7)
2) ØD
H
+ 2 mm with high speeds for expansion of spider
3)
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the hubs as well as all
screw connections have to be secured against self-slackening additionally, e. g. by
glueing with Loctite (medium-tight).

AT T E NT I O N!
Subject to the increased safety with the assembly (several screws are tightened) and the high
friction torque of the clamping ring hub, this type is permissible for applications according to
DIN EN ISO 13849, part 2.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
7of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1 Technical Data
Table 5: Torques and surface pressure of clamping ring hubs 6.0 light
Size 14 19 24 28 38 42 48
Clamping screw M
1)
M3 M4 M5 M5 M6 M8 M10
Number z
(for each clamping
ring hub) 4 6 4 8 8 4 4
Tightening torque
T
A
[Nm] Hub/Clamping ring material – Aluminium (Al-H)
1,34 3 6 6 10 25 49
Bore Ø d
1
Transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm
2
]
Ø6 5,4
49,4
Ø10 7,5 17
39,3 65,9
Ø11 11,3 20
49,7 67,3
Ø14 24,5 41 47
57,6 87,9 80,6
Ø15 49 57
92,5 85,3
Ø16 36 67 99
55,3 89,4 102
Ø19 56 98 145
64 96,6 109
Ø20 64 110 133 203
67 99 88 102,9
Ø22 135 165 252
102,8 92,4 107
Ø24 127 201 304
76,3 95,7 110
Ø25 139 219 331
77,9 97 110,2
Ø28 175 248 394 444
81,5 86,9 104,9 113,6
Ø30 285 452 508 572
88,6 106,3 114,8 108
Ø32 253 453 535 638
66,5 91 103,5 107,2
Ø35 307 543 638 762
69,3 93,2 105,4 108,9
Ø38 329 550 692 842
63,6 78,4 95 100
Ø40 609 763 929
79,5 95,8 101,1
Ø42 669 754 943
80,3 83,4 91
Ø45 634 858 1074
63,6 84,6 91,9
Ø48 964 1208
85,2 92,3
Ø50 976 1136
79 77,3
Ø55 1336
77,4
The transmittable torques of the clamping connection consider the max. clearance with bore H7/k6 shaft fit.
The torque is reduced in case of bigger fit clearance.
1)
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the
hubs as well as all screw connections have to be secured against
self-slackening additionally, e. g. by glueing with Loctite (medium-
tight).
!
C A U T I O N !
An calculation is necessary if
hollow shafts are used!

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
8of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Table6: Torques and surface pressure of clamping ring hubs 6.0 steel
Size 19 24 28 38 42 48 55 65 75 90
Clamping screw M
1)
M4 M5 M5 M6 M8 M10 M10 M12 M12 M16
Number z (for each
clamping ring hub)
6 4 8 8 4 4 4 4 5 5
Tightening torque
T
A
[Nm] Hub and clamping ring material – Steel
4,1 8,5 8,5 14 35 69 69 120 120 295
Bore Ø d
1
Transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm
2
]
Ø10 27 25 -
160 119
Ø11 32 30
160 119
Ø14 69 70
211 170
Ø15 84 87 108
225 184 168
Ø16 57 56 131
134 104 178
Ø19 94 97 207
157 127 200
Ø20 110 114 148 208
166 135 129 138
Ø22 86 197 275
84 142 151
Ø24 116 253 253
96 154 163
Ø25 133 285 395 358 489
101 159 168 152 179
Ø28 192 315 439 398 658
116 141 149 135 192
Ø30 382 531 483 616
148 157 143 157
Ø32 330 463 416 704
79 120 108 158
Ø35 433 603 547 899 863
123 131 119 168 138
Ø38 503 593 536 896 856
122 118 99 142 116
Ø40 689 625 1030 991 1446
114 104 147 121 140
Ø42 793 571 962 918 1355 1710
119 86 125 102 119 134
Ø45 776 704 1160 1119 1637 2053
102 92 131 108 125 141
Ø48 851 1379 1110 1635 2059
98 137 94 110 124
Ø50 865 1222 1247 1827 2294 3845
92 112 97 113 127 176
Ø55 1543 1277 1887 2384 4249
117 83 97 109 161
Ø60 1672 2429 3040 4794
91 104 117 153
Ø65 1605 2368 2983 5858
74 87 98 159
Ø70 2008 2930 3664 5900
80 92 104 138
Ø80 4148 7036
92 126
Ø90 8047
114
Ø95 9247
118
The transmittable torques of the clamping connection take into account the max. fitting tolerance for shaft clearance k6/bore H7,
from Ø 55 G7/m6. With a higher fitting tolerance the torque is reduced.
1)
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the
hubs as well as all screw connections have to be secured against self-
slackening additionally, e. g. by glueing with Loctite (medium-tight).
!
C A U T I O N
!
An calculation is necessary if
hollow shafts are used!

