KTR ROTEX GS Series User manual

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
1 of 33
14
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ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
ROTEX®GS, shaft coupling
ROTEX®GS, clamping hubs
ROTEX®GS, clamping ring hubs
ROTEX®GS, clamping ring hubs light
ROTEX®GS, DKM
ROTEX®GS
Torsionally flexible jaw
couplings
types
shaft coupling,
clamping hubs,
clamping ring hubs,
clamping ring hubs light,
DKM, Compact
and combinations
in accordance with standard
94/9/EC (ATEX 95)
for finish bored and
pilot bored/unbored
couplings
ROTEX®GS, Compact

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
2 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
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.
Table of Contents
1 Technical Data
2 Hints
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 Displacements – Alignment of the Couplings
4.9 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
3 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Standard shaft coupling
illustration 1: ROTEX®GS, size 5 - 38 illustration 2: ROTEX®GS, size 42 - 75
Table 1: Dimensions
Dimensions [mm] Setscrew 1)
ROTEX®GS
Size D DHd
HL l1; l2M / 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
1)
ATTENTION!
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
Finish bore [mm] – Hub type
Spider (part 2) 1)
Rated torque [Nm]
ROTEX®GS
Size 80 Sh A-GS 92 Sh A-GS 98 Sh A-GS 64 Sh D-GS 72 Sh D-GS
Unbored dmin. 1.0
dmax.
1.1, 1.2
dmax.
2.0, 2.1
dmax.
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 15 16 16
1.0, 1.1
dmax.
2.5
dmax.
2.6
dmax.
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
1) Maximum torque of coupling TKmax. = Rated torque of coupling TK 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
4 of 33
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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
ROTEX®GS
Size 5 7 9 12 14 19 24 28 38 42 48 55 65 75
Clamping 1)
screw M1M1,2 M2 M2,5 M3 M3 M6 M6 M8 M8 M10 M12 M12 M12 M16
Dimension t12,5 3,5 5,0 5,0 5,0 11,0 10,5 11,5 15,5 18 21 26 33 36
Dimension e 3,5 5,0 7,5 9,0 11,5 14,5 20 25 30 32 36 42,5 45 51
Dimension ØDK11,4 16,5 23,4 27,5 32,2 46 57,5 73 83,5 93,5 105 119,5 124 147,5
Tightening
torque TA[Nm] - 0,37 0,76 1,34 1,34 10,5 10,5 25 25 69 120 120 120 295
Bore Ø
transmittable torque of Clamping hub [Nm]
Surface pressure [N/mm2]
-
Ø2
-0,84
Ø3 71,02
- 0,91 2,07 3,65 4,48
Ø4 43,02 68,51 109,9 134,9
- 0,97 2,18 3,81 4,64
Ø5 29,50 46,15 73,5 89,5
1,04 2,28 3,98 4,81 23,6
Ø6 21,85 33,65 53,3 64,4 139,3
1,10 2,39 4,14 4,97 24,3
Ø7 17,06 25,90 40,8 48,9 105,2
1,17 2,50 4,31 5,14 25,0 32,4
Ø8 13,83 20,73 32,5 38,7 82,8 131,0
2,61 4,48 5,30 25,7 33,1
Ø9 17,09 26,6 31,6 67,2 105,7
2,72 4,64 5,47 26,3 33,8 74,3
Ø10 14,42 22,4 26,4 55,9 87,3 171,3
2,83 4,81 5,64 27,0 34,4 75,5
Ø11 12,40 19,2 22,5 47,4 73,6 143,9
4,97 5,80 27,7 35,1 76,7 89,1
Ø12 16,7 19,4 40,8 63,1 122,9 105,9
1)
ATTENTION!
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).

