This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified
personnel are those who, based on their training and experience, are capable of identifying risks and avoiding
potential hazards when working with these products/systems.
Proper use of Flender products
Note the following:
WARNING
Flender products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Flender. Proper transport, storage, installation, assembly, commissioning, operation and maintenance
are required to ensure that the products operate safely and without any problems. The permissible ambient
conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Flender GmbH. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in
this publication is reviewed regularly and any necessary corrections are included in subsequent editions.
8.4Removing coupling part N (1)................................................................................................41
8.5Removing coupling part G (2), C (3), H (4) or K (5)...............................................................42
8.6Removing coupling part S (6).................................................................................................42
9Service and support....................................................................................................................................43
A.5.1Use and storage of the cam rings..........................................................................................64
A.5.2BIPEX-S cam ring (20)...........................................................................................................64
Tables
Table 4-1Types of preservative agents for long-term storage....................................................................24
BIPEX-S 3410en
6Operating Instructions 10/2017
Page 7
Table of contents
Table 7-1Table of faults..............................................................................................................................34
These instructions describe the coupling and provide information about its handling - from
assembly to maintenance. Please keep these instructions for later use.
Please read these instructions prior to handling the coupling and follow the information in them.
1.2Text attributes
The warning notice system is explained on the back of the inner cover. Always follow the safety
information and notices in these instructions.
In addition to the warning notices, which have to be observed without fail, you will find the
following text attributes in these instructions:
1. Procedural instructions are shown as a numbered list. Always perform the steps in the order
given.
● Lists are formatted as bulleted lists.
– The dash is used for lists at the second level.
1
(1) Numbers in brackets are part numbers.
Note
A note is an important item of information about the product, the handling of the product or the
relevant section of the instructions. The note provides you with help or further suggestions/
ideas.
1.3Copyright
The copyright for these instructions is held by Flender.
These instructions must not be used wholly or in parts without our authorisation or be given to
third parties.
If you have any technical queries, please contact our factory or one of our service outlets (refer
to Service and support (Page 43)).
BIPEX-S 3410en
Operating Instructions 10/20179
Page 10
Introduction
1.3 Copyright
BIPEX-S 3410en
10Operating Instructions 10/2017
Page 11
Safety instructions
2.1General information
Instructions
These instructions are part of the delivery. Always keep these instructions close to the coupling.
Please make sure that every person who is commissioned to work on the coupling has read
and understood these instructions prior to handling the coupling and observes all of the points.
Only the knowledge of these instructions can avoid faults on the coupling and ensure fault-free
and safe operation. Non-adherence to the instructions can cause product or property damage
or personal injury. Flender does not accept any liability for damage or operating failures that
are due to non-adherence to these instructions.
State of the art
The coupling described here has been designed in consideration of the latest findings for
demanding technical requirements. This coupling is state-of-the-art at the time of printing these
instructions.
In the interest of further development, Flender reserves the right to make such changes to the
individual components and accessories that increase performance and safety whilst
maintaining the essential features.
2
Symbols
ISOANSIWarning
Warning - hazardous electrical voltage
---Warning - entanglement hazard
---Warning - hot surfaces
---Warning - substances that are harmful to health or are irritants
The couplings described here are “components” in accordance with the Machinery Directive
and do not require a declaration of incorporation.
Protective clothing
In addition to the generally prescribed personal protective equipment (safety shoes, overalls,
helmet, etc.), also wear suitable safety gloves and safety goggles when handling the coupling.
Using the coupling
The relevant work safety and environmental protection regulations must be complied with at
all times during transport, assembly, installation, dismantling, operation and maintenance of
the coupling.
Only qualified personnel may operate, assemble, maintain and repair the coupling. Information
about qualified personnel can be found in the legal notes at the beginning of these instructions.
If lifting gear or load suspension devices are used for transporting, these have to be suitable
for the weight of the coupling.
If the coupling has visible damage, it may not be assembled or put into operation.
The coupling may only be operated in a suitable housing or with touch protection according to
applicable standards. This also applies to test runs and rotational direction checks.
Work on the coupling
Only carry out work on the coupling when it is not in operation and is not under load.
Secure the drive unit against being switched on accidentally. Attach a notice to the switch
stating clearly that work is being carried out on the coupling. Ensure that the entire unit is not
under load.
2.2Intended use
Only use the coupling according to the conditions specified in the service and delivery contract
and the technical data in the annex. Deviating operating conditions are considered improper
use. The user or owner of the machine or plant is solely liable for any resulting damage.
BIPEX-S 3410en
12Operating Instructions 10/2017
Page 13
When using the coupling please specifically observe the following:
● Do not make any modifications to the coupling that go beyond the permissible machining
described in these instructions. This also applies to touch protection facilities.
● Only use original spare parts from Flender. Flender only accepts liability for original spare
parts from Flender.
Other spare parts are not tested and approved by Flender. Non-approved spare parts may
possibly change the design characteristics of the coupling and thus impact active and/or
passive safety.
Flender will accept no liability or warranty whatsoever for damage occurring as a result of
the use of non-approved spare parts. The same applies to any accessories that were not
supplied by Flender.
If you have any queries, please contact our customer service (see Service and support
(Page 43)).
2.3General warning notices
Safety instructions
2.3 General warning notices
WARNING
Danger due to bursting of the coupling
The coupling may burst if it is not used properly. There is a risk of fatal injury from flying
fragments.
● Use the coupling for the purpose for which it is intended.
● Secure the coupling parts to prevent them from falling.
BIPEX-S 3410en
Operating Instructions 10/201713
Page 14
Safety instructions
2.3 General warning notices
BIPEX-S 3410en
14Operating Instructions 10/2017
Page 15
Description
Application
Design
3
The BIPEX-S couplings described here are torsionally flexible claw couplings that are free of
torsional backlash and are available in various types and sizes. They are characterised by a
very compact design.
BIPEX-S couplings are fail-safe.