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
9of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1 Technical Data
Continuation of table 6: Torques and surface pressure of clamping ring hubs 6.0 steel
Size 19 24 28 38 42 48 55 65 75 90
Clamping screw M
1)
M4 M5 M5 M6 M8 M10 M10 M12 M12 M16
Number z (for each
clamping ring hub)
6 4 8 8 4 4 4 4 5 5
Tightening torque
T
A
[Nm] Hub and clamping ring material – Steel
4,1 8,5 8,5 14 35 69 69 120 120 295
Bore Ø d
1
Transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm
2
]
Ø100 9575
110
Ø105 10845
113
Table 7: Torques and surface pressure of clamping ring hubs 6.0
Size 14 19 24 28 38
Clamping screw M
1)
M3 M4 M5 M5 M6
Number z (for each
clamping ring hub)
4 6 4 8 8
Tightening torque
T
A
[Nm] Hub material – Aluminium (Al-H); Clamping ring material - steel
1,34 3 6 6 10
Bore Ø d
1
Transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm
2
]
Ø6 8,6
225
Ø10 13,8 41
130 272
Ø11 14,7 45 48
118 248 214
Ø14 22,7 62 67
108 211 182
Ø15 68 74 142
203 175 243
Ø16 67 72 154
171 148 231
Ø19 83 90 189
153 132 203
Ø20 90 97 188 269
149 129 178 196
Ø22 99 212 307
107 167 183
Ø24 112 237 337
102 157 172
Ø25 120 250 356
100 153 167
Ø28 143 280 398
96 136 148
Ø30 307 436
131 142
Ø32 310 442
115 126
Ø35 353 501
110 120
Ø38 389 533
103 107
Ø40 572
104
Ø42 615
102
Ø45 644
92
The transmittable torques of the clamping connection take into account the max. fitting tolerance for shaft clearance k6/bore H7,
from Ø 55 G7/m6. With a higher fitting tolerance the torque is reduced.
1)
P R E C A U T I O N !
For the applications in hazardous areas the setscrews to fasten the
hubs as well as all screw connections have to be secured against self-
slackening additionally, e. g. by glueing with Loctite (medium-tight).
!
C A U T I O N !
An calculation is necessary if
hollow shafts are used!

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
10of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
DKM
Illustration 6: ROTEX
®
GS, DKM
Table 8: Dimensions
ROTEX
®
GS
Size
Finish bore Dimensions [mm]
d
max.1)
D D
H
d
H
d
H1
l
1
; l
2
M; N l
11
l
12
L
DKM
E b s a
Hub material - Aluminium (Al-H) Spacer material - Aluminium (Al-H)
5 5 - 10 - - 5 - 3 13 23 5 4 0,5 4,0
7 7 - 14 - - 7 - 4 20 34 8 6 1,0 6,0
9 11 - 20 7,2 - 10 - 5 25 45 10 8 1,0 1,5
12 12 - 25 8,5 - 11 - 6 30 52 12 10 1,0 3,5
14 16 - 30 10,5 - 11 - 8 34 56 13 10 1,5 2,0
19 24 - 40 18 18 25 - 10 42 92 16 12 2,0 3,0
24 28 - 55 27 27 30 - 16 52 112 18 14 2,0 3,0
28 38 - 65 30 30 35 - 18 58 128 20 15 2,5 4,0
38 45 - 80 38 38 45 - 20 68 158 24 18 3,0 4,0
Hub material - Steel (St-H) Spacer material - Aluminium (Al-H)
42 55 85 95 46 46 50 28 22 74 174 26 20 3,0 4,0
48 62 95 105 51 51 56 32 24 80 192 28 21 3,5 4,0
55 74 110 120 60 60 65 37 28 88 218 30 22 4,0 4,5
1) depend on hub type