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
5 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Continuation of table 3: Torques and surface pressure of clamping hubs types 2.0 / 2.5
ROTEX®GS
Size 5 7 9 12 14 19 24 28 38 42 48 55 65 75
Clamping 1)
screw M1M1,2 M2 M2,5 M3 M3 M6 M6 M8 M8 M10 M12 M12 M12 M16
Dimension t12,5 3,5 5,0 5,0 5,0 11,0 10,5 11,5 15,5 18 21 26 33 36
Dimension e 3,5 5,0 7,5 9,0 11,5 14,5 20 25 30 32 36 42,5 45 51
Dimension ØDK11,4 16,5 23,4 27,5 32,2 46 57,5 73 83,5 93,5 105 119,5 124 147,5
Tightening
torque TA[Nm] - 0,37 0,76 1,34 1,34 10,5 10,5 25 25 69 120 120 120 295
Bore Ø
transmittable torque of Clamping hub [Nm]
Surface pressure [N/mm2]
6,13 29,0 36,5 79,2 91,6 216
Ø14 15,1 31,4 48,1 93,2 80,0 172
6,30 29,7 37,1 80,4 92,8 219 352
Ø15 13,5 28,0 42,7 82,5 70,6 152 225
6,46 30,4 37,8 81,7 94,1 221 356
Ø16 12,2 25,2 38,2 73,6 62,9 135 200
32,4 39,8 85,4 97,8 230 369
Ø19 19,0 28,5 54,6 46,3 99 149
33,1 40,5 86,6 99,0 232 373 425
Ø20 17,5 26,2 50,0 42,4 91 134 128
30,4* 41,9 89,1 101,5 238 381 433
Ø22
13,3* 22,4 42,5 35,9 77 113 108
31,59* 43,2 91,6 104,0 244 389 441 462 964
Ø24
11,6* 19,4 36,7 30,9 66 97 92 80 150
43,9 92,8 105,2 246 393 446 466 972
Ø25 18,2 34,3 28,8 61 90 86 75 140
45,9 96,5 108,9 255 405 458 478 995
Ø28 15,2 28,4 23,8 51 74 70 61 114
99,0 111,4 260 413 466 486 1010
Ø30 25,4 21,2 45 66 62 54 101
101,5 113,9 266 421 474 494 1025
Ø32 22,9 19,0 40 59 56 48 90
105,2 117,6 274 433 486 506 1048
Ø35 19,8 16,4 35 51 48 41 77
108,9 121,3 282 446 498 518 1071
Ø38 17,4 14,4 31 44 42 36 67
123,8 288 454 506 527 1086
Ø40 13,2 28 41 38 33 61
126,2 293 462 514 535 1102
Ø42 12,2 26 38 35 30 56
129,9 302 474 527 547 1125
Ø45 11,0 23 34 31 27 50
310 486 539 559 1148
Ø48 21 30 28 24 45
315 494 547 567 1163
Ø50 20 28 26 23 42
514 567 587 1201
Ø55 24 23 19 36
587 608 1239
Ø60 201731
608 626 1278
Ø65 171527
648 1316
Ø70 1324
1354
Ø75 22
1392
Ø80 20
* only type 2.0
= 2 x Clamping screw M4; TA= 2,9 Nm
1)
ATTENTION!
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).

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
6 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Clamping ring hubs 6.0, 6.0 steel and 6.0 light
Pull-off thread M1between clamping screws.
illustration 5: ROTEX®GS clamping ring hubs
Table 4: dimensions
Dimensions [mm]
ROTEX®GS
Size
Spider (part 2) 1)
Torques [Nm] DH2) dHL l1; l2l
3E b s a M13)
6.0 light (size 14 – 48) Hub/Clamping ring material - Aluminium (Al-H)
14 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
Figures see
table 2
105 51 140 56 41 28 21 3,5 4,0 M10
6.0 steel (size 19 – 75)
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 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
Figures see
table 2
160 80 210 85 63 40 30 5,0 5,0 M12
1) For coupling selection please see ROTEX®GS catalogue.
Please note transmittable torques of clamping connections (see table 5 and 6)
2) ØDH+ 2 mm with high speeds for expansion of spider
3)
ATTENTION!
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).

