KTR BoWex junior Manual

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
1
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
design No. 001 – junior plug-in coupling (2 parts)
design No. 002 – junior M coupling (3 parts)
design No. 003 – M and M...C
BoWex®
puncture
curved-tooth gear couplings®
types
No. 001 – junior plug-in coupling,
No. 002 – junior M coupling,
No. 003 – M and M...C
No. 006 - I
and their combinations
according to Standard 94/9/EC
(ATEX 95) for finish bored, pilot
bored and unbored couplings
design No. 006 - I

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
2
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
BoWex®curved-tooth gear couplings®are flexible shaft connections. They are able to
compensate for shaft displacement caused by, as an example, inaccuracies in production,
heat expansion, etc.
Table of Contents
1 Technical Data
2 Hints
2.1 Coupling Selection
2.2 General Hints
2.3 Safety and Advice Hints
2.4 General Hints to Danger
2.5 Proper Use
3 Storage
4 Assembly
4.1 Components of the Couplings
4.2 Hint Regarding the Finish Bore
4.3 Assembly of the Hubs
4.4 Displacements - Alignment of the Couplings
4.5 Spares Inventory, Customer Service Addresses
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.1 Use in Hazardous Areas According to the Regulations
5.2 Control Intervals for Couplings in Hazardous Areas
5.3 Checking of Torsional Backlash
5.4 Approximate Values of Wear
5.5 Permissible Coupling Materials in the Hazardous Area
5.6 Marking of Coupling for the Hazardous Area
5.7 Starting
5.8 Breakdowns, Causes and Elimination
5.9 EC Certificate of Conformity according to the EC Standards 94/9/EC
dated 23 March 1994

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
3
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
1 Technical Data
picture 1: BoWex®junior plug-in coupling (2 parts) picture 2: BoWex®junior M coupling (3 parts)
Table 1:
BoWex®junior plug-in coupling and BoWex®junior M coupling
torque
[Nm] finish bore [mm] thread for setscrews [mm]
BoWex®
size TKN T
K max. hub
component 1b
d1D1plug-in sleeve
component 2b
d2D2G
1t 1t 2TA
[Nm]
max. speed
[1/min]
Ø6, Ø7, Ø8, Ø9 22 Ø8 22
Ø10, Ø11 25 Ø10, Ø11 25
14 5 10
Ø12, Ø14 26 Ø12, Ø14 26 M5 6 8 1,4 6000
Ø12, Ø14 27
Ø16 30
Ø14, Ø15 29
19 8 16
Ø19 32 Ø19 35
M5 6 10 1,4 6000
Ø10, Ø11, Ø12 26
Ø14, Ø15, Ø16 32 Ø14, Ø16 32
Ø18, Ø19, Ø20 36 Ø19, Ø20 36
24 12 24
Ø24 38 Ø24 40
M5 6 10 1,4 6000
Table 2:
BoWex®junior plug-in coupling and BoWex®junior M coupling
dimensions
[mm]
BoWex®
size DHl
1; l2E 1L 1L H1 M 1F G E L LHM; N
14 40 23 2 48 40 8 18,5 21,5 4 50 37 6,5
19 47 25 2 52 42 10 19,0 23,0 4 54 37 8,5
24 53 26 2 54 45 9 21,5 23,5 4 56 41 7,5

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
4
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
1 Technical Data
picture 3: BoWex®design M picture 4: BoWex®design I
Table 3:
BoWex®design M and design I
BoWex®
size pilot bore dimensions
[mm] threads for setscrews 2) [mm]
un-
bored pilot bore
max.
