KTR ROTEX Operating/Mounting Instructions
KTR ROTEX is a torsionally flexible jaw coupling designed to compensate for shaft misalignment caused by manufacturing inaccuracies or thermal expansion. This type of coupling is ideal for use with various industrial machinery and equipment. Equipped with a replaceable spider, you can replace a coupling without disassembling the entire machine. Whether you're using it for a standard application or in potentially explosive atmospheres, the ROTEX offers a robust and reliable solution.
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ROTEX®
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
1 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
ROTEX®
Torsionally flexible jaw couplings type SH
and their combinations
according to directive 2014/34/EU and UK directive SI 2016 No. 1107
Type SH
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
1 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
ROTEX®
Torsionally flexible jaw couplings type SH
and their combinations
according to directive 2014/34/EU and UK directive SI 2016 No. 1107
Type SH
ROTEX®
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
2 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
ROTEX® is a torsionally flexible jaw coupling. It is able to compensate for shaft misalignment, for exa-
mple caused by manufacturing inaccuracies, thermal expansion, etc.
Type SH allows to replace a spider/coupling without having to disassemble the driving resp. driven ma-
chine.
1 Technical data 3
2 Advice 6
2.1 General advice 6
2.2 Safety and advice symbols 6
2.3 General hazard warnings 6
2.4 Intended use 7
2.5 Coupling selection 7
2.6 Reference to EC Machinery Directive 2006/42/EC 7
3 Storage, transport and packaging 8
3.1 Storage 8
3.2 Transport and packaging 8
4 Assembly 8
4.1 Components of the coupling 8
4.2 Advice for finish bore 9
4.3 Assembly of the coupling (general) 10
4.4 Assembly of the hubs (axial assembly) 10
4.5 Assembly of the hubs (radial assembly) 11
4.6 Disassembly of the hubs 12
4.7 Displacements - alignment of the couplings 13
5 Start-up 14
6 Breakdowns, causes and elimination 16
7 Disposal 18
8 Maintenance and service 18
9 Spares inventory, customer service addresses 18
10 Enclosure A Advice and instructions regarding the use in potentially explosive
atmospheres 19
10.1 Intended use in potentially explosive atmospheres 20
10.2 Inspection intervals for couplings in potentially explosive atmospheres 21
10.3 Standard values of wear 22
10.4 marking of coupling for potentially explosive atmospheres 23
10.5 EU Certificate of conformity 25
10.6 UK Declaration of conformity 26
Table of contents
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
2 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
ROTEX® is a torsionally flexible jaw coupling. It is able to compensate for shaft misalignment, for exa-
mple caused by manufacturing inaccuracies, thermal expansion, etc.
Type SH allows to replace a spider/coupling without having to disassemble the driving resp. driven ma-
chine.
1 Technical data 3
2 Advice 6
2.1 General advice 6
2.2 Safety and advice symbols 6
2.3 General hazard warnings 6
2.4 Intended use 7
2.5 Coupling selection 7
2.6 Reference to EC Machinery Directive 2006/42/EC 7
3 Storage, transport and packaging 8
3.1 Storage 8
3.2 Transport and packaging 8
4 Assembly 8
4.1 Components of the coupling 8
4.2 Advice for finish bore 9
4.3 Assembly of the coupling (general) 10
4.4 Assembly of the hubs (axial assembly) 10
4.5 Assembly of the hubs (radial assembly) 11
4.6 Disassembly of the hubs 12
4.7 Displacements - alignment of the couplings 13
5 Start-up 14
6 Breakdowns, causes and elimination 16
7 Disposal 18
8 Maintenance and service 18
9 Spares inventory, customer service addresses 18
10 Enclosure A Advice and instructions regarding the use in potentially explosive
atmospheres 19
10.1 Intended use in potentially explosive atmospheres 20
10.2 Inspection intervals for couplings in potentially explosive atmospheres 21
10.3 Standard values of wear 22
10.4 marking of coupling for potentially explosive atmospheres 23
10.5 EU Certificate of conformity 25
10.6 UK Declaration of conformity 26
Table of contents
ROTEX®
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
3 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
Illustration 1: ROTEX® type SH (material: Sint)
Table 1: Dimensions - Material sintered steel (Sint)
Size
Dimensions in mm
Finish bore D
1) General Cap screws DIN EN ISO 4762
min. Max. L L1, L2 E B1 S DH DI1 DK K W MxLM A1 TA
in Nm
24 0 28 78 30 18 14 2.0 55 27 57.5 20 12 M6x20 15.0 14
28 0 38 90 35 20 15 2.5 65 30 73.0 25 12 M8x25 17.5 35
1) Maximum torque of the coupling TKmax. = Rated torque of the coupling TKN x 2
Table 2: Torques and setscrews - Material sintered steel (Sint)
Size
Spider 2) (component 2)
Rated torque in Nm Setscrew DIN EN ISO 4029
92 ShA 98 ShA 64 ShD G T TA in Nm
24 35 60 - M5 10 2
28 95 160 - M8 15 10
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and setscrew
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).