These instructions describe the assembly and operation of a BIPEX-S coupling arranged
horizontally with a shaft-hub connection made by a cylindrical or conical bore with a parallel
key or by various clamping connections. Please consult Flender if you want to use a different
type of installation.
BIPEX-S couplings are designed for use in all kinds of machines. They are primarily used in
drive units with torque transmission without any backlash and only low misalignment.
A BIPEX-S coupling consists of two hub parts that are connected to one another by a cam ring
made of an elastomer material. In the BHH-W type the hub parts are connected to one another
by two cam rings and a spacer.
The cam ring is fitted between the hub cams with a small amount of interference. The coupling
characteristic of zero backlash is based on this.
The hub parts are joined to the shaft by finished bores with a parallel key or various clamping
connections.
The diagrams show the various types with their constituent parts and their part numbers.
BIPEX-S 3410en
Operating Instructions 10/201715
Page 16
Description
1Coupling part N
11Set screw
20Cam ring
Figure 3-1Type BNN
BIPEX-S 3410en
16Operating Instructions 10/2017
Page 17
Description
2Coupling part G
12Cylinder-head screw
20Cam ring
Figure 3-2Type BGG
3Coupling part C
12Cylinder-head screw
20Cam ring
Figure 3-3Type BCC
BIPEX-S 3410en
Operating Instructions 10/201717
Page 18
Description
4Coupling part H
12Cylinder-head screw
20Cam ring
Figure 3-4Type BHH
BIPEX-S 3410en
18Operating Instructions 10/2017
Page 19
Description
5Coupling part K
12Cylinder-head screw
20Cam ring
Figure 3-5Type BKK
BIPEX-S 3410en
Operating Instructions 10/201719
Page 20
Description
3Coupling part C
6Coupling part S
12Cylinder-head screw
13Cylinder-head screw
20Cam ring
61Clamping taper
Figure 3-6Type BCS
BIPEX-S 3410en
20Operating Instructions 10/2017
Page 21
Description
4Coupling part H
7Spacer W
12Cylinder-head screw
20Cam ring
Figure 3-7Type BHH-W
BIPEX-S 3410en
Operating Instructions 10/201721
Page 22
Description
BIPEX-S 3410en
22Operating Instructions 10/2017
Page 23
Application planning
7KLVZD\XS)UDJLOH.HHS
GU\
.HHS
GU\
&HQWUHRIJUDYLW\'RQRW
XVHKDQGKRRN
$WWDFKKHUH
Check the delivery for damage and for completeness. Report any damage and/or missing parts
to Flender immediately.
The coupling is delivered in individual parts and preassembled groups. Preassembled groups
may not be dismantled.
4.1Transport of the coupling
WARNING
Severe personal injury due to improper transport
Severe personal injury due to falling components or due to crushing. Damage to coupling
parts possible due to use of unsuitable transport means.
● Only use lifting gear and load suspension devices with sufficient load bearing capacity for
transport.
● Please observe the symbols applied on the packaging.
4
If not specifically contractually agreed otherwise, the packaging complies with the HPE
Packaging Directive.
Figure 4-1Transport symbols
4.2Storage of the coupling
NOTICE
Property damage due to improper storage
Negative changes to the physical properties of the coupling and/or coupling damage.
● Please observe the information about storing the coupling.
BIPEX-S 3410en
Operating Instructions 10/201723
Page 24
Application planning
4.2 Storage of the coupling
The coupling, unless not specifically ordered otherwise, is supplied with preservation and can
be stored for up to 3 months.
Note
Information about storing the coupling
● Ensure that the storage room is dry (relative humidity < 65 %) and free of dust.
● Ensure that there is no condensation.
● Do not store the coupling together with corrosive chemicals, acids, caustic solutions, etc.
● If the coupling contains elastomer components, ensure that there are no devices in the
storage room that produce ozone, such as fluorescent lights, mercury vapour lamps or highvoltage electrical equipment.
● Store the coupling on suitable supports or in suitable containers.
Long-term storage
NOTICE
Property damage due to improper long-term storage
Negative changes to the physical properties of the coupling and/or coupling damage.
● Note the handling instructions for long-term storage.
1. You can find the required type of preservative agent in the following table (types of
preservative agents for long-term storage).
2. Remove the elastomer components. These must not come into contact with cleaning agents
and long-term preservative agents.
3. Clean the coupling parts.
4. Apply the stipulated preservative agent.
5. Store the coupling parts and the elastomer components separately.
Table 4-1Types of preservative agents for long-term storage
Oil sprayAnti-corrosion agentUp to 12 monthsUp to 4 months
Tectyl 846 or similarLong-term preservative agent on
wax basis
Emulsion cleaner + VCI foilActive system, reusableUp to 5 yearsUp to 5 years
Up to 36 monthsUp to 12 months
BIPEX-S 3410en
24Operating Instructions 10/2017
Page 25
Assembly
5
Assembly of the coupling comprises the following steps:
● Preparatory work (Page 25)
● Assembling the coupling (Page 26)
● Aligning the coupling (Page 29)
WARNING
Danger of injury due to bursting of the coupling
If you do not observe the information stipulated here regarding assembly, this can lead to
bursting of the coupling during operation. There is a risk of fatal injury from flying fragments.
● Please observe all the stipulations concerning assembly.
Note
Information about the assembly of the coupling
● Only use undamaged components for the assembly of the coupling.
● Follow the assembly sequence.
● Please ensure that there is sufficient space at the assembly location and that the location
is tidy and clean in order to be able to assemble and maintain the coupling without any risk.
● If a dimension drawing has been created for the coupling, please observe the information
it contains as a matter of priority.
5.1Preparatory work
No preparatory work is required, since the coupling is supplied finish bored, grooved and
balanced.
Balancing is performed to customer specifications or according to the half-parallel key
agreement (DIN ISO 21940-32) to balancing quality G16 (DIN ISO 21940).
BIPEX-S 3410en
Operating Instructions 10/201725
Page 26
Assembly
5.2 Assembling the coupling
5.2Assembling the coupling
NOTICE
Property damage
Damage to the elastomer components from cleaning agents.