finish
bore
d1; d2l1; l2E L LHM; N l3D DHD
Z1) G t TA
[Nm]
M-14 M-14C x - 15 23 4 50 37 6,5 10 25 40 33 M5 6 2
M-19 M-19C x - 20 25 4 54 37 8,5 10 32 47 39 M5 6 2
M-24 M-24C x - 24 26 4 56 41 7,5 14 36 53 45 M5 6 2
M-28 M-28C x - 28 40 4 84 46 19 13 44 65 54 M8 10 10
M-32 M-32C x - 32 40 4 84 48 18 13 50 75 63 M8 10 10
M-38 M-38C x - 38 40 4 84 48 18 13 58 83 69 M8 10 10
M-42 x - 42 42 4 88 50 19 13 65 92 78 M8 10 10
M-48 M-48C x - 48 50 4 104 50 27 13 68 95 78 M8 10 10
M-65 M-65C x 27
70 lg. 65 55 4 114 68 23 16 96 132 110 M10
15 /
20 3) 17
I-80 - 31 80 90 6 186 93 46,5 20 124 175 145 M10 20 17
I-100 - 35 100 110 8 228 102 63 22 152 210 176 M12 30 40
I-125 - 45 125 140 10 290 134 78 30 192 270 225 M16 40 80
1) tip circle of the hub
2) position of the threads for setscrews BoWex M-14 to M-24 opposite the keyway; BoWex M-28 to I-125 on the keyway
3) hub length 55 mm t = 15 mm, 70 mm t = 20 mm
BoWex®couplings with attached parts that can generate heat, sparks and static charging
(e. g. combinations with brake drums, brake disks, overload systems like torque limiters,
impellers etc.) are not allowed for the use in hazardous areas.
A separate checking must be made.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
5
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
2 Hints
2.1 Coupling Selection
!
CAUTION!
For a continuous and troublefree operation of the coupling it must be designed according to
the selection instructions (according to DIN 740 part 2) for the particular application
(see BoWex®catalogue).
If the operating conditions (performance, speed, changes at engine and machine) change,
the coupling selection must be checked again.
Please make sure that the technical data regarding torque only refers to the sleeve. The
transmissible torque of the shaft/hub connection must be checked by the orderer, and he is
responsible for the same.
For drives with endangered torsional vibration (drives with periodical load on torsional vibration) it is necessary to
make a torsional vibration calculation to ensure a perfect selection. Typical drives with endangered torsional
vibration are e. g. drives with diesel engines, piston pumps, piston compressors etc. On request KTR makes the
coupling selection and the torsional vibration calculation.
2.2 General Hints
Please read through these mounting instructions carefully before you set the coupling into operation.
Please pay special attention to the safety instructions!
The BoWex®coupling is suitable and approved for the use in hazardous areas. When using the
coupling in hazardous areas please observe the special hints and instructions regarding safety in
enclosure A.
The mounting instructions are part of your product. Please keep them carefully and close to the coupling.
The copyright for these mounting instructions remains with KTR Kupplungstechnik GmbH.
2.3 Safety and Advice Hints
STOP DANGER! Dangerofinjurytopersons.
! CAUTION! Damagesonthemachinepossible.
)A TTE NT IO N! Pointing to important items.
PRECAUTION! Hintsconcerningexplosionprotection.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
6
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
2 Hints
2.4 General Hints of Danger
STOP
DANGER!
With assembly, operation and maintenance of the coupling it has to be made sure that the
entire drive train is protected against unintentional engagement. You can be seriously hurt
by rotating parts. Please make absolutely sure to read through and observe the following
safety instructions.
•All operations on and with the coupling have to be performed taking into account "safety first".
•Please make sure to disengage the power pack before you perform your work.
•Protect the power pack against unintentional engagement, e. g. by providing hints at the place of engagement
or removing the fuse for current supply.
•Do not touch the operation area of the coupling as long as it is in operation.
•Please protect the coupling against unintentional touch. Please provide for the necessary protection devices
and caps.
2.5 Proper Use
You may only assemble, operate and maintain the coupling if you
•carefully read through the mounting instructions and understood them
•had technical training
•are authorized to do so by your company
The coupling may only be used in accordance with the technical data (see table 1 to 3 in chapter 1).