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
11of36
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mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Compact
Illustration 7: ROTEX
®
GS 7 - 19 Compact
single slotted
1)
(type 2.8/2.9) Illustration 8: ROTEX
®
GS 24 - 38 Compact
axially slotted (type 2.8/2.9)
Table 9: Dimensions
Size
Spider
(part 2)
Torques
[Nm]
Dimensions [mm]
d
max.
D
H
D
K
L l
1
; l
2
E b s t e M
7
Figures
see table 2
7 14 16,6 18 5 8 6 1 2,5 5,0 M2
9 9 20 21,3 24 7 10 8 1 3,5 6,7 M2,5
12 12 25 26,2 26 7 12 10 1 3,5 8,3 M3
14 16
1)
30 30,5 32 9,5 13 10 1,5 4,5 9,6 M4
19 24
1)
40 45,0 50 17 16 12 2 9,0 14,0 M6
24 32 55 57,5 54 18 18 14 2 11,0 20,0 M6
28 35 65 69,0 62 21 20 15 2,5 12,0 23,8 M8
38 45 80 86,0 76 26 24 18 3 16,0 30,5 M10
1) Size 14 with screw M3 and dimension e=10,4; size 19 with screw M5 and dimension e=15,5

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
12of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1
Technical Data
Table10: Torques and surface pressure of short clamping hubs type 2.8 / 2.9
Size 7 9 12 14 19 24 28 38
Clamping screw M M2 M2,5 M3 M4 M6 M6 M8 M10
Dimension t 2,5 3,5 3,5 4,5 9,0 11,0 12,0 16,0
Dimension e 5,0 6,7 8,3 9,6 14,0 20,0 23,8 30,5
Dimension ØD
K
16,6 21,3 26,2 30,5 45,0 57,5 69,0 86,0
Tightening torque T
A
[Nm] 0,37 0,76 1,34 2,9 10 10 25 49
Bore Ø Transmittable torque of clamping hub [Nm]
Surface pressure [N/mm
2
]
Ø3 0,8
173,5
Ø4 0,9 1,9 3,4
105,1 151,6 273,6
Ø5 1,0 2,0 3,6 7,1
72,1 102,6 183,6 262,2
Ø6 1,0 2,1 3,7 7,4
53,4 75,1 133,4 189,6
Ø7 1,1 2,2 3,9 7,7
41,7 58 102,3 144,8
Ø8 2,3 4,1 8,0 24,3
46,6 81,7 115,1 191,8
Ø9 2,4 4,2 8,2 25,0
38,6 67,2 94,3 155,7
Ø10 4,4 8,5 25,7 21,2
56,5 79,1 129,5 82,3
Ø11 4,6 8,8 26,3 23,3
48,5 67,6 109,9 74,8
Ø12 4,7 9,1 27,0 25,4
42,2 58,7 94,7 68,6
Ø14 5,8 28,4 29,7 54,4
27,2 73,1 58,8 92,0
Ø15 5,9 29,0 31,8 58,3 92,6
24,4 65,2 54,9 85,9 109,6
Ø16 6,1 29,7 33,9 62,2 98,8
22,1 58,6 51,4 80,5 102,7
Ø18 31,1 38,2 70,0 111,1
48,4 45,7 71,5 91,3
Ø19 31,7 40,3 73,9 117,3
44,4 43,3 67,8 86,5
Ø20 32,4 42,4 77,8 123,5
40,9 41,1 64,4 82,2
Ø22 25,4 46,7 85,5 135,8
26,5 37,4 58,5 74,7
Ø24 26,4 50,9 93,3 148,2
23,1 34,3 53,7 68,5
Ø25 53,0 97,2 154,3
32,9 51,5 65,8
Ø28 59,4 108,9 172,9
29,4 46,0 58,7
Ø30 63,6 116,6 185,2
27,4 42,9 54,8
Ø32 67,9 124,4 197,5
25,7 40,2 51,4
Ø35 136,1 216,1
36,8 47,0
Ø38 234,6
43,3
Ø40 246,9
41,1
Ø42 259,3
39,1
Ø45 277,8
36,5
= ROTEX
®
GS 14: 1 x clamping screw M3, T
A
= 1,34 Nm, e = 10,4;
ROTEX
®
GS 19: 1 x clamping screw M5, T
A
= 6 Nm, e = 15,5

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
13of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
1 Technical Data
Expansion hubs
Illustration 9: ROTEX
®
GS, expansion hubs (type 9.0) with clamping hub
1)
Table 11: Dimensions
Size
Spider
(part 2)
Torques
[Nm]
Dimensions [mm] Clamping
screw
D
1
D
2
D
H
l
1
l
4
l
5
l
6
E b s M T
A
9
Figures
see table 2
10 - 20 20 11 - 0 10 8 1,0 M4 2,9
12 10 20 25 19 14 1,5 2 12 10 1,0 M4 2,9
14 12 24 30 18,5 12,5 3 2 13 10 1,5 M4 2,9
19 20 35 40 28 20 1 0 16 12 2,0 M6 10
24 25 45 55 38 30 1 4 18 14 2,0 M8 25
28 35 55 65 44 36 1 5 20 15 2,5 M10 49
1) The expansion hub can be combined with other hub types being the opposite side, too. l
2
depends on the hub design. For further hub
designs see chapter 4.1.
2) For coupling selection – see ROTEX
®
GS catalogue

AT T E NT I O N!
Transmittable friction torques for D
1
on request (depending on the hollow shaft).