● Ensure that the elastomer components do not come into contact with cleaning agents.
NOTICE
Property damage
Damage to the shaft end, the coupling parts and/or the parallel key.
● Note the handling instructions regarding assembly of the coupling parts.
Assembly of the coupling comprises the following steps:
● Assembling the coupling parts (Page 26)
● Plug-in assembly of the coupling halves (Page 28)
5.2.1Assembling the coupling parts
The assembly procedure depends on which coupling part you wish to assemble.
● Attach the coupling part N (1) with parallel key to the shaft (Page 26)
● Attaching coupling part G (2), C (3), H (4) or K (5) to the shaft with a clamping connection
(Page 27)
● Attach coupling part S (6) to the hollow shaft with a clamping connection (Page 27)
5.2.1.1Attach the coupling part N (1) with parallel key to the shaft
Procedure
1. Undo the set screws until it is no longer possible for there to be a collision with the parallel
key or the shaft.
2. Clean the bores and shaft ends.
BIPEX-S 3410en
26Operating Instructions 10/2017
Page 27
Assembly
5.2 Assembling the coupling
3. Put coupling part N (1) on the shaft.
Note
Coupling parts with cylindrical bore
To make assembly easier, you can heat coupling part N (1) with cylindrical bore up to a
maximum of 150 °C if required. Note when doing this the temperature range of the cam
ring (20) (refer to section BIPEX-S cam ring (20) (Page 64)). Remove the cam ring (20)
where appropriate. Protect adjacent components against damage and heating to
temperatures above 80 °C.
4. Secure the coupling part with the set screws. When doing this the shaft must not protrude
or be set back from the inner side of the hub.
5. Tighten the set screws to the specified tightening torque TA (see section ).
6. If you have removed the cam ring (20), re-fit the cam ring (20).
5.2.1.2Attaching coupling part G (2), C (3), H (4) or K (5) to the shaft with a clamping connection
Procedure
1. Undo the cylinder-head screws (12).
2. Clean the bores and shaft ends.
3. Put coupling parts G (2), C (3), H (4) or K (5) on the shaft.
4. When doing this the shaft must not protrude or be set back from the inner side of the hub.
5. Tighten the cylinder-head screws (12) as follows:
– Coupling parts G (2) and C (3)
Tighten the cylinder-head screw (12) to the specified tightening torque TA (see section
Tightening torques and widths A/F (Page 63)).
– Coupling part H (4)
Tighten the cylinder-head screws (12) in alternating order in several stages up to the
specified tightening torque TA (see section Tightening torques and widths A/F
(Page 63)).
– Coupling part K (5)
Tighten the cylinder-head screws (12) in crisscross rotation in several stages to the
specified tightening torque TA (see section Tightening torques and widths A/F
(Page 63)).
5.2.1.3Attach coupling part S (6) to the hollow shaft with a clamping connection
Procedure
1. Undo the cylinder-head screw (13) and the clamping taper (61).
2. Clean, de-grease/de-oil and dry the hollow shaft hole and the force fit of the coupling
part S (6).
BIPEX-S 3410en
Operating Instructions 10/201727
Page 28
Assembly
5.2 Assembling the coupling
3. Insert the coupling part S (6) with cylinder-head screw (13) and clamping taper (61) into
the hollow shaft.
4. Tighten the cylinder-head screw (13) to the specified tightening torque TA (see section
Tightening torques and widths A/F (Page 63)).
5.2.2Plug-in assembly of the coupling halves
Note
As a result of the interference between the cams and the cam ring (20) an axial force is required
to insert the coupling parts axially. The axial force depends on the size of the coupling and the
Shore hardness of the cam ring (20). It increases again after insertion so that there is no
permanent stressing of the coupled units.
The assembly procedure depends on which type you wish to assemble.
● Plug-in assembly of types BNN, BGG, BCC, BHH, BKK and BCS (Page 28)
● Plug-in assembly of type BHH-W (Page 28)
5.2.2.1Plug-in assembly of types BNN, BGG, BCC, BHH, BKK and BCS
Procedure
1. Push the cam ring (20) onto a coupling part.
2. Push the coupling halves together. When doing this, pay attention to the dimension S from
section Speeds, geometry data and weights (Page 55).
5.2.2.2Plug-in assembly of type BHH-W
Procedure
1. Push a cam ring (20) onto each coupling part H.
2. Push the spacer W (7) into a coupling part H and hold or support the spacer W (7).
3. Push the coupling halves together. When doing this, pay attention to the dimension S from
section Speeds, geometry data and weights (Page 55).
BIPEX-S 3410en
28Operating Instructions 10/2017
Page 29
5.3Aligning the coupling
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6
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5.3.1Purpose of alignment
The shafts that are joined by the coupling are never on an ideal precise axis but have a certain
amount of misalignment.
Misalignment in the coupling leads to restoring forces that can stress adjacent machine parts
(e.g. the bearings) to an unacceptable extent.
The misalignment values in operation result from the following:
● Misalignment due to assembly
Incorrect position due to a lack of precision when aligning
The specified permissible values for axial, angular and/or radial misalignment may not appear
simultaneously.
● Halve the values for if axial, angular and/or radial misalignment if they appear
simultaneously.
5.3.2.1Axial misalignment
Set the axial misalignment ΔKa to a value within the permissible tolerance range of dimension
S.
You can find the values for dimension S in section Speeds, geometry data and weights
(Page 55).
5.3.2.2Angular misalignment
Determine the value ΔS (ΔS = S
ΔS
.
perm
You can find the values for ΔS
(Page 62).