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
7 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Table 5: Torques and surface pressure of clamping ring hubs 6.0 light
ROTEX®GS 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
Hub/Clamping ring material – Aluminium (Al-H)Tightening torque
TA[Nm] 1,34 3 6 6 10 25 49
Bore Ø d1
transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm2]
5,4
Ø6 49,4
7,5 17
Ø10 39,3 65,9
11,3 20
Ø11 49,7 67,3
24,5 41 47
Ø14 57,6 87,9 80,6
49 57
Ø15 92,5 85,3
36 67 99
Ø16 55,3 89,4 102
56 98 145
Ø19 64 96,6 109
64 110 133 203
Ø20 67 99 88 102,9
135 165 252
Ø22 102,8 92,4 107
127 201 304
Ø24 76,3 95,7 110
139 219 331
Ø25 77,9 97 110,2
175 248 394 444
Ø28 81,5 86,9 104,9 113,6
285 452 508 572
Ø30 88,6 106,3 114,8 108
253 453 535 638
Ø32 66,5 91 103,5 107,2
307 543 638 762
Ø35 69,3 93,2 105,4 108,9
329 550 692 842
Ø38 63,6 78,4 95 100
609 763 929
Ø40 79,5 95,8 101,1
669 754 943
Ø42 80,3 83,4 91
634 858 1074
Ø45 63,6 84,6 91,9
964 1208
Ø48 85,2 92,3
976 1136
Ø50 79 77,3
1336
Ø55 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)
ATTENTION!
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).
!
CAUTION!
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
8 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Table 6: Torques and surface pressure of clamping ring hubs 6.0 steel
ROTEX®GS Size 19 24 28 38 42 48 55 65 75
Clamping screw M 1) M4 M5 M5 M6 M8 M10 M10 M12 M12
Number z (for each
clamping ring hub) 6 4 8 8 4 4 4 4 5
Hub and clamping ring material – SteelTightening torque
TA[Nm] 4,1 8,5 8,5 14 35 69 69 120 120
Bore Ø d1Transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm2]
27 25
Ø10 160 119
32 30
Ø11 160 119
69 70
Ø14 211 170
84 87 108
Ø15 225 184 168
57 56 131
Ø16 134 104 178
94 97 207
Ø19 157 127 200
110 114 148 208
Ø20 166 135 129 138
86 197 275
Ø22 84 142 151
116 253 253
Ø24 96 154 163
133 285 395 358 489
Ø25 101 159 168 152 179
192 315 439 398 658
Ø28 116 141 149 135 192
382 531 483 616
Ø30 148 157 143 157
330 463 416 704
Ø32 79 120 108 158
433 603 547 899 863
Ø35 123 131 119 168 138
503 593 536 896 856
Ø38 122 118 99 142 116
689 625 1030 991 1446
Ø40 114 104 147 121 140
793 571 962 918 1355 1710
Ø42 119 86 125 102 119 134
776 704 1160 1119 1637 2053
Ø45 102 92 131 108 125 141
851 1379 1110 1635 2059
Ø48 98 137 94 110 124
865 1222 1247 1827 2294
Ø50 92 112 97 113 127
1543 1277 1887 2384
Ø55 117 83 97 109
1672 2429 3040
Ø60 91 104 117
1605 2368 2983
Ø65 74 87 98
2008 2930 3664
Ø70 80 92 104
4148
Ø80 92
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)
ATTENTION!
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). !
CAUTION!
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
9 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Table 7: Torques and surface pressure of clamping ring hubs 6.0
ROTEX®GS 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
Hub material – Aluminium (Al-H); Clamping ring material - steelTightening torque
TA[Nm] 1,34 3 6 6 10
Bore Ø d1Transmittable torque of clamping ring hub [Nm]
Surface pressure [N/mm2]
8,6
Ø6 225
13,8 41
Ø10 130 272
14,7 45 48
Ø11 118 248 214
22,7 62 67
Ø14 108 211 182
68 74 142
Ø15 203 175 243
67 72 154
Ø16 171 148 231
83 90 189
Ø19 153 132 203
90 97 188 269
Ø20 149 129 178 196
99 212 307
Ø22 107 167 183
112 237 337
Ø24 102 157 172
120 250 356
Ø25 100 153 167
143 280 398
Ø28 96 136 148
307 436
Ø30 131 142
310 442
Ø32 115 126
353 501
Ø35 110 120
389 533
Ø38 103 107
572
Ø40 104
615
Ø42 102
644
Ø45 92
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)
ATTENTION!