Unauthorized modifications on the coupling design are not admissible. We do not take any warranty for resulting
damages. To further develop the product we reserve the right for technical modifications.
The BoWex®described in here corresponds to the technical status at the time of printing of these mounting
instructions.
3 Storage
The coupling hubs are supplied in preserved condition and can be stored at a dry and roofed place for 6 - 9
months.
The features of the coupling sleeves remain unchanged for up to 5 years in case of favourable stock conditions.
!
CAUTION!
The storage rooms may not include any ozone-generating devices, like e. g. fluorescent
light sources, mercury-vapour lamps or electrical high-voltage appliances.
Humid storage rooms are not suitable.
Please make sure that there is no condensation. The best relative air humidity is under 65%.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
7
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
4 Assembly
Basically the coupling is supplied in individual parts. Before assembly the coupling has to be controlled for
completeness.
4.1 Components of the Couplings
Design from nylon
Components of BoWex®junior plug-in coupling design No. 001
Component Quantity Designation
1 1 hub
2 1 plug-in sleeve
3 2
setscrew
DIN EN ISO 4029
picture 5: BoWex®junior plug-in coupling
Components of BoWex®junior M coupling design No. 002
Component Quantity Designation
1 2 hub
2 1 sleeve
3 2
setscrew
DIN EN ISO 4029
picture 6: BoWex®junior M coupling
Design from steel/nylon
Components of BoWex®M coupling (size 14 - 65) design No. 003
Component Quantity Designation
1 2 hub
2 1 M-sleeve
3 2
setscrew
DIN EN ISO 4029
picture 7: BoWex®M coupling

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
8
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
4 Assembly
4.1 Components of the Couplings
Components of BoWex I coupling (size 80 - 125) design No. 006
Component Quantity Designation
1 2 hub
2 1 I-sleeve
1)
3 2 circlips1)
4 2
setscrew
DIN EN ISO 4029
1) Circlips and sleeve are delivered pre-assembled.
picture 8: BoWex®I coupling
4.2 Hint Regarding the Finish Bore
STOP
DANGER!
The maximum permissible bore diameters d (see
table 1 to 3 in chapter 1 - Technical Data) must not be
exceeded. If these figures are disregarded, the coupling
may tear. Rotating particles may cause serious danger.
•Hub bores (steel hubs) machined by the customer have to
observe concentric running or axial running, respectively
(see picture 9).
•Please make absolutely sure to observe the figures for dmax.
•Carefully align the hubs when the finish bores are brought
in.
•Please use a setscrew according to DIN EN ISO 4029 with a
cup point or an end plate to fasten the hubs axially.
picture 9: concentric running
and axial running
!
CAUTION!
The orderer is responsible for all subsequently made machinings to unbored or pilot bored
and to finish machined coupling parts and spare parts. KTR does not assume any warranty
claims resulting from insufficient refinish.
PRECAUTION!
Any mechanical rework to couplings that are used in hazardous areas require an explicit
release by KTR.
The orderer must send a drawing to KTR acc. to which the manufacture must be made. KTR
checks this drawing and returns it to the orderer with approval.
Table 4: setscrews
BoWex®size 14 1) 19
1) 24 1) 28 32 38 42 48 65 80 100 125
dimension G M5 M5 M5 M8 M8 M8 M8 M8 M10 M10 M12 M16
tightening torque TA[Nm 2 2 2 10 10 10 10 10 17 17 40 80
1) tightening torques of the BoWex ®junior plug-in coupling and BoWex®junior M coupling TA= 1,4 Nm

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
9
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
4 Assembly
4.3 Assembly of the Hubs
)ATTENTION!
We recommend to check bores, shaft, keyway and feather key for dimensional accuracy
before assembly.
Heating the hubs slightly (approx. 80 °C) allows for an easier installation onto the shaft.