If required, you can calculate the angular misalignment ΔKw as follows:
ΔKw [rad] = ΔS / DA
ΔKw [deg] = (ΔS / DA) · (180 / π)
If required, you can calculate the permissible angular misalignment ΔKw
ΔKw
ΔKw
[rad] = ΔS
perm
[deg] = (ΔS
perm
DA in mm see section Speeds, geometry data and weights (Page 55)
ΔS
see section Shaft misalignment values during operation (Page 62)
perm
5.3.2.3Radial misalignment
Determine the value ΔKr. The determined value ΔKr may not exceed the value ΔKr
You can find the permissible radial misalignment ΔKr
during operation (Page 62).
/ DA
perm
/ DA) · (180 / π)
perm
- S
max
perm
). The determined value ΔS may not exceed the value
min
in section Shaft misalignment values during operation
as follows:
perm
in section Shaft misalignment values
perm
perm
.
BIPEX-S 3410en
30Operating Instructions 10/2017
Page 31
Commissioning
In order to ensure safe commissioning, carry out various tests prior to commissioning.
Testing before commissioning
WARNING
Danger
Overload conditions can occur during the commissioning of the coupling. The coupling can
burst and metal parts can be flung out. There is a risk of fatal injury from flying fragments.
● Carry out the tests prior to commissioning.
● Do not touch the rotating coupling.
1. Check the tightening torques of the screws of the coupling in accordance with section
Tightening torques and widths A/F (Page 63).
2. Check the tightening torques of the foundation bolts of the coupled machines.
3. Check whether the enclosures (coupling guard, touch protection) have been installed and
that the function of the coupling has not been adversely affected by the enclosure. This
also applies to test runs and rotational direction checks.
6
BIPEX-S 3410en
Operating Instructions 10/201731
Page 32
Commissioning
BIPEX-S 3410en
32Operating Instructions 10/2017
Page 33
Operation
7.1Normal operation of the coupling
The coupling runs quietly and shock-free during normal operation.
7.2Faults - causes and rectification
A form of behaviour which is different to normal operation is classed as a fault and has to be
rectified immediately.
Look out specifically for the following faults during coupling operation:
● Unusual coupling noise
● Sudden occurrence of shocks
7.2.1Procedure in the event of malfunctions
7
WARNING
Danger due to bursting of the coupling
There is a risk of fatal injury from flying fragments.
● Switch off the unit at once if any malfunctions occur.
● Note during the maintenance work the possible causes of faults and the notes on rectifying
them.
Proceed as described below if there is a malfunction of the coupling during operation:
1. De-energise the drive immediately.
2. Initiate the required action for repair, taking into consideration the applicable safety
regulations.
If you cannot determine the cause or if you cannot carry out repair work with your own means,
request one of our customer service technicians.
7.2.2Identifying the fault cause
Faults occur frequently due to application errors or they occur due to operational circumstances
such as wear of wearing parts or changes to the system.
BIPEX-S 3410en
Operating Instructions 10/201733
Page 34
Operation
7.2 Faults - causes and rectification
The faults and fault causes listed below only serve as an indication for troubleshooting. In the
case of a complex system be sure to include all the system components in the search for the
fault.
WARNING
Physical injury
Injury from rotating parts.
● Only carry out work on the coupling when it is not moving.
● Secure the drive unit against being operated accidentally.
● Attach a notice to the switch stating clearly that work is being carried out on the coupling.
● Before starting any work, make sure that the unit is free from loads.
Intended use
The coupling is only approved for the applications specified in these instructions. Please
observe all the stipulations in section Intended use (Page 12).
7.2.2.1Possible faults
Table 7-1Table of faults
FaultCauseRectification
Sudden changes in the noise level and/
or sudden occurrences of shocks
Wear of wearing partsFollow the instructions given in section
Replacing wearing parts (Page 36).
Changed alignmentFollow the instructions given in section
Correcting the changed alignment
(Page 37).
Coupling not suitable for the operating
conditions.
Check the possible causes given in sec‐
tion Unsuitable coupling (Page 35).
Incorrect assembly of the coupling.
Check the possible causes given in sec‐
tions Assembly-related causes
(Page 35) and Specific installation-rela‐
ted and maintenance-related causes
(Page 36).
Incorrect maintenance of the coupling.
Check the possible causes given in sec‐
tions Maintenance-related causes
(Page 36) and Specific installation-rela‐
ted and maintenance-related causes
(Page 36).
Use a coupling that is suitable for the
operating conditions.
Reassemble the coupling in accordance
with these instructions.
Please observe all the stipulations and
requirements given in chapter Assem‐
bly (Page 25).
Please observe all the stipulations and
requirements given in chapter Servic‐
ing (Page 39).
BIPEX-S 3410en
34Operating Instructions 10/2017
Page 35
7.2 Faults - causes and rectification
FaultCauseRectification
Presence of vibrationCoupling not suitable for the operating
conditions.
Check the possible causes given in sec‐
tion Unsuitable coupling (Page 35).
Incorrect assembly of the coupling.
Check the possible causes given in sec‐
tions Assembly-related causes
(Page 35) and Specific installation-rela‐
ted and maintenance-related causes
(Page 36).
Incorrect maintenance of the coupling.
Check the possible causes given in sec‐
tions Maintenance-related causes
(Page 36) and Specific installation-rela‐
ted and maintenance-related causes
(Page 36).
Use a coupling that is suitable for the
operating conditions.
Reassemble the coupling in accordance
with these instructions.
Please observe all the stipulations and
requirements given in chapter Assem‐
bly (Page 25).
Please observe all the stipulations and
requirements given in chapter Servic‐
ing (Page 39).
7.2.2.2Possible causes
Operation
Unsuitable coupling
● Important information on the description of the drive unit and the environment were not
● System torque too high and/or torque dynamics not permissible.
● System speed too high.
● Application factor not selected correctly.
● Chemically aggressive environment not taken into consideration.
● Coupling not suitable for the ambient temperature.
● Diameter and/or assigned fit of the finished bore not permissible.
● Width across corners of the parallel keyways greater than the width across corners of the
● Shaft-hub connection incorrectly sized.
● Maximum permissible load conditions not taken into consideration.
● Maximum permissible overload conditions not taken into consideration.