AT T E NT I O N!
Expansion hubs without keyway are not permissible for applications according to
DIN EN ISO 13849, part 2.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
14of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
2 Hin
ts
The
ROTEX
®
GS
coupling was developed for a backlash-
free power transmission and easy plug-in assembly. This
backlash-free power transmission is realized in the range
of prestress (see illustration10). The big concave surface
contact results in a lower surface pressure on the involute
tooth. Consequently the tooth can be overloaded many
times over with no wear/deformation.
The safe operation in the range of prestress is ensured,
because the coupling operates according to the principle of
the positive-locking rubber spring prestress with high
damping features. The star-shape coupling spider is
inserted into the cams of the hubs which are machined
specifically accurately with a small amount of prestress,
resulting in the necessary backlash-free power
transmission.
Illustration 10: prestress of spider
The flexible teeth compensating for misalignments are radially supported in the internal diameter by means of a
web. An external deformation is limited by the concave shape of the cams, ensuring a smooth operation even
with bigger masses (e. g. steel mills, articulated arms, etc.). The flexible spiders for the GS series are available in
five different kinds of Shore hardness, injected in different colours, either as a torsionally soft or hard material.
2.1
Coupling Selection
!
C A U T I O N
!
For a long-term smooth operation of the coupling the coupling has to be selected based on
the selection standards applying for the application (in accordance with DIN 740, part 2)
(see ROTEX
®
GS catalogue).
In case that the operating conditions change (power, speed, modifications on engine and
machine) it is absolutely necessary to verify the coupling selection.
Please note that the technical details concerning the torque refer to the spider only. The
transmittable torque of the shaft-hub-connection has to be reviewed by the customer and is
subject to his responsibility.
For drives subject to dangerous torsional vibrations (drives with periodical torsional vibration load) it is necessary
to perform a torsional vibration calculation to ensure a safe operation. Typical examples of drives subject to
dangerous torsional vibrations are drives with diesel engines, piston pumps, piston compressors, etc. If requested,
KTR will perform the coupling selection and torsional vibration calculation.
2.2 General Hints
Please read through these mounting instructions carefully before you set the coupling into operation.
Please pay special attention to the safety instructions.
The
ROTEX
®
GS
coupling is suitable and approved for the application in hazardous areas.
For the use of couplings in hazardous areas please note the special safety hints and regulations as
per appendix A.
In order to ensure the operating principle of ROTEX
®
GS and avoid an early wear of the coupling, a
corresponding torsional stiffness factor „Sd“ has to be considered for the selection, each depending on the
application (see catalogue). Temperatures and shocks are provided with the corresponding factors, too (see
catalogue).
The mounting instructions are part of your product. Please keep them carefully and close to the coupling. The
copyright for these mounting instructions remains with KTRKupplungstechnik GmbH.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
15of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
2 Hin
ts
2.3 Safety and Advice Hints
STOP
D A N GE R ! Danger of injury to persons
!
C A U T I O N ! Damages on the machine possible