With frictionally engaged connections the tolerance of the bore depends on the shaft.
Respective fit pairs have to be calculated by KTR beforehand.
Clamping hubs (SPLIT hubs) without feather keyways may be used in category 3 only and
are marked with category 3 accordingly.
1 Technical data
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
3 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
Illustration 1: ROTEX® type SH (material: Sint)
Table 1: Dimensions - Material sintered steel (Sint)
Size
Dimensions in mm
Finish bore D
1) General Cap screws DIN EN ISO 4762
min. Max. L L1, L2 E B1 S DH DI1 DK K W MxLM A1 TA
in Nm
24 0 28 78 30 18 14 2.0 55 27 57.5 20 12 M6x20 15.0 14
28 0 38 90 35 20 15 2.5 65 30 73.0 25 12 M8x25 17.5 35
1) Maximum torque of the coupling TKmax. = Rated torque of the coupling TKN x 2
Table 2: Torques and setscrews - Material sintered steel (Sint)
Size
Spider 2) (component 2)
Rated torque in Nm Setscrew DIN EN ISO 4029
92 ShA 98 ShA 64 ShD G T TA in Nm
24 35 60 - M5 10 2
28 95 160 - M8 15 10
2) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and setscrew
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).
With frictionally engaged connections the tolerance of the bore depends on the shaft.
Respective fit pairs have to be calculated by KTR beforehand.
Clamping hubs (SPLIT hubs) without feather keyways may be used in category 3 only and
are marked with category 3 accordingly.
1 Technical data
ROTEX®
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
4 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
Illustration 2: ROTEX® type SH, size 38 - 55 (material: GJL)
Table 3: Dimensions - Material cast iron (GJL)
Size
Dimensions in mm
Finish bore D
1) General Cap screws DIN EN ISO 4762
min. Max. L L1,
L2 E B1 S DH DI1 DN1 DK N K W MxLM A1 TA
in Nm
38 24 45 114 45 24 18 3.0 80 38 78 83.5 37 30 15 M8x30 22.5 34
42 24 55 126 50 26 20 3.0 95 46 94 97.0 40 30 15 M10x35 25.0 67
48 24 60 140 56 28 21 3.5 105 51 104 108.5 45 35 15 M12x40 28.0 115
55 24 70 160 65 30 22 4.0 120 60 118 122.0 52 40 15 M12x45 32.5 115
65 24 70 185 75 35 26 4.5 135 68 115 123.5 61 45 15 M12x40 37.5 115
70 80 135 132.5 50 M12x45
75 40 80 210 85 40 30 5.0 160 80 135 147.0 69 51 20 M16x50 42.5 290
80 90 160 158.0 57
90 40 90 245 100 45 34 5.5 200 100 160 176.0 81 60 30 M20x60 50.0 560
90 110 200 197.0 72
1) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and setscrew
Table 4: Torques and setscrews - Material cast iron (GJL)
Size
Spider 2) (component 2)
Rated torque in Nm Setscrew DIN EN ISO 4029
92 ShA 98 ShA 64 ShD G T TA in Nm
38 190 325 405
M8
15
1042 265 450 560
20
48 310 525 655
55 410 685 825
M10 1765 625 940 1175
75 1280 1920 2400 25
90 2400 3600 4500 M12 30 40
2) Maximum torque of the coupling TKmax. = Rated torque of the coupling TKN x 2
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).