PRECAUTION!
Please pay attention to the danger of ignition in hazardous areas.
STOP
DANGER!
Touching the heated hubs causes burns.
We would recommend to wear safety gloves.
!
CAUTION!
For the assembly please make sure that the distance dimension E (see table 2 and 3) is kept
to ensure that the sleeve can be moved axially.
Disregarding this hint may cause damage on the coupling.
•Assemble the hubs onto the shaft of driving and driven side.
•Move the power packs in axial direction until the dimension E is achieved.
•If the power packs are already firmly assembled, axial movement of the hubs on the shafts allows for adjusting
the dimension E.
•Fasten the hubs by tightening the setscrews DIN EN ISO 4029 with cup point (tightening torque see table 4).
4.4 Displacements - Alignment of the Couplings
The displacement figures shown in tables 5 and 6 offer sufficient safety to compensate for environmental
influences like, for example, heat expansion or lowering of foundation.
!
CAUTION!
In order to ensure a long lifetime of the coupling and to avoid dangers regarding the use in
hazardous areas, the shaft ends must be accurately aligned.
Please absolutely observe the displacement figures indicated (see tables 5 and 6). If the
figures are exceeded, the coupling is damaged.
The exacter the alignment of the coupling, the higher is its lifetime.
In case of a use in hazardous areas for the explosion group IIC (marking II 2GD c IIC T X),
only the half displacement figures (see tables 5 and 6) are permissible.
Please note:
•The displacement figures mentioned in tables 5 and 6 are maximum figures which must not arise in parallel. If
radial and angular displacement arises at the same time, the permissible radial displacements of the coupling
halves have to be reduced as follows:
Ww
Kw2 Kr
KrKrperm Δ•
Δ
Δ
−Δ=Δ
ΔWw = angular shaft displacement
•The displacement figures mentioned are general figures that apply up to an ambient temperature of 80 °C,
ensuring a sufficient service life of the BoWex®coupling.
Displacement figures between the speeds indicated have to be interpolated accordingly. If necessary, please
ask about the displacement for the corresponding coupling type.
•Please check with a dial gauge, ruler or feeler whether the permissible displacement figures of tables 5 and 6
can be observed.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
10
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
4 Assembly
4.4 Displacements - Alignment of the Couplings
angular displacements radial displacements axial displacements radial and angular
displacements
picture 10: displacements
Example for the misalignment
combinations given in picture 11:
Example 1:
ΔKr= 30 %
ΔKw= 70 %
Example 2:
ΔKr= 60 %
ΔKw= 40 %
ΔKtotal = ΔKr+ ΔKw≤100 %
picture 11:
combinations of
displacement
Table 5: Displacement figures
BoWex®junior plug-in coupling and BoWex®junior M coupling
coupling size 14 19 24
max. axial displacement ΔKa [mm] ±1 ±1 ±1
max. radial displacement with n=1500 1/min ΔKr [mm] 0,1 0,1 0,1
max. radial displacment with n=3000 1/min ΔKr [mm] 0,1 0,1 0,1
ΔKw max. angular displacement with n=1500 1/min [degree] 1,0 1,0 0,9
ΔKw max. angular displacement with n=3000 1/min [degree] 0,7 0,7 0,6
Table 6: Displacement figures
BoWex®design M and design I
coupling size 14 19 24 28 32 38 42 48 65 80 100 125
max. axial displacement ΔKa [mm] ±1 ±1 ±1 ±1 ±1 ±1 ±1 ±1 ±1 ±1 ±1 ±1
max. radial displacement
with n=1500 1/min ΔKr [mm] 0,30 0,30 0,35 0,35 0,35 0,40 0,40 0,40 0,45 0,45 0,45 0,45
max. radial displacment
with n=3000 1/min ΔKr [mm] 0,20 0,20 0,23 0,23 0,23 0,25 0,25 0,25 0,28 0,28 0,28 0,28
ΔKw max. angular displacement
with n=1500 1/min [degree] 1,0 1,0 0,9 0,9 0,9 0,9 0,9 0,9 0,7 0,6 0,6 0,4
ΔKw max. angular displacement
with n=3000 1/min [degree] 0,7 0,7 0,6 0,6 0,6 0,6 0,6 0,6 0,5 0,4 0,4 0,3

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
11
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
4 Assembly
4.5 Spares Inventory, Customer Service Addresses
A basic requirement to guarantee the operational readiness of the coupling is a stock of the most important spare
parts on site.