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). !
CAUTION!
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
10 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
DKM
illustration 6: ROTEX®GS, DKM
Table 8: Dimensions
Finish bore Dimensions [mm]
ROTEX®
GS
Size dmax. 1) D DHd
Hd H1 l 1; l2M; N l11 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
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1 Technical Data
Compact
illustration 7: ROTEX®GS 7 - 19 Compact
single slotted 1) type 2.0
illustration 8: ROTEX®GS 24 - 38 Compact
axially slotted type 2.8
Table 9: Dimensions
Dimensions [mm]
ROTEX®GS
Compact
Size
Spider
(part 2)
Torques
[Nm]
dmax. D
HD KL l1/l2E b s t e M
TA
[Nm]
7 7 14 16,6 18 5 8 6 1 2,5 5,0 M2 0,37
9 9 20 21,3 24 7 10 8 1 3,5 6,7 M2,5 0,76
12 12 25 26,2 26 7 12 10 1 3,5 8,3 M3 1,34
14 16
1) 30 30,5 32 9,5 13 10 1,5 4,5 9,6 M4 2,9
19 24
1) 40 45,0 50 17 16 12 2 9 14,0 M6 10
24 32 55 57,5 54 18 18 14 2 11 20,0 M6 10
28 35 65 69,0 62 21 20 15 2,5 12 23,8 M8 25
38
Figures
see table 2
45 80 86,0 76 26 24 18 3 16 30,5 M10 49
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
12 of 33
14
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ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
1 Technical Data
Table 10: Torques and surface pressure of clamping hubs 2.0 (shortened) / 2.8
ROTEX®GS
Compact
Size
7 9 12 14 19 24 28 38
Clamping screw M14) M2,5 M3 M3 M4 M6 M6 M8 M8
Dimension t13,5 3,5 5,0 4,5 14,0 11 12 16
Dimension e 6,7 8,3 9,6 11,5 14,5 20 23,8 30,5
Dimension ØDK21,3 26,2 30,5 32,2 45 57,5 69 86
Tightening torque TA[Nm] 0,76 1,34 2,9 1,34 10 10 25 49
Bore Ø
transmittable torque of clamping hub [Nm]
Surface pressure [N/mm2]
0,8
Ø3 173,5
0,9 1,9 3,4
Ø4 105,1 151,6 273,6
1,0 2,0 3,6 7,1
Ø5 72,1 102,6 183,6 262,2
1,0 2,1 3,7 7,4
Ø6 53,4 75,1 133,4 189,6
1,1 2,2 3,9 7,7
Ø7 41,7 58 102,3 144,8
2,3 4,1 8,0 24,3
Ø8 46,6 81,7 115,1 191,8
2,4 4,2 8,2 25,0
Ø9 38,6 67,2 94,3 155,7
4,4 8,5 25,7 21,2
Ø10 56,5 79,1 129,5 82,3
4,6 8,8 26,3 23,3
Ø11 48,5 67,6 109,9 74,8
4,7 9,1 27,0 25,4
Ø12 42,2 58,7 94,7 68,6
5,5 28,4 29,7 54,4
Ø14
26,0 73,1 58,8 92,0
5,7 29,0 31,8 58,3 92,6
Ø15
23,3 65,2 54,9 85,9 109,6
5,8 29,7 33,9 62,2 98,8
Ø16
21,1 58,6 51,4 80,5 102,7
31,1 38,2 70,0 111,1
Ø18 34,4 45,7 71,5 91,3
31,7 40,3 73,9 117,3
Ø19 31,6 43,3 67,8 86,5
32,4 42,4 77,8 123,5
Ø20 29,1 41,1 64,4 82,2
24,0 46,7 85,5 135,8
Ø22
25 37,4 58,5 74,7
25,0 50,9 93,3 148,2
Ø24
21,9 34,3 53,7 68,5
53,0 97,2 154,3
Ø25 32,9 51,5 65,8
59,4 108,9 172,9
Ø28 29,4 46,0 58,7
63,6 116,6 185,2
Ø30 27,4 42,9 54,8
67,9 124,4 197,5
Ø32 25,7 40,2 51,4
136,1 216,1
Ø35 36,8 47,0
234,6
Ø38 43,3
246,9
Ø40 41,1
259,3
Ø42 39,1
277,8
Ø45 36,5
= ROTEX®GS 14: 1 x clamping screw M3, TA= 1,34 Nm
ROTEX®GS 19: 1 x clamping screw M5, TA= 6 Nm

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
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2 Hints
The ROTEX®GS coupling was developped for a backlash-
free power transmission and easy plug-in assembly. This
backlash-free power transmission is realized in the range
of prestress (see illustration 9). 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 9: 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
three different kinds of Shore hardness, injected in different colours, either as a torsionally soft or hard material.
