KTR ROTEX Operating/Mounting Instructions
KTR ROTEX is a torsionally flexible jaw coupling, designed to compensate for shaft misalignment, for example caused by manufacturing inaccuracies, thermal expansion, etc. The ROTEX® types ZS-DKM, ZS-DKM-H and ZS-DKM-SH allow for larger radial displacements. The standard series can be used with horizontal mounting only. The coupling is suitable and approved for the use in potentially explosive atmospheres. These instructions are part of your product - please store them carefully.
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ROTEX® Type ZS-DKM,
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
1 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
ROTEX®
Torsionally flexible jaw-type coup-
lings
ZS-DKM,
ZS-DKM-H,
ZS-DKM-SH
and their combinations
according to directive 2014/34/EU
and UK directive SI 2016 No. 1107
Type ZS-DKM1
Type ZS-DKM3
Type ZS-DKM-H
Type ZS-DKM-SH (with split hubs)
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
1 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
ROTEX®
Torsionally flexible jaw-type coup-
lings
ZS-DKM,
ZS-DKM-H,
ZS-DKM-SH
and their combinations
according to directive 2014/34/EU
and UK directive SI 2016 No. 1107
Type ZS-DKM1
Type ZS-DKM3
Type ZS-DKM-H
Type ZS-DKM-SH (with split hubs)
ROTEX® Type ZS-DKM,
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
2 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
ROTEX® is a torsionally flexible jaw coupling. It is able to compensate for shaft misalignment, for example caused
by manufacturing inaccuracies, thermal expansion, etc. Subject to their double-cardanic structure ROTEX® types
ZS-DKM, ZS-DKM-H and ZS-DKM-SH allow to compensate for larger radial displacements. The standard series
can be used with horziontal mounting only.
1 Technical data 3
2 Advice 7
2.1 General advice 7
2.2 Safety and advice symbols 7
2.3 General hazard warnings 7
2.4 Intended use 8
2.5 Coupling selection 8
2.6 Reference to EC Machinery Directive 2006/42/EC 8
3 Storage, transport and packaging 9
3.1 Storage 9
3.2 Transport and packaging 9
4 Assembly 9
4.1 Components of the coupling 9
4.2 Advice for finish bore 11
4.3 Assembly of the coupling (general) 13
4.4 Assembly of type ZS-DKM1 14
4.5 Assembly of type ZS-DKM3 15
4.6 Assembly of type ZS-DKM-H 16
4.7 Assembly of type ZS-DKM-SH (with SPLIT hubs) 17
4.8 Displacements - alignment of the couplings 18
5 Start-up 20
6 Breakdowns, causes and elimination 21
7 Disposal 23
8 Maintenance and service 24
9 Spares inventory, customer service addresses 24
10 Enclosure A Advice and instructions regarding the use in potentially explosive
atmospheres 25
10.1 Intended use in potentially explosive atmospheres 26
10.2 Inspection intervals for couplings in potentially explosive atmospheres 27
10.3 Standard values of wear 28
10.4 marking of coupling for potentially explosive atmospheres 29
10.5 EU Certificate of conformity 31
10.6 UK Declaration of conformity 32
Table of contents
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
2 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
ROTEX® is a torsionally flexible jaw coupling. It is able to compensate for shaft misalignment, for example caused
by manufacturing inaccuracies, thermal expansion, etc. Subject to their double-cardanic structure ROTEX® types
ZS-DKM, ZS-DKM-H and ZS-DKM-SH allow to compensate for larger radial displacements. The standard series
can be used with horziontal mounting only.
1 Technical data 3
2 Advice 7
2.1 General advice 7
2.2 Safety and advice symbols 7
2.3 General hazard warnings 7
2.4 Intended use 8
2.5 Coupling selection 8
2.6 Reference to EC Machinery Directive 2006/42/EC 8
3 Storage, transport and packaging 9
3.1 Storage 9
3.2 Transport and packaging 9
4 Assembly 9
4.1 Components of the coupling 9
4.2 Advice for finish bore 11
4.3 Assembly of the coupling (general) 13
4.4 Assembly of type ZS-DKM1 14
4.5 Assembly of type ZS-DKM3 15
4.6 Assembly of type ZS-DKM-H 16
4.7 Assembly of type ZS-DKM-SH (with SPLIT hubs) 17
4.8 Displacements - alignment of the couplings 18
5 Start-up 20
6 Breakdowns, causes and elimination 21
7 Disposal 23
8 Maintenance and service 24
9 Spares inventory, customer service addresses 24
10 Enclosure A Advice and instructions regarding the use in potentially explosive
atmospheres 25
10.1 Intended use in potentially explosive atmospheres 26
10.2 Inspection intervals for couplings in potentially explosive atmospheres 27
10.3 Standard values of wear 28
10.4 marking of coupling for potentially explosive atmospheres 29
10.5 EU Certificate of conformity 31
10.6 UK Declaration of conformity 32
Table of contents
ROTEX® Type ZS-DKM,
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
3 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
Type ZS-DKM1
Illustration 1: ROTEX® type ZS-DKM1
Table 1: Dimensions - type ZS-DKM1
Size
Spider 1)
(component
2)
TKN
in Nm
Dimensions
in mm
Finish bore
Dmax.
