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Introduction

1.4 Copyright

14 Edition 09/2022 M3560-02en

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Table of Contents3
Introduction11
Legal Information11
About These Instructions12
Text Attributes12
Copyright13
Safety Information15
General Information15
Table 2-1 General Warnings16
Intended Use17
Safety Information for a Coupling When Used in Potentially Explosive Atmospheres17
Marking17
Conditions of Use18
Table 2-2 Temperature Classes for Explosive Atmospheres as a Result of Gases, Vapours or Mists18
General Warning Notices19
Description21
Figure 3-1 ZNN, ZNNA, ZNZS, ZNZA, ZNNV and ZNZV Types22
Application Planning23
Transport of the Coupling23
Storage of the Coupling23
Figure 4-1 Transport Symbols23
Table 4-1 Types of Preservative Agents for Long-Term Storage24
Assembly25
Preparatory Work25
Mill the Finished Bore26
Table 5-1 Recommended Assigned Fits for Bores with Parallel Key Connection26
Mill the Parallel Keyway27
Machining an Axial Locking Mechanism27
Figure 5-1 Tolerances for the Finished Bore in Coupling Part 1 (1) or 2 (2)27
Figure 5-2 Diameter and Axial Position of the Threaded Hole in the Hub28
Table 5-2 Diameter and Axial Position of the Threaded Hole, Tightening Torque and Width A/F29
Balancing the Coupling30
Mounting the Coupling30
Figure 5-3 Position of the Balancing Bore for Two-Plane Balancing30
Assembling Coupling Parts with Shaft-Hub Connection Using a Parallel Key31
Assembling Coupling Parts with Shaft-Hub Connection Using a Pressurised Oil Interference Fit32
Assembling the Coupling33
Aligning the Coupling33
Purpose of Alignment33
Possible Misalignment34
Axial Misalignment34
Angular Misalignment34
Figure 5-4 Possible Misalignment34
Radial Misalignment35
Angular and Radial Misalignment35
Fill with Lubricant36
Lubricant36
Filling Quantity37
Fill with Lubricant38
Table 5-3 Grease Filling Quantity38
Figure 5-5 Fill with Lubricant38
Commissioning39
Operation41
Normal Operation of the Coupling41
Fault - Causes and Correction41
Procedure in the Event of Faults41
Identifying the Fault Cause41
Possible Faults42
Possible Causes43
Unsuitable Coupling43
Assembly-Related Causes43
Table 7-1 Table of Faults43
Maintenance-Related Causes44
Specific Assembly-Related and Maintenance-Related Causes44
Resolving Faults44
Resolving Lubricant Shortage44
Correcting the Changed Alignment45
Maintenance47
Maintenance Intervals47
Lubricant Replacement47
Table 8-1 Operating Temperatures, Operating Hours and Years of Use47
Replacing O-Rings48
Figure 8-1 Draining the Lubricant48
Dismantling the Coupling49
Dismantling Coupling Part 1 (1) or 2 (2) with Shaft-Hub Connection Using a Parallel Key49
Dismantling Coupling Part 1 (1) or 2 (2) with Shaft-Hub Connection Using Pressurised Oil Interference Fit50
Service and Support53
Contact53
Disposal55
Replacement Parts57
Ordering Replacement Parts57
Spare Parts Drawing and Spare Parts List58
Spare Parts List58
Table 11-1 Spare Parts List for ZNN, ZNNA, ZNNV, ZNZS, ZNZA and ZNZV Types58
Spare Parts Drawing for ZNN, ZNNA, ZNNV, ZNZS, ZNZA and ZNZV Types59
Figure 11-1 Spare Parts Drawing for ZNN, ZNNA, ZNNV, ZNZS, ZNZA and ZNZV Types59
Screw Plug60
Figure 11-2 Screw Plug (22)60
Technical Specifications61
Speeds, Geometry Data and Weights61
Dimension Drawing for ZNN and ZNNA Types61
Figure A-1 Dimension Drawing for ZNN Types61
Dimension Drawing for ZNZS and ZNZA Types62
Figure A-2 Dimension Drawing for ZNNA Types62
Figure A-3 Dimension Drawing for ZNZS Types62
Dimension Drawing for ZNNV Types63
Figure A-4 General ZNZA Illustration63
Dimension Drawing for ZNZV Types64
Figure A-5 ZNNV Type64
Figure A-6 ZNZV Type65
Dimension Table66
Clearance S66
Table A-1 Speeds, Geometry Data and Weights for Coupling Sizes 83 to 42466
Distances between Teeth VA and Recommended Alignment Values for Angular and Radial Misalignment67
Table A-2 Clearance S67
Tightening Torques and Widths A/F68
Table A-3 Distances between Teeth VA and Recommended Alignment Values for Radial and Angular Misalignment68
Tightening Procedure69
O-Rings69
Use and Storage of the O-Rings (12)69
Table A-4 Tightening Torques and Widths A/F69
Table A-5 Tightening Procedure69
O-Rings70
Table A-6 O-Rings70
Declaration of Conformity71

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