● Dynamic load conditions not taken into consideration.
● Coupling and the machine and/or drive train form a critical torsional, axial or bending
available when the coupling was chosen.
parallel keyways in accordance with DIN 6885/1 for the maximum permissible bore.
vibration system.
Assembly-related causes
● Damaged parts installed.
● Shaft diameter outside the stipulated tolerance range.
BIPEX-S 3410en
Operating Instructions 10/201735
Page 36
Operation
7.2 Faults - causes and rectification
● Coupling parts interchanged and hence not assigned to the specified shaft.
● Stipulated locking elements to prevent axial movements not installed.
● Stipulated tightening torques not adhered to.
● Bolts inserted dry or greased.
● Flange surfaces of screwed connections not cleaned.
● Alignment and/or shaft misalignment values not set in accordance with the instructions.
● Coupled machines were not correctly connected to the foundation so that a shifting of the
machines leads to an impermissible displacement of the coupling parts.
● Coupled machines not earthed adequately.
● Coupling guard used is not suitable.
Maintenance-related causes
● Stipulated maintenance intervals not adhered to.
● Spare parts that were used were not original spare parts from Flender.
● Flender spare parts that were used were old or damaged.
● Leak in the area of the coupling not detected so that chemically aggressive substances
damage the coupling.
● Indications of faults, such as noise or vibration, were not heeded.
● Stipulated tightening torques not adhered to.
● Alignment and/or shaft misalignment values not set in accordance with the instructions.
Specific installation-related and maintenance-related causes
● Cam ring (20) not fitted.
● Fitted cam ring (20) heated up excessively when applying heat to the coupling parts.
7.2.3Correcting faults
7.2.3.1Replacing wearing parts
Cam rings (20) are subject to wear and this wear can result in torsional backlash.
Procedure
1. Check the wear on the cam ring (20) (see section Maximum permissible torsional
backlash (Page 40)).
2. Replace the cam ring (20) where appropriate (see section Replacing wearing parts
(Page 40)).
BIPEX-S 3410en
36Operating Instructions 10/2017
Page 37
7.2.3.2Correcting the changed alignment
A changed alignment of the coupling during operation often occurs when the coupled machines
shift towards one another. A cause of this can be loose foundation bolts.
Procedure
1. Correct the cause for the change in alignment.
2. Check the wearing parts for wear and replace them as required.
3. Check the locking elements that prevent axial movements and correct these as required.
4. Realign the coupling.
Operation
7.2 Faults - causes and rectification
BIPEX-S 3410en
Operating Instructions 10/201737
Page 38
Operation
7.2 Faults - causes and rectification
BIPEX-S 3410en
38Operating Instructions 10/2017
Page 39
Servicing
8.1Maintenance intervals
WARNING
Danger of injury due to bursting of the coupling
The coupling can burst if the maintenance intervals are not adhered to. There is a risk of fatal
injury from flying fragments.
● Please observe all the stipulations concerning maintenance of the coupling in this section.
WARNING
Danger of injury due to bursting of the coupling
The coupling can burst if the maximum permitted torsional backlash is exceeded. There is a
risk of fatal injury from flying fragments.
● Note also the actual wear of the elastomer components.
WARNING
8
Physical injury
Injury from rotating parts.
● Only carry out work on the coupling when it is not moving.
● Secure the drive unit against being operated accidentally.
● Attach a notice to the switch stating clearly that work is being carried out on the coupling.
● Before starting any work, make sure that the unit is free from loads.
Check the torsional backlash between the coupling parts at the specified maintenance
intervals.
● No wear is permitted at the cam ring (20) for applications without backlash. Replace the
cam ring (20) as soon as any torsional backlash is found.
● The maximum permissible torsional backlash for the various types for other applications
can be found in section Maximum permissible torsional backlash (Page 40).
Table 8-1Maintenance intervals
TypeInitial maintenanceFollow-up maintenance
All types3 months after commissioningEvery 12 months
BIPEX-S 3410en
Operating Instructions 10/201739
Page 40
ෙ6
9
Servicing
8.2 Maximum permissible torsional backlash
Note
Shorter maintenance intervals
If necessary, set shorter maintenance intervals depending on actual wear.
8.2Maximum permissible torsional backlash
In order to calculate the torsional backlash, rotate one coupling part without applying torque
up to the stop. Mark both of the coupling halves in the way shown in the diagram below. Turn
the coupling part in the opposite direction up to the stop. The markings on both halves will then
move apart. The distance between the markings corresponds to the torsional backlash.
Figure 8-1Markings for calculating the torsional backlash
Table 8-2Maximum permissible torsional backlash for the BIPEX-S coupling
Size57914192428384248
Maximum permissible
torsional backlash ∆S
[mm]
0.40.611.411.31.722.42.7
V
8.3Replacing wearing parts
WARNING
Danger due to bursting of the coupling
If you do not observe the information stipulated here regarding replacement of wearing parts,
this can lead to bursting of the coupling during operation. There is a risk of fatal injury from
flying fragments.
● Please observe all the stipulations concerning the replacement of wearing parts.
Replace the cam ring (20) if the maximum permissible torsional backlash has been reached.
BIPEX-S 3410en
40Operating Instructions 10/2017
Page 41
Procedure
1. With type BHH-W secure the spacer W (7) to prevent it from falling.
2. Move the coupled machines apart.
3. With type BHH-Wremove the spacer W (7) radially.
4. Remove the cam ring (20), or in the case of type BHH-W, both cam rings (20).
5. Insert the new cam ring (20) or the two new cam rings (20).
Please observe the information in section Use and storage of the cam rings (Page 64).
When reinstalling the coupling parts please observe the information in chapters Assembly
(Page 25) and Commissioning (Page 31).
2. Secure the coupling parts to prevent them from falling.
3. Remove the set screws.
4. Use a suitable pulling fixture.
5. Heat up the coupling part N (1) using a burner above the parallel keyway along its length
to maximum 80 °C.