DH DN DI1 L1, L2 S B1 E L7 L6 2) D4
24 35 35 55 - 27 30 2.0 14 18 8 6/9 45
28 95 40 65 - 30 35 2.5 15 20 10 6/9 3) 54
38 190 48 80 66 38 45 3.0 18 24 10 4/9 66
42 265 55 95 75 46 50 3.0 20 26 12 6/9 80
48 310 62 105 85 51 56 3.5 21 28 12 6/9 90
55 410 74 120 98 60 65 4.0 22 30 16 6/9 102
65 625 80 135 115 68 75 4.5 26 35 16 9 116
75 1280 95 160 135 80 85 5.0 30 40 19 9 136
90 2400 110 200 160 100 100 5.5 34 45 20 10 172
100 3300 115 225 180 105 110 6.0 38 50 25 15 195
Size
Dimensions
in mm
Dimension L11 for shaft distance dimension DBSE
in mm
Hexagon screws
DIN EN ISO 4017 - 10.9
LZS-DKM1 100 120 140 160 180 200 250 MxLM Z 4) TA
in Nm
24 DBSE+60 64 84 104 124 144 164 214 M5x14 5) 8 6
28 DBSE+70 60 80 100 120 140 160 3) 210 3) M6x16 8 14
38 DBSE+90 52 72 92 112 132 152 202 M8x18 6) 8 35
42 DBSE+100 - 68 88 108 128 148 198 M8x18 8 35
48 DBSE+112 - 64 84 104 124 144 194 M8x18 8 35
55 DBSE+130 - - 80 100 120 140 190 M10x20 8 69
65 DBSE+150 - - - 90 110 130 180 M10x25 8 69
75 DBSE+170 - - - - 100 120 170 M12x25 10 120
90 DBSE+200 - - - - - 110 160 M16x30 10 295
100 DBSE+220 - - - - - - 150 M16x40 10 295
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2;
size 24 to size 90 - spider type 98 ShA-GS; size 100 - spider type 98 ShA with internal ring
transmittable torque as per 92 ShA-GS
2) Narrow width of flange L6 with min. L11-dimension
3) With shaft distance dimension DBSE = 200 mm and DBSE = 250 mm L6 = 30 mm
4) Per flange connection
5) Property class 8.8
6) M8x12 for DBSE = 100
1 Technical data
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
3 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
Type ZS-DKM1
Illustration 1: ROTEX® type ZS-DKM1
Table 1: Dimensions - type ZS-DKM1
Size
Spider 1)
(component
2)
TKN
in Nm
Dimensions
in mm
Finish bore
Dmax.
DH DN DI1 L1, L2 S B1 E L7 L6 2) D4
24 35 35 55 - 27 30 2.0 14 18 8 6/9 45
28 95 40 65 - 30 35 2.5 15 20 10 6/9 3) 54
38 190 48 80 66 38 45 3.0 18 24 10 4/9 66
42 265 55 95 75 46 50 3.0 20 26 12 6/9 80
48 310 62 105 85 51 56 3.5 21 28 12 6/9 90
55 410 74 120 98 60 65 4.0 22 30 16 6/9 102
65 625 80 135 115 68 75 4.5 26 35 16 9 116
75 1280 95 160 135 80 85 5.0 30 40 19 9 136
90 2400 110 200 160 100 100 5.5 34 45 20 10 172
100 3300 115 225 180 105 110 6.0 38 50 25 15 195
Size
Dimensions
in mm
Dimension L11 for shaft distance dimension DBSE
in mm
Hexagon screws
DIN EN ISO 4017 - 10.9
LZS-DKM1 100 120 140 160 180 200 250 MxLM Z 4) TA
in Nm
24 DBSE+60 64 84 104 124 144 164 214 M5x14 5) 8 6
28 DBSE+70 60 80 100 120 140 160 3) 210 3) M6x16 8 14
38 DBSE+90 52 72 92 112 132 152 202 M8x18 6) 8 35
42 DBSE+100 - 68 88 108 128 148 198 M8x18 8 35
48 DBSE+112 - 64 84 104 124 144 194 M8x18 8 35
55 DBSE+130 - - 80 100 120 140 190 M10x20 8 69
65 DBSE+150 - - - 90 110 130 180 M10x25 8 69
75 DBSE+170 - - - - 100 120 170 M12x25 10 120
90 DBSE+200 - - - - - 110 160 M16x30 10 295
100 DBSE+220 - - - - - - 150 M16x40 10 295
1) Maximum torque of the coupling TKmax. = rated torque of the coupling TK rated x 2;
size 24 to size 90 - spider type 98 ShA-GS; size 100 - spider type 98 ShA with internal ring
transmittable torque as per 92 ShA-GS
2) Narrow width of flange L6 with min. L11-dimension
3) With shaft distance dimension DBSE = 200 mm and DBSE = 250 mm L6 = 30 mm
4) Per flange connection
5) Property class 8.8
6) M8x12 for DBSE = 100
1 Technical data
ROTEX® Type ZS-DKM,
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
4 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
Type ZS-DKM3
Illustration 2: ROTEX® type ZS-DKM3
Table 2: Dimensions - type ZS-DKM3
Size
Spider 1)
(component
2)
TKN
in Nm
Dimensions
in mm
Finish bore
D1max.