AT T E NT I O N! Pointing to important items
P R E C A U T I O N ! Pointing to explosion-proof applications
2.4
General Hint to
Danger
STOP
D AN G E R !
With the assembly, operation and maintenance of the coupling it has to be made sure that
the entire drive train is protected against unintentional engagement. You may be seriously
hurt by rotating parts. Please make absolutely sure to read through and observe the
following safety instructions.
•All operations on and with the coupling have to be performed taking into account „safety first“.
•Please make sure to disengage the power pack before you perform your work on the coupling.
•Protect the power pack against unintentional engagement, e. g. by providing hints at the place of engagement
or removing the fuse for current supply.
•Do not touch the operation area of the coupling as long as it is in operation.
•Please protect the coupling against unintentional touch. Please provide for the necessary protection devices
and caps.
2.5
Proper Use
You may only assemble, operate and maintain the coupling if you
•have carefully read through the mounting instructions and understood them
•had technical training
•are authorized to do so by your company
The coupling may only be used in accordance with the technical details (see tables 1 to 11, chapter 1).
Unauthorized modifications on the coupling type are not admissible. We do not take any warranty for resulting
damages. To further develop the product we reserve the right for technical modifications. The ROTEX
®
GS
described in here corresponds to the technical status at the time of printing of these mounting instructions.
3
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 in case of favourable stock
conditions.
!
C A U T I O N !
The storage rooms may 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 there is no condensation. The best relative air humidity is less than
65%.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
16of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
4 Assembly
Generally the coupling is delivered in parts. Before the assembly, the coupling has to be inspected regarding its
completeness.
4.1
Hub
Type
s
Type
1.0 with keyway and
thread
1.1 without keyway
with thread
1.2 without keyway
without thread
Hint: No ATEX
release.
Type up to size 14
standard/
Compact up to
size 19
2.0 single slotted
without keyway
2.1 single slotted with
keyway
Type from size 19
standard
2.5 double slotted
without keyway
2.6 double slotted
with keyway
Type
2.8 axially slotted without keyway
(size 7 to size 19 single slotted)
2.9 axially slotted with keyway
(size 7 to size 19 single slotted)
Type 4.2
1)
with CLAMPEX
®
KTR 250
Type 6.0/6.0 steel/
6.0 light
Clamping ring hub
Type 7.5 (without keyway) and
7.6 (with keyway)
Split clamping hub for DKM/ZR3
Type 7.8 (without keyway) and
7.9 (with keyway)
Hint: Subject to the position of the clamping
screws the application is recommended for
single-cardanic couplings only.
Type 9.0
Expansion hub
Hint: No ATEX release.
Illustration 11: Hub types
1)

AT T E NT I O N
!
Selection of clamping sets
With the use in explosion-proof areas the clamping hubs have to be selected in a way
that the difference between the peak torque of the machine including all operation
parameters and the rated torque of the clamping hub is at least a service factor of
s = 2.
P R E C A U T I O N !
Hub types 1.1, 2.0, 2.5, 2.8, 7.5 and 7.8 (without feather key) may only be used in category
3and are not permissible for applications according to DIN EN ISO 13849, part 2.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
17of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
4
Assembly
4.2
Coupling Components
Features of the standard spiders
Spider hardness
(Shore)
80 Sh-A-GS 92 Sh-A-GS 95/98 Sh-A-GS 64 Sh-D-H-GS 64 Sh-D-GS 72 Sh-D-H-GS 72 Sh-D-GS
Size
5 - 24 5 - 55 5 - 90 7 - 38 42 - 90 24 - 38 42 - 65
Material
Polyurethane Polyurethane Polyurethane Hytrel Poly-
urethane Hytrel Poly- urethane
Marking
(colour)
Components of ROTEX
®
GS, backlash-free shaft couplings
C
omponent
Quantity
D
e
scription
1 2 hub
2 1 spider
3 2 setscrewDIN EN ISO 4029
Illustration 12: ROTEX
®
GS, size 5 - 38 Illustration 13: ROTEX
®
GS, size 42 - 90
Components of ROTEX
®
GS, clamping hubs
Component
Quantity
Description
1 2 clamping hub (hub type 2.0, 2.1, 2.5 or 2.6)
2 1 spider
3 2 cap screwsDIN EN ISO 4762
Illustration 14: ROTEX
®
GS, clamping hub

A T T E N T I O N !
Clamping hubs type 2.0 and 2.5 without keyway are not permissible for applications according to
DIN EN ISO 13849, part 2.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
18of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
4
Assembly
4.2
Coupling Components
Components of ROTEX
®
GS, clamping ring hubs (types 6.0, 6.0 steel, 6.0 light and type 6.5)
Component
Quantity
Description
1 2 clamping ring
2 2 clamping ring hub
3 1 spider
4 see table
5,6 and 7
cap screwsDIN EN ISO 4762
Illustration 15: ROTEX
®
GS, clamping ring hub

A T T E N T I O N !
Selection of clamping hubs
With the use in explosion-proof areas the clamping hubs have to be selected in a way that the
difference between the peak torque of the machine including all operation parameters and the
frictionally engaged torque of the clamping hub is at least a service factor of s = 2.

