KTR-Group RADEX-N NN Operating & Assembly Instructions
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KTR-Group RADEX-N NN Operating & Assembly Instructions

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RADEX
Steel laminae couplings types
NN, NANA 1 to 4,
NENA 1 and 2, NENE 1,
NNZ, NNW
according to directive 2014/34/EU
and UK directive SI 2016 No. 1107
Please observe protection
note ISO 16016.
RADEX
Operating/Assembly instructions
®
-N
Drawn:
2022-07-06 Pz/Wb
Verified:
2022-08-08 Pz
®
-N
®
RADEX
-N type NN
®
RADEX
-N type NANA 1
®
RADEX
-N type NNZ
®
RADEX
-N type NANA 4
®
RADEX
-N type NNW
Replacing:
Replaced by:
KTR-N
47110 EN
Sheet:
1 of 33
Edition:
26
KTR-N dated 2021-05-04

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  • Page 1 KTR-N 47110 EN ® RADEX Sheet: 1 of 33 Operating/Assembly instructions Edition: ® RADEX Steel laminae couplings types NN, NANA 1 to 4, NENA 1 and 2, NENE 1, ® RADEX -N type NN NNZ, NNW according to directive 2014/34/EU and UK directive SI 2016 No.

  • Page 2: Table Of Contents

    KTR-N 47110 EN ® RADEX Sheet: 2 of 33 Operating/Assembly instructions Edition: ® RADEX -N is a torsionally stiff flexible steel laminae coupling. It is able to compensate for shaft misalignment, for example caused by thermal expansion, etc. Table of contents Technical data Advice General advice...

  • Page 3: Technical Data

    KTR-N 47110 EN ® RADEX Sheet: 3 of 33 Operating/Assembly instructions Edition: Technical data ® ® Illustration 1: RADEX -N type NN Illustration 2: RADEX -N type NANA 1 ® ® Illustration 3: RADEX -N type NANA 2 Illustration 4: RADEX -N type NENA 1 ®...
  • Page 4 KTR-N 47110 EN ® RADEX Sheet: 4 of 33 Operating/Assembly instructions Edition: Technical data Table 1: Types NN - NANA 1 - NANA 2 - NENA 1 - NENE 1 - NENA 2 Max. finish Dimensions [mm] bore [mm] General Size DBSE NANA1 NANA2 NENA1 NENE1 NENA2...
  • Page 5 KTR-N 47110 EN ® RADEX Sheet: 5 of 33 Operating/Assembly instructions Edition: Technical data ® ® Illustration 7: RADEX -N type NNZ Illustration 8: RADEX -N type NANA 3 ® Illustration 9: RADEX -N type NANA 4 ® Illustration 10: RADEX -N type NNW Dimensions of couplings see table 2, sheet 6.
  • Page 6 KTR-N 47110 EN ® RADEX Sheet: 6 of 33 Operating/Assembly instructions Edition: Technical data Table 2: Types NNZ - NANA 3 - NANA 4 - NNW Dimensions [mm] Max. finish bore General Size [mm] DBSE L1, L2 NANA4 NANA4 1) For further dimensions of type NANA 3 (L and DBSE) see table 3. For dimensions of setscrews (dimension G and T) see table 4.

  • Page 7: Advice

    KTR-N 47110 EN ® RADEX Sheet: 7 of 33 Operating/Assembly instructions Edition: Technical data Table 4: Dimensions of setscrews Size Number Z Size As specified by the customer Number Z Table 5: Torque and speed Size 1300 1800 2600 Torque [Nm] 1800 2600 3600...

  • Page 8: Safety And Advice Symbols

    KTR-N 47110 EN ® RADEX Sheet: 8 of 33 Operating/Assembly instructions Edition: Advice 2.2 Safety and advice symbols This symbol indicates notes which may contribute to Warning of potentially explosive preventing bodily injuries or serious bodily injuries that atmospheres may result in death caused by explosion. This symbol indicates notes which may contribute to Warning of personal injury preventing bodily injuries or serious bodily injuries that...

  • Page 9: Coupling Selection

    KTR-N 47110 EN ® RADEX Sheet: 9 of 33 Operating/Assembly instructions Edition: Advice 2.5 Coupling selection For a permanently failure-free operation of the coupling it must be selected according to the selection instructions (according to DIN 740 part 2) for the particular application (see ®...