Contact addresses of the KTR partners for spare parts and orders can be obtained from the KTR homepage
under www.ktr.com.
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
design 003: hub / sleeve / hub
Enclosure A only valid for BoWex M coupling (type 003).
5.1 Use in Hazardous Areas According to the Regulations
Conditions of operation in hazardous locations
BoWex®couplings are suitable for the use according to EC standard 94/9/EC.
1. Industry (with the exception of mining)
•device class II of category 2 and 3 (coupling is not approved for device class 1)
•media class G (gases, fogs, steams), zone 1 and 2 (coupling is not approved for zone 0)
•media class D (dusts), zone 21 and 22 (coupling is not approved for zone 20)
•explosion class IIC (explosion class IIA and IIB are included in IIC)
Temperature class:
standard sleeve „light“ conductive sleeve „black“
Temperature class ambient or operating
temperature max. surface temperature 1) ambient or operating
temperature max. surface temperature 1)
T4, T3, T2, T1 - 30 °C to + 90 °C 120 °C 2) - 30 °C to + 100 °C 120 °C 2)
T5 - 30 °C to + 70 °C 90 °C - 30 °C to + 80 °C 100 °C
T6 - 30 °C to + 55 °C 75 °C - 30 °C to + 65 °C 85 °C
Explanation:
The maximum surface temperatures result from each the maximum permissible ambient or operating temperature Taplus the
maximum temperature increase ΔT of 30 K (standard sleeve “light”) and ΔT of 20 K (conductive sleeve “black”) which has to
be taken into account.
1) The ambient or operating temperature Tais limited to + 90 °C (standard sleeve “light”) and + 100 °C (conductive sleeve
“black”) due to the permissible permanent operating temperature of the sleeves used.
2) The maximum surface temperature of 120 °C applies for the use in locations which are potentially subject to dust
explosion, too.
2. Mining
Device class I of category M2 (coupling is not approved for device category M1).
Permissible ambient temperature - 30 °C to + 90 °C (standard sleeve “light”) and - 30 °C bis + 100 °C (conductive
sleeve “black”) respectively.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
12
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.2 Control Intervals for Couplings in Hazardous Areas
explosion group control intervals
3G
3D
For couplings which are classified in category 3G or 3D the operating and assembly
instructions that are usual for standard operation apply. During the standard operation
which has to be subject to the analysis of danger of ignition the couplings are free from any
ignition source. Merely the temperature increase produced by proper heating and
depending on the coupling type has to be considered:
for BoWex®: ΔT = 30 K (standard sleeve „light“)
for BoWex®: ΔT = 20 K (conductive sleeve „black“)
II 2GD c IIB
T4, T5, T6
A checking of the circumferential backlash and a visual check of the flexible sleeve must be
effected after 3,000 operating hours for the first time, after 6 months at the latest. Except
for centered, stiff connecting flanges (e. g. bellhousings).
If you note an unconsiderable or no wear at the sleeve after this first inspection, the further
inspections can be effected, in case of the same operating parameters, respectively after
6,000 operating hours or after 18 months at the latest.
If you note a considerable wear during the first inspection, so that a change of the sleeve
would be recommended, please find out the cause according to the table „Breakdowns“, as
far as possible.
The maintenance intervals must be adjusted according to the changed operating
parameters.