A T T E N T I O N !
Subject to the increased safety with the assembly (several screws are tightened) and the high
friction torque of the clamping ring hub, this design is permissible for applications according to
DIN EN ISO 13849, part 2.
Components of ROTEX
®
GS, DKM
Component
Quantity
Description
1 2 hub
2 2 spider
3 1 DKM spacer
4 2 setscrewDIN EN ISO 4029
Illustration 16: ROTEX
®
GS, DKM

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
19of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
4
Assembly
4.2
Coupling Components
Components of ROTEX
®
GS Compact, clamping hubs
Component
Quantity
Description
1 2 clamping hub (hub types 2.8 or 2.9)
2 1 spider
3 2 / 4 cap screwsDIN EN ISO 4762
Illustration 17: ROTEX
®
GS Compact, size 7 - 19 Illustration 18: ROTEX
®
GS Compact, size 24 - 38
P R E C A U T I O N !
Hub types 1.1, 2.0, 2.5, 2.8, 7.5 and 7.8 (without feather key) may only be used in category 3 and are
not permissible for applications according to DIN EN ISO 13849, part 2.

A T T E N TI O N
!
Selection of clamping hubs
With the use in explosion-proof areas the clamping hubs have to be selected in a way that the
difference between the peak torque of the machine including all operation parameters and the
frictionally engaged torque of the clamping ring hub is at least a service factor of s = 2.
Components of ROTEX
®
GS, Expansion hubs
Component
Quantity
Description
1
1)
hub
2 1 spider
3 1 expansion hub
4 1 clamping pin for expansion hub
5
1)
cap screws DIN EN ISO 4762
6 1 cap screws DIN EN ISO 4762
1)
The expansion hub can be combined with other hub designs being the opposite side, too, please note your dimension sheet.
Illustration 19: ROTEX
®
GS, expansion hubs

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX
®
GS
Operating/mounting instructions
KTR-N
Sheet:
Edition:
45510 EN
20of36
15
Please note protection
mark ISO 16016. Drawn: 15.10.12 Pz Replaced for: KTR-N valid from 08.02.12
Verified: 29.10.12 Pz Replaced by:
4 Assembly
4.3
Hints for Assembly
Subject to its typeROTEX
®
GS allows to axially plug in the coupling having assembled the hubs onto the shaft
journal. Consequently there is no need for subsequent screwing and the corresponding mounting holes in the
housing.
The pegs on the spider arranged reciprocally avoid a contact between the spider and the hubs over the full
surface. Observing the distance dimension E, the ability for displacement of the coupling is ensured in this way.All
teeth are chamfered on the face which allows a blind assembly. When the coupling hubs are combined with the
ROTEX
®
GS spider an axial mounting force is produced resulting from the flexible prestress of the star-shape
elastomer. This mounting force varies depending on the coupling size, the spider hardness and the machining
tolerances. The axial mounting force is compensated for after assembly of the hubs and consequently does not
mean any danger of axial load onto adjacent bearings.
The mounting force can be reduced by slightly greasing or oiling the elastomer or the hubs. For this purpose
please only use oils and greases on a mineral oil basis without any additives. Lubricants on a silicone basis
(e. g. OptimolOptisit WX) or vaseline have proven their worth, too.
4.4
Hint for Finish Bore
STOP
D AN G E R !
The maximum permissible bore diameters d (see tables 1
to 11 in chapter 1 – Technical Data) must not be exceeded.
If these figures are not observed, the coupling may tear.
Rotating fragments may be hazardous.
•If the hub bore is machined by the customer, the accuracy in
concentric running or run-out, respectively (see
illustration20) has to be observed.
•Please make absolutely sure to observe the figures for
Ød
max.
.
•Align the hubs carefully when machining the finish bore.
•Please use a setscrew according to DIN EN ISO 4029 with
cup point or an end plate to secure the hubs axially.
Illustration 20: accuracy in concentric
running or run-out
!
C A U T I O N !
The buyer is responsible for all subsequently made machinings to unbored or pilot bored
and to finish machined coupling parts and spare parts. KTR does not assume any warranty
claims resulting from insufficient refinish.
P R E C A U T I O N !
KTR supplies unbored or pilot bored coupling parts and spare parts on explicit customer´s
request. These parts are additionally labelled with the symbol .
Table 12: SetscrewsDIN EN ISO 4029
Size 5 7 9 12 14 19 24 28 38 42 48 55 65 75 90
Dimension G M2 M3 M4 M4 M4 M5 M5 M8 M8 M8 M8 M10 M10 M10 M12
Dimension t 2,5 3,5 5 5 5 10 10 15 15 20 20 20 20 25 30
Tightening
torque T
A
[Nm] - - 1,5
1,5 1,5 2 2 10 10 10 10 17 17 17 40