  • Page 10: Assembly

    KTR-N 47110 EN ® RADEX Sheet: 10 of 33 Operating/Assembly instructions Edition: Assembly The coupling is generally supplied in individual parts. Before assembly the coupling has to be inspected for completeness. 4.1 Components of the coupling ® Components of RADEX -N type NN Component Quantity...
  • Page 11 KTR-N 47110 EN ® RADEX Sheet: 11 of 33 Operating/Assembly instructions Edition: Assembly 4.1 Components of the coupling ® Components of RADEX -N type NNZ Component Quantity Description Component Quantity Description Flange hub see table 6 Spacer sleeve Laminae set see table 6 Washer Spacer see table 6 Hexagon nut/clamping nut...
  • Page 12 KTR-N 47110 EN ® RADEX Sheet: 12 of 33 Operating/Assembly instructions Edition: Assembly 4.1 Components of the coupling ® Components of RADEX -N type NNW Component Quantity Description Component Quantity Description Flange hub see table 6 Spacer sleeve Laminae set see table 6 Washer Intermediate shaft with 2 see table 6 Hexagon nut/clamping nut...

  • Page 13: Advice For Finish Bore

    KTR-N 47110 EN ® RADEX Sheet: 13 of 33 Operating/Assembly instructions Edition: Assembly 4.2 Advice for finish bore The maximum permissible bore diameters D (see STOP chapter 1 - technical data) must not be exceeded. If these figures are disregarded, the coupling may tear.

  • Page 14: Assembly/Disassembly Of Flange Hubs

    KTR-N 47110 EN ® RADEX Sheet: 14 of 33 Operating/Assembly instructions Edition: Assembly 4.3 Assembly/disassembly of flange hubs  We recommend to inspect bores, shaft, keyway and feather key for dimensional accuracy before assembly. Heating the flange hubs lightly (approx. 80 °C) allows for an easier mounting onto the shafts. Pay attention to the ignition risk in potentially explosive atmospheres! Touching the heated hubs causes burns.

  • Page 15: Assembly/Disassembly Of Clamping Ring Hubs

    KTR-N 47110 EN ® RADEX Sheet: 15 of 33 Operating/Assembly instructions Edition: Assembly 4.4 Assembly/disassembly of clamping ring hubs The stiffness and dimensions of the shafts (here specifically hollow shafts) have to be designed in a way that sufficient safety against plastic deformation is provided for (if necessary, consult with company KTR).
  • Page 16 KTR-N 47110 EN ® RADEX Sheet: 16 of 33 Operating/Assembly instructions Edition: Assembly 4.4 Assembly/disassembly of clamping ring hubs Table 8: Tightening torques of clamping screws Size Clamping screws Tightening torque T [Nm] Having started up the coupling, the coupling has to be inspected for damages at regular maintenance intervals and it has to be replaced, if necessary.

  • Page 17: General Advice For Assembly Of Spacer

    KTR-N 47110 EN ® RADEX Sheet: 17 of 33 Operating/Assembly instructions Edition: Assembly 4.5 General advice for assembly of spacer If the coupling is supplied with a transportation lock (optionally), the following has to be observed: The spacer sleeves (steel) have to be removed for further assembly and operation (see illustration 21).

  • Page 18: Vertical Assembly/Disassembly

    KTR-N 47110 EN ® RADEX Sheet: 18 of 33 Operating/Assembly instructions Edition: Assembly 4.6 Vertical assembly/disassembly 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).

  • Page 19: Assembly/Disassembly Of Laminae Sets, Radex

    KTR-N 47110 EN ® RADEX Sheet: 19 of 33 Operating/Assembly instructions Edition: Assembly ® 4.7 Assembly/disassembly of laminae sets, RADEX -N size 20 - 135 With the assembly make sure that the laminae sets are installed free from distortion in axial direction.

  • Page 20: Assembly/Disassembly Of Laminae Sets, Radex

    KTR-N 47110 EN ® RADEX Sheet: 20 of 33 Operating/Assembly instructions Edition: Assembly ® 4.8 Assembly/disassembly of laminae sets, RADEX -N size 136 - 336 and 138 - 338 With the assembly make sure that the laminae sets are installed free from distortion in axial direction.
  • Page 21 KTR-N 47110 EN ® RADEX Sheet: 21 of 33 Operating/Assembly instructions Edition: Assembly ® 4.8 Assembly/disassembly of laminae sets, RADEX -N size 136 - 336 and 138 - 338 pitch 8 pitch 9 pitch 10 pitch 11 Illustration 31: Tightening of pressure screws pitch 8 pitch 9 pitch 10...

  • Page 22: Tightening Torques Of Screw Connections On The Laminae Set

    KTR-N 47110 EN ® RADEX Sheet: 22 of 33 Operating/Assembly instructions Edition: Assembly 4.9 Tightening torques of screw connections on the laminae set Table 11: Tightening torque of screw connections on the laminae set Size Dimension M [mm] Tightening torque T [Nm] Size Dimension M1 [mm]...
  • Page 23 KTR-N 47110 EN ® RADEX Sheet: 23 of 33 Operating/Assembly instructions Edition: Assembly 4.10 Displacements - alignment of the couplings Examples of the displacement combinations specified in illustration 34: Illustration 34: Combinations of displacement Example 1: K = 10% K = 80% K = 10%...