II 2GD c IIC
T4, T5, T6
A checking of the circumferential backlash and a visual check of the flexible sleeve must be
effected after 2,000 operating hours for the first time, after 3 months at the latest. Except
for centered, stiff connecting flanges (e. g. bellhousings).
If you note an unconsiderable or no wear at the sleeve after this first inspection, the further
inspections can be effected, in case of the same operating parameters, respectively after
4,000 operating hours or after 12 months at the latest.
If you note a considerable wear during the first inspection, so that a change of the sleeve
would be recommended, please find out the cause according to the table „Breakdowns“, as
far as possible.
The maintenance intervals must be adjusted according to the changed operating
parameters.
BoWex®coupling
picture 12: BoWex®coupling
Here the backlash between the hub and the nylon toothing must be checked by a torsional backlash, separately
from the drive and the driven end.
The friction / wear may only be Xmax. of the original toothing strength before the nylon sleeves must be
exchanged.
When reaching the torsional backlash ΔSmax, the nylon sleeve must be exchanged immediately, irrespective of
the inspection intervals.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
13
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.3 Checking of Torsional Backlash
!
CAUTION!
To check the torsional backlash the turned off drive aggregate must be secured against
unintended turning on.
Drive end
•Turn the hub in opposite direction to the direction of drive.
!
CAUTION!
Here the sleeve may not be axially displaced from its wear position.
•Mark sleeve and hub (see picture 13).
•Turn the hub in the direction of drive and measure the torsional backlash ΔSmax.
•When reaching the torsional backlash ΔSmax the nylon sleeve must be exchanged.
Driven end
•Turn the hub in the direction of drive.
!
CAUTION!
Here the sleeve may not be axially displaced from its wear position.
•Mark sleeve and hub (see picture 13).
•Turn the hub in opposite direction to the direction of drive and measure the torsional backlash ΔSmax.
•When reaching the torsional backlash ΔSmax the nylon sleeve must be exchanged.
picture 13: marking of the sleeve and the hub

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
14
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.4 Approximate Values of Wear
If the torsional backlash is ≥ΔSmax. [mm] / friction ≥Xmax. [mm], the nylon sleeves must be exchanged.
The reaching of the exchange values depends on the operating conditions and the existing operating parameters.
!
CAUTION!
In order to ensure a long lifetime of the coupling and to avoid dangers regarding the use in
hazardous areas, the shaft ends must be accurately aligned.
Please absolutely observe the displacement figures indicated (see tables 5 and 6). If the
figures are exceeded, the coupling is damaged.
picture 14: sleeve in new condition picture 15: wear of sleeve
Table 7:
limits of wear each hub limits of wear each hub
BoWex®
size friction
Xmax. [mm] torsional backlash
ΔSmax. [mm]
BoWex®
size friction
Xmax. [mm] torsional backlash
ΔSmax. [mm]
14 0,8 1,3 45 1,0 1,8
19 0,8 1,4 48 1,0 1,8
24 1,0 1,5 65 1,4 2,5
28 1,0 1,6 80 1,6 2,7
32 1,0 1,7 100 1,8 3,1
38 1,0 1,7 125 2,0 3,5
42 1,0 1,7
5.5 Permissible Coupling Materials in the Hazardous Area
explosion group permitted coupling materials / size
IIB BoWex M14 to M65 with sleeve material PA (light)
IIC BoWex M14 to M19 with sleeve material PA (light)
BoWex M14 to M65 with sleeve material PA12CF15 (black)
In the Explosion Groups IIB and IIC the following materials may be combined:
steel
stainless steel

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
15
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.6 Marking of Coupling for the Hazardous Area
The ATEX marking of the BoWex®curved-tooth gear couplings®is shown on the nylon sleeve.