Note when doing this the temperature range of the cam ring (20) (refer to section BIPEXS cam ring (20) (Page 64)). Remove the cam ring (20) where appropriate.
6. Pull off the coupling part N (1). Use suitable lifting gear when doing this.
7. Check the hub bore and the shaft for damage and protect them against corrosion.
8. Replace any damaged parts.
When reinstalling the coupling parts please observe the information in chapters Assembly
(Page 25) and Commissioning (Page 31).
BIPEX-S 3410en
Operating Instructions 10/201741
Page 42
Servicing
8.5 Removing coupling part G (2), C (3), H (4) or K (5)
8.5Removing coupling part G (2), C (3), H (4) or K (5)
Procedure
1. With type BHH-Wsecure the spacer W (7) to prevent it from falling.
2. Move the coupled machines apart.
3. With type BHH-Wremove the spacer W (7) radially.
4. Secure the coupling parts to prevent them from falling.
5. Undo the cylinder-head screws (12).
6. Pull off coupling parts G (2), C (3), H (4) or K (5). Use suitable lifting gear when doing this.
7. Check coupling parts G (2), C (3), H (4) or K (5), the spacer W (7) and the shaft for any
damage and protect them against corrosion.
8. Replace any damaged parts.
When reinstalling the coupling parts please observe the information in chapters Assembly
(Page 25) and Commissioning (Page 31).
8.6Removing coupling part S (6)
Procedure
1. Move the coupled machines apart.
2. Secure the coupling parts to prevent them from falling.
3. Undo the cylinder-head screw (13).
4. Pull off the coupling part S (6) together with the clamping taper (61). Use suitable lifting
gear when doing this.
5. Check the coupling part S (6), the clamping taper (61) and the shaft for any damage and
protect them against corrosion.
6. Replace any damaged parts.
When reinstalling the coupling parts please observe the information in chapters Assembly
(Page 25) and Commissioning (Page 31).
BIPEX-S 3410en
42Operating Instructions 10/2017
Page 43
Service and support
9.1Contact
Contact
When ordering spare parts, requesting a customer service technician or in the case of technical
queries, please contact our factory or one of our customer service addresses:
Flender GmbH
Schlavenhorst 100
46395 Bocholt
Germany
Tel.: +49 (0)2871/92-0
Fax.: +49 (0)2871/92-2596
9
BIPEX-S 3410en
Operating Instructions 10/201743
Page 44
Service and support
9.1 Contact
BIPEX-S 3410en
44Operating Instructions 10/2017
Page 45
Disposal
Disposal of the coupling
Dispose of the coupling parts according to applicable national regulations or recycle them.
10
BIPEX-S 3410en
Operating Instructions 10/201745
Page 46
Disposal
BIPEX-S 3410en
46Operating Instructions 10/2017
Page 47
Spare parts
11.1Ordering spare parts
By stocking the most important spare parts at the installation site you can ensure that the
coupling is ready for use at any time.
Note
Original spare parts
Only use original spare parts from Flender. Flender only accepts liability for original spare parts
from Flender.
Other spare parts are not tested and approved by Flender. Non-approved spare parts may
possibly change the design characteristics of the coupling and thus impact active and/or
passive safety.
Flender will accept no liability or warranty whatsoever for damage occurring as a result of the
use of non-approved spare parts. The same applies to any accessories that were not supplied
by Flender.
You can find the available spare parts for the coupling described here at Spare parts drawing
and spare parts list (Page 48).
11
You will find our contact data for ordering spare parts in Service and support (Page 43).
Information required when ordering spare parts
● Flender order number with item
● Flender drawing number
● Coupling type and size
● Part number (refer to Spare parts drawing and spare parts list (Page 48))
● Dimensions of the pare part, for example:
– Bore
– Bore tolerance
– Parallel keyway and balancing
● Special dimensions, for example, flange connection dimensions, intermediate sleeve length
or brake drum dimensions
BIPEX-S 3410en
Operating Instructions 10/201747
Page 48
Spare parts
11.2 Spare parts drawing and spare parts list
● Any special properties of the spare part, such as, for example:
– Temperature resistance
– Electrical insulation
– Operating fluid
– Use in potentially explosive atmospheres
● Quantity
11.2Spare parts drawing and spare parts list
11.2.1Type BNN
Figure 11-1Spare parts drawing for type BNN
Table 11-1Spare parts list for type BNN
Part numberDesignation
1Coupling part N
11Set screw
20Cam ring
BIPEX-S 3410en
48Operating Instructions 10/2017
Page 49
11.2.2Type BGG
Spare parts
11.2 Spare parts drawing and spare parts list
Figure 11-2Spare parts drawing for type BGG
Table 11-2Spare parts list for type BGG
Part numberDesignation
2Coupling part G
12Cylinder-head screw
20Cam ring
BIPEX-S 3410en
Operating Instructions 10/201749
Page 50
Spare parts
11.2 Spare parts drawing and spare parts list
11.2.3Type BCC
Figure 11-3Spare parts drawing for type BCC
Table 11-3Spare parts list for type BCC
Part numberDesignation
3Coupling part C
12Cylinder-head screw
20Cam ring
BIPEX-S 3410en
50Operating Instructions 10/2017
Page 51
11.2.4Type BHH
Spare parts
11.2 Spare parts drawing and spare parts list
Figure 11-4Spare parts drawing for type BHH
Table 11-4Spare parts list for type BHH
Part numberDesignation
4Coupling part H
12Cylinder-head screw
20Cam ring
BIPEX-S 3410en
Operating Instructions 10/201751
Page 52
Spare parts
11.2 Spare parts drawing and spare parts list
11.2.5Type BKK
Figure 11-5Spare parts drawing for type BKK
Table 11-5Spare parts list for type BKK
Part numberDesignation
5Coupling part K
12Cylinder-head screw
20Cam ring
BIPEX-S 3410en
52Operating Instructions 10/2017
Page 53
11.2.6Type BCS
Spare parts
11.2 Spare parts drawing and spare parts list
Figure 11-6Spare parts drawing for type BCS
Table 11-6Spare parts list for type BCS
Part numberDesignation
3Coupling part C
6Coupling part S
12Cylinder-head screw
13Cylinder-head screw
20Cam ring
61Clamping taper
Note
The hub S (6), the clamping taper (61) and the clamping screw (13) make up one module.