2.1 Coupling Selection
!
CAUTION!
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 KTR Kupplungstechnik GmbH.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
14 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
2 Hints
2.3 Safety and Advice Hints
STOP
DANGER! Dangerofinjurytopersons
! CAUTION! Damagesonthemachinepossible
)A T T E N T I O N ! Pointing to important items
A T T E N T I O N ! Pointing to explosion-proof applications
2.4 General Hint to Danger
STOP
DANGER!
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 9, 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.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
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14
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ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
3 Storage
The couplings are supplied in preserved condition and can be stored in a dry place with a roof up to 6 – 9
months.
With favourable storage conditions the coupling spiders (elastomers) keep their characteristics unchanged up to
5 years.
!
CAUTION!
The storage rooms must not contain any equipment producing ozone, e. g. fluorescent light
sources, mercury lamps, electric high-voltage devices. Humid storage rooms are not
suitable.
Please make sure that no condensation is produced. It is best to keep the relative air
moisture beneath 65 %.
4 Assembly
Generally the coupling is delivered in parts. Before the assembly, the coupling has to be inspected regarding its
completeness.
4.1 Hub Types
Type
1.0 with keyway and
thread
1.1 without keyway
with thread
1.2 without keyway
without thread
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 with ROTEX®GS Compact from
size 24 standard
2.8 axially slotted without keyway
2.9 axially slotted with keyway
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)
Please note: Subject to the position of the
clamping screws the application is
recommended for single-cardanic couplings
only.
illustration 10: Hub types
1) )ATTENTION!
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.
ATTENTION!
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.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
16 of 33
14
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ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
4 Assembly
4.2 Coupling Components
Standard spiders
Spider hardness
(Shore)
Identification
(Colour)
Spider hardness
(Shore)
Identification
(Colour)
80 Sh A-GS blue green size 7 - 38
92 Sh A-GS yellow 64 Sh D-GS pale green size 42 - 75
95/98 Sh A-GS red 72 Sh D-GS grey size 24 - 55
Components of ROTEX®GS, backlash-free shaft couplings
Component Quantity Description
1 2 hub
2 1 spider
3 2 setscrew DIN EN ISO 4029
illustration 11: ROTEX®GS, size 5 - 38 illustration 12: ROTEX®GS, size 42 - 75
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 screws DIN EN ISO 4762
illustration 13: ROTEX®GS, clamping hub

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
17 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
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 screws DIN EN ISO 4762
illustration 14: ROTEX®GS, clamping ring hub
)ATTENTION!
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.