•up to BoWex®M 32-C at the outer casing only sign
•form BoWex®M 38-C at the front
Complete labelling: II 2G c IIC T6, T5 bzw. T4
- 30 °C ≤Ta≤+ 65°C, + 80 °C bzw. + 100 °C
II 2D c T 120 °C - 30 °C ≤Ta≤+ 100 °C
I M2 c - 30 °C ≤Ta≤+ 100 °C
Short labelling: II 2GD c IIC T X/I M2 c X
The labelling with Explosion Group llC included the Explosion Group llB.
!
CAUTION!
Any mechanical rework to couplings that are used in hazardous areas require an explicit
release by KTR.
The orderer must send a drawing to KTR acc. to which the manufacture must be made. KTR
checks this drawing and returns it to the orderer with approval.
5.7 Starting
Before putting the coupling into operation, check the tightness of the setscrews in the hubs, the alignment and the
distance dimension E and correct, if necessary, and also check all screw connections regarding the stipulated
tightening torques dependent on the type of coupling.
If used in hazardous areas the grub screws to fix the hub as well as all screw connections must be
additionally secured against self-loosening, e. g. glue with Loctite (medium strength).
Last but not least, the coupling protection against unintended contact must be fixed.
The cover must be electrically conductive and be included in the equipotential bonding. Bellhousings (magnesium
part below 7,5 %) made from aluminium and damping rings (NBR) can be used as connecting element between
pump and electro motor. The cover may only be taken off after having stopped the unit.
During operation, please pay attention to
•strange running noises
•occurring vibrations.
If the couplings are used in dust explosive areas and in mining the user must make sure that there is no
accumulation of dust in a critical quantity between the cover and the coupling. The coupling must no operate in
an accumulation of dust.
For covers with unlocked openings on the upper side no light metals may be used if the couplings are used as
appliances of appliance group ll (if possible, from stainless steel).
If the couplings are used in mining (appliance group l M2), the cover must not be made from light metal. In
addition, it must be resistant to higher mechanical loads than if it is used as appliance of appliance group ll.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
16
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.6 Starting
The minimum distance of the protection device to the rotating parts must be at least 5mm.
If the protection device is used as cover, regular openings complying with the explosion protection demands can
be made that must not exceed the following dimensions:
form of the openings
circular openings
diameter in mm rectangular openings side length in mm
straight or bended slot distance
of the side limit
in mm
top surface of the covering 4 4 prohibited
side parts of the covering 8 8 8
!
CAUTION!
If you note any irregularities at the coupling during operation, the drive unit must be turned
off immediately. The cause of the breakdown must be found out with the table
„Breakdowns“ and, if possible, be eliminated according to the proposals. The possible
breakdowns mentioned can be hints only. To find out the cause all operating factors and
machine components must be considered.
Coupling layer:
If coated (priming, painting etc.) couplings are used in hazardous areas, the requirements to
conductability and layer thickness must be considered. In case of paintings up to 200 µm no
electrostatic load can be expected. Multiple coatings that are thicker than 200 µm are prohibited
for explosion group llC.
5.8 Breakdowns, Causes and Elimination
The below-mentioned errors can lead to an incorrect use of the BoWex®coupling. In addition to the stipulations
in these operating and mounting instructions please make sure to avoid these errors.
The errors listed can only be clues to search for the errors. When searching for the error the adjacent
components must be generally included.
Due to incorrect use the coupling can become a source of ignition.
EC Standard 94/9/EC requires a special care from the manufacturer and the user.
General errors incorrect use
•Important data for the coupling selection was not forwarded.
•The calculation of the shaft/hub connection was not considered.
•Coupling parts with damage occurred during transport are assembled.
•If the heated hubs are assembled, the permissible temperature is exceeded.
•The fits of the parts to be assembled are not coordinated with each other.
•Tightening torques are below/exceeded.
•Components are exchanged by mistake/put together incorrectly.
•No original KTR parts (purchased parts) are used.
•Old sleeves/already worn out sleeves or sleeves stored too long are used.