Replace the entire module.
BIPEX-S 3410en
Operating Instructions 10/201753
Page 54
Spare parts
11.2 Spare parts drawing and spare parts list
11.2.7Type BHH-W
Figure 11-7Spare parts drawing for type BHH-W
Table 11-7Spare parts list for type BHH-W
Part numberDesignation
4Coupling part H
7Spacer W
12Cylinder-head screw
20Cam ring
54Operating Instructions 10/2017
BIPEX-S 3410en
Page 55
Technical data
1'
'$
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61/1/
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A.1Speeds, geometry data and weights
In this section you can find dimensional drawings and technical data for BIPEX-S couplings of
the following types:
● Type BNN (Page 55)
● Type BGG (Page 56)
● Type BCC (Page 57)
● Type BHH (Page 58)
● Type BKK (Page 59)
● Type BCS (Page 60)
● Type BHH-W (Page 61)
A.1.1Type BNN
A
①Size 5 to 38
②Size 42 to 48
1Coupling part N
Figure A-1Type BNN
BIPEX-S 3410en
Operating Instructions 10/201755
Page 56
1'
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61/1/
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Technical data
A.1 Speeds, geometry data and weights
Table A-1Geometry data and weights of type BNN
SizeDA
mm
5105- 55+0.2150.003
7147-78+0.3220.007
92010-1010+0.4300.018
143016-1113+0.5350.045
194024-2516+0.5660.14
245528-3018+0.5780.36
286538-3520+0.5900.53
388045-4524+1.01141.1
429555855026+1.01263.5
4810562955628+1.01405.3
1)
Maximum bore for parallel keyway in accordance with DIN 6885/1.
2)
Weight applies to one coupling with maximum bore.
D1 / D2
max.
mm
ND1 / ND2
1)
mm
NL1 / NL2
mm
mm
SLG
perm dev.
mm
mm
Weight
m
kg
2)
A.1.2Type BGG
①Size 5 to 38
②Size 42 to 48
2Coupling part G
Figure A-2Type BGG
BIPEX-S 3410en
56Operating Instructions 10/2017
Page 57
1'
'$
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61/1/
A.1 Speeds, geometry data and weights
Table A-2Geometry data and weights of type BGG
SizeDA
mm
5104-55+0.2150.003
7147-78+0.3220.007
9209-1010+0.4300.019
143016-1113+0.5350.04
194024-2516+0.5660.14
245528-3018+0.5780.35
286538-3520+0.5900.51
388045-4524+1.01141.0
429550855026+1.01263.6
4810555955628+1.01405.0
1)
Weight applies to one coupling with maximum bore.
D1 / D2
max.
mm
ND1 / ND2
mm
NL1 / NL2
mm
mm
SLG
perm dev.
mm
mm
Technical data
Weight
1)
m
kg
A.1.3Type BCC
①Size 14 to 38
②Size 42 to 48
3Coupling part C
Figure A-3Type BCC
BIPEX-S 3410en
Operating Instructions 10/201757
Page 58
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Technical data
A.1 Speeds, geometry data and weights
Table A-3Geometry data and weights of type BCC
SizeDA
mm
D1 / D2
max.
mm
ND1 / ND2
mm
NL1 / NL2
mm
mm
SLG
perm dev.
mm
mm
143016-1113+0.5350.04
194024-1716+0.5500.11
245528-2018+0.5580.26
286535-2120+0.5620.38
388045-3124+1.0860.79
429550853426+1.0942.5
4810555954028+1.01083.3
1)
Weight applies to one coupling with maximum bore.
A.1.4Type BHH
Weight
m
kg
1)
4Coupling part H
Figure A-4Type BHH
Table A-4Geometry data and weights of type BHH
SizeDA
mm
1430161113+0.5350.02
1940232516+0.5660.15
2455303018+0.5780.35
2865383520+0.5900.53
3880484524+1.01140.98
4295505026+1.01264.1
48105555628+1.01405.6
1)
Weight applies to one coupling with maximum bore.
58Operating Instructions 10/2017
D1 / D2
max.
mm
NL1 / NL2
mm
mm
SLG
perm dev.
mm
mm
Weight
1)
m
kg
BIPEX-S 3410en
Page 59
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61/1/
A.1 Speeds, geometry data and weights
A.1.5Type BKK
5Coupling part K
Figure A-5Type BKK
Table A-5Geometry data and weights of type BKK
SizeDA
mm
14301418.513+0.5500.11
1940202515+0.5650.23
2455253018+0.5780.57
2865363520+0.5900.86
38804843.524+1.01111.5
4295505026+1.01264.0
48105555628+1.01405.4
1)
Weight applies to one coupling with maximum bore.
D1 / D2
max.
mm
NL1 / NL2
mm
mm
SLG
perm dev.
mm
mm
Technical data
Weight
1)
m
kg
BIPEX-S 3410en
Operating Instructions 10/201759
Page 60
'$
/*
G
'
61/1/
Technical data
A.1 Speeds, geometry data and weights
A.1.6Type BCS
3Coupling part C
6Coupling part S
Figure A-6Type BCS
Table A-6Geometry data and weights of type BCS
SizeDA
mm
920916101110+0.4400.03
143016251112.513+0.542.50.06
19402430172016+0.5610.13
24552838203018+0.5760.33
28653542213620+0.5850.50
38804560314524+1.01131.1
1)
Weight applies to one coupling with maximum bore.