Components of ROTEX®GS, DKM
Component Quantity Description
1 2 hub
2 2 spider
3 1 DKM spacer
4 2 setscrew DIN EN ISO 4029
illustration 15: ROTEX®GS, DKM

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
18 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
4 Assembly
4.2 Coupling Components
Components of ROTEX®GS Compact, clamping hubs
Component Quantity Description
1 2 clamping hub (hub types 2.0, 2.1, 2.8 or 2.9)
2 1 spider
3 2 / 4 cap screws DIN EN ISO 4762
illustration 16: ROTEX®GS Compact, size 7 - 19 illustration 17: ROTEX®GS Compact, size 24 - 38
ATTENTION!
Hub types 1.1, 2.0, 2.5, 2.8, 7.5 and 7.8 (without feather key) may be used in category 3 only.
)ATTENTION!
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.
4.3 Hints for Assembly
Subject to its type ROTEX®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. Optimol Optisit WX) or vaseline have proven their worth, too.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
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14
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4 Assembly
4.4 Hint for Finish Bore
STOP
DANGER!
The maximum permissible bore diameters d (see tables 1
to 10 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 illustration
18) has to be observed.
•Please make absolutely sure to observe the figures for
Ødmax..
•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 18: accuracy in concentric
running or run-out
!
CAUTION!
The customer is responsible for all machinings made subsequently to unbored or pilot
bored and to finish machined coupling parts and spare parts. KTR does not assume any
warranty claims resulting from insufficient machining.
ATTENTION!
Any mechanical remachining on couplings which are to be used in hazardous areas
requires an explicit release by KTR.
The customer has to provide KTR with a production drawing which the production is based
on. KTR will investigate this drawing and return it to the customer along with a
corresponding approval note.
KTR will supply unbored or pilot bored coupling components and spare parts on special
request by the customer only. Such components are marked with the symbol
additionally.
Table 11: Setscrews DIN EN ISO 4029
ROTEX®GS
Size 5 7 9 12 14 19 24 28 38 42 48 55 65 75
Dimension G M2 M3 M4 M4 M4 M5 M5 M8 M8 M8 M8 M10 M10 M10
Tightening
torque TA[Nm] - - 1,5 1,5 1,5 2 2 10 10 10 10 17 17 17

KTR Kupplungstechnik
GmbH
D-48407 Rheine
ROTEX®GS
Operating/mounting instructions
KTR-N
sheet:
edition:
45510 EN
20 of 33
14
Gezeichnet: 08.02.12 Kb/De Ersatz für: KTR-N vom 18.08.11Schutzvermerk
ISO 16016 beachten. Geprüft: 08.02.12 Kb Ersetzt durch:
4 Assembly
4.5 Assembly of Hubs (Types 1.0, 1.1 and 1.2)
)ATTENTION!
We recommend to check bores, shaft, keyway and feather key for dimensional accuracy
before assembly.
Before mounting preservatives have to be removed from the bores. Moreover, the shaft ends have to be cleaned
carefully, too.
!
CAUTION!
Please note the manufacturer’s instructions regarding the use of detergents.
If the hubs are sligthly heated (approx. 80 °C) they can be assembled onto the shaft more easily.
ATTENTION!
Please note the danger of ignition in hazardous areas.
STOP
DANGER!
Touching the heated hubs causes burns. For that reason we recommend to wear safety
gloves.
!
CAUTION!
Please observe the dimension E (see tables 1 to 9) for the assembly to make sure that the
spider can be moved axially during the operation. The coupling may be damaged if this
recommendation is not followed.
•Please assemble the hubs onto the shaft of driving and driven side.
•Please shift the power pack into axial direction until the dimension E is reached.
•If the power packs have already been mounted firmly, the dimension E has to be adjusted by shifting the hubs
on the shafts axially.
•Secure the hubs by tightening the setscrews DIN EN ISO 4029 at the tightening torques TAmentioned in
table 10.
)ATTENTION!
If the shaft diameters with inserted feather key fall below the dimension dHof the spider
(see tables 1 to 10), one or both shaft ends may protude into the spider.
!
CAUTION!
Hub type 1.1 (without feather key) may be used in category 3 only.