  • Page 24: Start-Up

    KTR-N 47110 EN ® RADEX Sheet: 24 of 33 Operating/Assembly instructions Edition: Start-up Before start-up make absolutely sure that the transport lock (see illustration 21) has been removed. Before start-up of the coupling, inspect the tightening of the setscrews in the flange hubs, the alignment and the distance dimension DBSE and adjust, if necessary, and also inspect all screw connections for the tightening torques specified.

  • Page 25: Breakdowns, Causes And Elimination

    KTR-N 47110 EN ® RADEX Sheet: 25 of 33 Operating/Assembly instructions Edition: Start-up Coating of coupling: If coated (priming, paintings, etc.) couplings are used in potentially explosive atmospheres, the requirements on conductibility and coating thickness must be considered. With paintings up to 200 µm electrostatic load does not have to be expected. If thicker paintings resp.
  • Page 26 KTR-N 47110 EN ® RADEX Sheet: 26 of 33 Operating/Assembly instructions Edition: Breakdowns, causes and elimination Hazard notes for Breakdowns Causes potentially explosive Elimination atmospheres 1) Set the unit out of operation 2) Eliminate the reason for the misalignment (e. g. loose foundation bolts, fracture of the Misalignment none engine mount, heat expansion of unit...

  • Page 27: Disposal

    KTR-N 47110 EN ® RADEX Sheet: 27 of 33 Operating/Assembly instructions Edition: Disposal In respect of environmental protection we would ask you to dispose of the packaging resp. products on termination of their service life in accordance with the legal regulations resp. standards that apply. All coupling components consist of metal.

  • Page 28: Enclosure A

    KTR-N 47110 EN ® RADEX Sheet: 28 of 33 Operating/Assembly instructions Edition: Enclosure A Advice and instructions regarding the use in potentially explosive atmospheres Types available: NN, NANA 1 to 4, NENA 1 and 2, NENE 1, NNZ, NNW and MK each with flange hubs and each with laminae sets type with 8 pins and closed circular laminae as well as assembly with KTR clamping nuts.

  • Page 29: Inspection Intervals For Couplings In Potentially Explosive Atmospheres

    KTR-N 47110 EN ® RADEX Sheet: 29 of 33 Operating/Assembly instructions Edition: Enclosure A Advice and instructions regarding the use in potentially explosive atmospheres 10.2 Inspection intervals for couplings in potentially explosive atmospheres Equipment category Inspection intervals For couplings operated in zone 2 or zone 22 the inspection and maintenance intervals of the usual operating/assembly instructions for standard operation apply.

  • Page 30: Marking Of Coupling For Potentially Explosive Atmospheres

    KTR-N 47110 EN ® RADEX Sheet: 30 of 33 Operating/Assembly instructions Edition: Enclosure A Advice and instructions regarding the use in potentially explosive atmospheres 10.3 marking of coupling for potentially explosive atmospheres ® The explosion protection marking of the RADEX -N coupling is applied on the outer sheath or on the front side.
  • Page 31 KTR-N 47110 EN ® RADEX Sheet: 31 of 33 Operating/Assembly instructions Edition: Enclosure A Advice and instructions regarding the use in potentially explosive atmospheres 10.3 marking of coupling for potentially explosive atmospheres Comments on marking Equipment group I Mining Equipment group II Non-mining Equipment category 2G Equipment ensuring a high level of safety, suitable for zone 1...

  • Page 32: Eu Declaration Of Conformity

    KTR-N 47110 EN ® RADEX Sheet: 32 of 33 Operating/Assembly instructions Edition: Enclosure A Advice and instructions regarding the use in potentially explosive atmospheres 10.4 EU Declaration of conformity EU Declaration of Conformity resp. Certificate of Conformity corresponding to EU directive 2014/34/EU dated 26 February 2014 and to the legal regulations adopted for its implementation The manufacturer - KTR Systems GmbH, Carl-Zeiss-Str.

  • Page 33: Declaration Of Conformity

    KTR-N 47110 EN ® RADEX Sheet: 33 of 33 Operating/Assembly instructions Edition: Enclosure A Advice and instructions regarding the use in potentially explosive atmospheres 10.5 UK Declaration of conformity UK Declaration of Conformity resp. Certificate of Conformity corresponding to UK directive SI 2016 No. 1107 dated 26 February 2014 and to the legal provisions adopted for its implementation The manufacturer - KTR Systems GmbH, Carl-Zeiss-Str.

This manual is also suitable for:

Radex-n nana 1Radex-n nnzRadex-n nana 4Radex-n nnw

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