D1
max.
mm
d2
max.
mm
NL1
mm
NL2
mm
mm
SLG
perm dev.
mm
mm
Weight
m
kg
1)
60Operating Instructions 10/2017
BIPEX-S 3410en
Page 61
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A.1 Speeds, geometry data and weights
A.1.7Type BHH-W
4Coupling part H
7Spacer W
Figure A-7Type BHH-W
Table A-7Geometry data and weights of type BHH-W
SizeDA
mm
1430161113+0.5308530001.35
1940232516+0.54013530001.75
2455303018+0.55016530003.4
2865383520+0.56020530003.5
3880484524+1.07525030007.8
4295505026+1.090265300011.8
48105555628+1.0110285300015.3
1)
Weight applies to one coupling with maximum bore and shaft spacing 1000 mm.
D1 / D2
max.
mm
NL1 / NL2
mm
mm
SDZ
perm dev.
mm
mm
LGWeight
min.mmmax.
mm
Technical data
1)
m
kg
BIPEX-S 3410en
Operating Instructions 10/201761
Page 62
Technical data
A.2 Shaft misalignment values during operation
A.2Shaft misalignment values during operation
Table A-8Maximum permissible shaft misalignment values during operation
Size
5
7
9
14
19
24
28
38
42
48
Shore hardnessPermissible shaft misalignment
80 Shore A
92 Shore A
98 Shore A
80 Shore A
92 Shore A
98 Shore A
64 Shore D
80 Shore A
92 Shore A
98 Shore A
64 Shore D
80 Shore A
92 Shore A
98 Shore A
64 Shore D
80 Shore A
92 Shore A
98 Shore A
64 Shore D
92 Shore A
98 Shore A
64 Shore D
92 Shore A
98 Shore A
64 Shore D
92 Shore A
98 Shore A
64 Shore D
92 Shore A
98 Shore A
64 Shore D
92 Shore A
98 Shore A
64 Shore D
Axial
ΔKa
mm
0.4
0.4
0.4
0.6
0.6
0.6
0.6
0.8
0.8
0.8
0.8
1.2
1.2
1.2
1.2
1.4
1.4
1.4
1.5
1.5
1.5
1.8
1.8
1.8
2.1
2.1
2.1
perm
1
1
1
1
2
2
2
Radial
ΔKr
perm
mm
0.12
0.06
0.04
0.15
0.1
0.06
0.04
0.19
0.13
0.08
0.05
0.21
0.15
0.09
0.06
0.15
0.1
0.06
0.04
0.14
0.1
0.07
0.15
0.11
0.08
0.17
0.12
0.09
0.19
0.14
0.1
0.23
0.16
0.11
ΔKw
perm
Degrees
1.1
1
0.9
1.1
1
0.9
0.8
1.1
1
0.9
0.8
1.1
1
0.9
0.8
1.1
1
0.9
0.8
1
0.9
0.8
1
0.9
0.8
1
0.9
0.8
1
0.9
0.8
1
0.9
0.8
1)
Angular
ΔS
mm
0.19
0.17
0.16
0.27
0.24
0.22
0.20
0.38
0.35
0.31
0.28
0.58
0.52
0.47
0.42
0.77
0.70
0.63
0.56
0.96
0.86
0.77
1.13
1.02
0.91
1.40
1.26
1.12
1.66
1.49
1.33
1.83
1.65
1.47
perm
1) The specified permissible values for axial, angular and/or radial misalignment may not appear simultaneously. Halve the
values given in the table if axial, angular and/or radial misalignment appear simultaneously.
BIPEX-S 3410en
62Operating Instructions 10/2017
Page 63
A.3Tightening torques and widths A/F
Table A-9Tightening torques TAand widths A/F SW for parts 11, 12 and 13
Technical data
A.3 Tightening torques and widths A/F
SizeType BNN
Part 11
1)
Type BGG
Part 12
2)
Type BCC
Part 12
2)
Type BHH
Part 12
2)
Type BKK
Part 12
Type BCSType BHH-
2)
Part 12
2)
Part 13
2)
Part 12
T
A
NmSWmm
T
A
NmSWmm
T
A
NmSWmm
T
A
NmSWmm
T
A
NmSWmm
T
A
NmSWmm
T
A
NmSWmm
T
A
NmSWmm
52.51.50.31.5------------
72.51.50.41.5------------
9520.82------0.75283--
145222.522.51.431.32.522.59433
19102.5115104842.931541555.94
24102.515518510.5564155356155
2815432643625664356708326
3815438684825610535612010386
42204848848698356----848
48204145101451012010698----14510
1)
Threaded stud ISO 4029
2)
Hexagon socket cap screw DIN EN ISO 4762
Apply the recommended tightening torques in accordance with the stipulations in section
Tightening procedure (Page 63).
W
2)
A.4Tightening procedure
Tighten fastening screws to the specified tightening torque in accordance with the following
table:
Table A-10Tightening procedure
Scatter of the torque applied
at the tool
±5 %
The tightening torques apply to screws/bolts with untreated surfaces that are not oiled or are
only lightly oiled, and for screws/bolts that are used with a liquid screw locking agent in
accordance with these instructions. Use with lubricant paint or lubricant is not permitted.
BIPEX-S 3410en
Operating Instructions 10/201763
Tightening procedure
(As a rule, the tightening procedures listed are within the specified tool
torque scatter)
● Hydraulic tightening with mechanical screwdriver
● Torque-controlled tightening with a torque wrench or a torque
wrench that gives a signal
● Tightening with a precision mechanical screwdriver with dynamic
torque measurement
Page 64
Technical data
A.5 Cam rings
A.5Cam rings
A.5.1Use and storage of the cam rings
Note the following concerning the use and storage of the cam rings:
● Storage possible for up to 5 years
● Protect against direct sunlight, artificial light with a high UV‐content and extreme
temperatures
● Avoid contact with aggressive media
A.5.2BIPEX-S cam ring (20)
Table A-11BIPEX-S cam ring
MaterialHardnessCommentMarkingTemperature range
PU98 Shore AStandard for type BGG,
BCC, BHH, BKK, BCS
PU92 Shore AStandard for type BNNyellow-40 °C to +90 °C