DH DN2 D4 DI1 L2 L3 L6 L7
24 35 24 55 36 45 27 30 30.5 10 8
28 95 28 65 42 54 30 35 35.5 12 10
38 190 38 80 52 66 38 45 45.5 12 10
42 265 42 95 62 80 46 50 51.0 13 12
48 310 48 105 70 90 51 56 57.0 13 12
55 410 55 120 80 102 60 65 66.0 15 16
65 625 65 135 94 116 68 75 76.0 15 16
75 1280 75 160 108 136 80 85 86.5 20 19
90 2400 100 200 142 172 100 100 101.5 20 20
Size
Dimensions
in mm
Dimension L11 for shaft distance dimension
DBSE
in mm
Cap screws DIN EN ISO 4762 -
12.9
S B1 E LZS-DKM3 100 140 180 250 MxLM Z 2) TA
in Nm
24 2.0 14 18 DBSE+61 49 - - - M5x16 8 10
28 2.5 15 20 DBSE+71 41 81 - - M6x20 8 17
38 3.0 18 24 DBSE+91 33 73 - - M8x22 8 41
42 3.0 20 26 DBSE+102 26 66 - - M8x25 12 41
48 3.5 21 28 DBSE+114 22 62 - - M8x25 12 41
55 4.0 22 30 DBSE+132 10 50 90 - M10x30 8 83
65 4.5 26 35 DBSE+152 - 40 80 - M10x30 12 83
75 5.0 30 40 DBSE+173 - 25 65 135 M12x40 15 120
90 5.5 34 45 DBSE+203 - - 53 123 M16x40 15 295
1) Maximum torque of the coupling TKmax. = Rated torque of the coupling TKN x 2
Size 24 to 90 spider type 98 ShA-GS
transmittable torque acc. to 92 ShA-GS.
2) Per flange connection
1 Technical data
ZS-DKM-H and ZS-DKM-SH
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40224 EN
4 of 32
11
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-25
Verified: 2023-03-06 Ka Replaced by:
Type ZS-DKM3
Illustration 2: ROTEX® type ZS-DKM3
Table 2: Dimensions - type ZS-DKM3
Size
Spider 1)
(component
2)
TKN
in Nm
Dimensions
in mm
Finish bore
D1max.
DH DN2 D4 DI1 L2 L3 L6 L7
24 35 24 55 36 45 27 30 30.5 10 8
28 95 28 65 42 54 30 35 35.5 12 10
38 190 38 80 52 66 38 45 45.5 12 10
42 265 42 95 62 80 46 50 51.0 13 12
48 310 48 105 70 90 51 56 57.0 13 12
55 410 55 120 80 102 60 65 66.0 15 16
65 625 65 135 94 116 68 75 76.0 15 16
75 1280 75 160 108 136 80 85 86.5 20 19
90 2400 100 200 142 172 100 100 101.5 20 20
Size
Dimensions
in mm
Dimension L11 for shaft distance dimension
DBSE
in mm
Cap screws DIN EN ISO 4762 -
12.9
S B1 E LZS-DKM3 100 140 180 250 MxLM Z 2) TA
in Nm
24 2.0 14 18 DBSE+61 49 - - - M5x16 8 10
28 2.5 15 20 DBSE+71 41 81 - - M6x20 8 17
38 3.0 18 24 DBSE+91 33 73 - - M8x22 8 41
42 3.0 20 26 DBSE+102 26 66 - - M8x25 12 41
48 3.5 21 28 DBSE+114 22 62 - - M8x25 12 41
55 4.0 22 30 DBSE+132 10 50 90 - M10x30 8 83
65 4.5 26 35 DBSE+152 - 40 80 - M10x30 12 83
75 5.0 30 40 DBSE+173 - 25 65 135 M12x40 15 120
90 5.5 34 45 DBSE+203 - - 53 123 M16x40 15 295
1) Maximum torque of the coupling TKmax. = Rated torque of the coupling TKN x 2
Size 24 to 90 spider type 98 ShA-GS
transmittable torque acc. to 92 ShA-GS.
2) Per flange connection
1 Technical data
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Key Features
- Torsionally flexible
- Compensates misalignment
- Suitable for explosive atmospheres
- Available in different types
- Horizontal mounting
Related manuals
Frequently Answers and Questions
What types of ROTEX® couplings are described in the document?
The document covers ROTEX® types ZS-DKM, ZS-DKM-H and ZS-DKM-SH, and their combinations.
What are the main components of the coupling?
The ROTEX® coupling consists of hubs, spiders, driving flanges, spacer and setscrews. The exact components depend on the specific type.
What are the maximum permissible bore diameters?
The maximum permissible bore diameters must not be exceeded. This information is available in the technical data section of the document.
How to align the couplings?
The document recommends using a dial gauge, ruler or feeler to check the permissible displacement figures for accurate shaft alignment.
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