With frictionally engaged connections the tolerance of the bore depends on the shaft.
Respective fit pairs have to be calculated by KTR beforehand.
Clamping hubs (SPLIT hubs) without feather keyways may be used in category 3 only and
are marked with category 3 accordingly.
1 Technical data
Operating/Assembly instructions
Type SH
KTR-N
Sheet:
Edition:
40229 EN
4 of 26
8
Please observe protection
note ISO 16016.
Drawn: 2023-03-02 Ka/Bru Replacing: KTR-N dated 2022-07-22
Verified: 2023-03-08 Ka Replaced by:
Illustration 2: ROTEX® type SH, size 38 - 55 (material: GJL)
Table 3: Dimensions - Material cast iron (GJL)
Size
Dimensions in mm
Finish bore D
1) General Cap screws DIN EN ISO 4762
min. Max. L L1,
L2 E B1 S DH DI1 DN1 DK N K W MxLM A1 TA
in Nm
38 24 45 114 45 24 18 3.0 80 38 78 83.5 37 30 15 M8x30 22.5 34
42 24 55 126 50 26 20 3.0 95 46 94 97.0 40 30 15 M10x35 25.0 67
48 24 60 140 56 28 21 3.5 105 51 104 108.5 45 35 15 M12x40 28.0 115
55 24 70 160 65 30 22 4.0 120 60 118 122.0 52 40 15 M12x45 32.5 115
65 24 70 185 75 35 26 4.5 135 68 115 123.5 61 45 15 M12x40 37.5 115
70 80 135 132.5 50 M12x45
75 40 80 210 85 40 30 5.0 160 80 135 147.0 69 51 20 M16x50 42.5 290
80 90 160 158.0 57
90 40 90 245 100 45 34 5.5 200 100 160 176.0 81 60 30 M20x60 50.0 560
90 110 200 197.0 72
1) Bores H7 with keyway to DIN 6885 sheet 1 [JS9] and setscrew
Table 4: Torques and setscrews - Material cast iron (GJL)
Size
Spider 2) (component 2)
Rated torque in Nm Setscrew DIN EN ISO 4029
92 ShA 98 ShA 64 ShD G T TA in Nm
38 190 325 405
M8
15
1042 265 450 560
20
48 310 525 655
55 410 685 825
M10 1765 625 940 1175
75 1280 1920 2400 25
90 2400 3600 4500 M12 30 40
2) Maximum torque of the coupling TKmax. = Rated torque of the coupling TKN x 2
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).
With frictionally engaged connections the tolerance of the bore depends on the shaft.
Respective fit pairs have to be calculated by KTR beforehand.
Clamping hubs (SPLIT hubs) without feather keyways may be used in category 3 only and
are marked with category 3 accordingly.
1 Technical data
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
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Key Features
- Torsionally flexible
- Shaft misalignment compensation
- Replaceable spider
- Potentially explosive atmosphere compatible
- Easy assembly/disassembly
Related manuals
Frequently Answers and Questions
How do I replace the spider?
You can replace the spider without disassembling the driving or driven machine. Refer to the assembly and disassembly instructions in the manual for detailed steps.
What is the maximum permissible bore diameter?
The maximum permissible bore diameters are listed in the technical data section of the manual. Exceeding these limits can damage the coupling.
What are the displacement figures for different speeds?
The displacement figures for different speeds are provided in tables 8 and 9 of the manual. Make sure to carefully observe these figures to ensure a long service life for the coupling.
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