•The coupling used/the coupling protection used is not suitable for the operation in hazardous areas and does
not correspond to EC Standard 94/9/EC, respectively.
•Maintenance intervals are not observed.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
17
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.8 Breakdowns, Causes and Elimination
breakdowns causes danger hints for
hazardous areas elimination
misalignment
micro friction at the
toothing of the nylon
sleeve
danger of ignition due
to hot surfaces
1) put the unit out of operation
2) eliminate the reason for the
misalignment (e. g. loose foundation
bolts, break of the engine fixing, heat
expansion of unit components, change
of the assembly dimension E of the
coupling)
3) checking of wear see under point
Control
change of the
running noises
and / or occurring
vibrations
loose screws for
axial securement of
hubs
danger of ignition due
to hot surfaces
1) put the unit out of operation
2) check alignment of coupling
3) tighten the screws to secure the hubs
and secure against self-loosening
4) checking of wear see under point
Control
break of the nylon
sleeve / toothing
due to high shock
energy / overload
---
1) put the unit out of operation
2) disassemble the coupling and remove
rests of the sleeve
3) check coupling parts and exchange
damaged coupling parts
4) insert sleeve, assemble coupling parts
5) find out the reason of overload
operating
parameters do not
correspond to the
performance of the
coupling
---
1) put the unit out of operation
2) check the operating parameters and
select a larger coupling (consider
installation space)
3) assemble new coupling size
4) check alignment
break of the nylon
sleeve / toothing
mistake in service of
the unit ---
1) put the unit out of operation
2) disassemble the coupling and remove
rests of the sleeve
3) check coupling parts and exchange
damaged coupling parts
4) insert sleeve, assemble coupling parts
5) instruct and train the service staff

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
18
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.8 Breakdowns, Causes and Elimination
breakdowns causes danger hints for
hazardous areas elimination
drive vibrations danger of ignition due
to hot surfaces
1) put the unit out of operation
2) disassemble the coupling and remove
rests of the sleeve
3) check coupling parts and exchange
damaged coupling parts
4) insert sleeve, assemble coupling parts
5) check alignment, correct if necessary
6) find out the reason for the vibrations
ambient / contact
temperatures which
are too high for the
sleeve, max.
permissible
e. g. T4 =
-30 °C / +100 °C
danger of ignition due
to hot surfaces
1) put the unit out of operation
2) disassemble the coupling and remove
rests of the sleeve
3) check coupling parts and exchange
damaged coupling parts
4) insert sleeve, assemble coupling parts
5) check alignment, correct if necessary
6) check and regulate ambient / contact
temperature
excessive wear at
the sleeve toothing
e. g. contact with
aggressive liquids /
oils, ozone-
influence, too high
ambient
temperatures etc.
effecting a physical
change of the
sleeve
---
1) put the unit out of operation
2) disassemble the coupling and remove
rests of the sleeve
3) check coupling parts and exchange
damaged coupling parts
4) insert sleeve, assemble coupling parts
5) check alignment, correct if necessary
6) make sure that further physical changes
of the sleeve are excluded
If you operate with a worn sleeve (see item 5.2) a due operation meeting the explosion protection
requirements and acc. to Standard 94/9/EC is not ensured.
)ATTENTION!
KTR does not assume any liabilities or guarantees regarding the use of spare parts and
accessories which are not provided by KTR and for the damages resulting herefrom.

KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex®
Operating-/Assembly Instructions
Design 001, 002, 003 and 006
KTR-N
sheet:
edition:
40110 EN
19
8
Gezeichnet: 27.06.08 Sha/Hk Ersatz für: KTR-N vom 17.01.03Schutzvermerk
ISO 16016 beachten. Geprüft: 30.06.08 Sha Ersetzt durch:
5 Enclosure A
Hints and Instructions Regarding the Use in Hazardous Areas
5.9 EC Certificate of Conformity
EC Certificate of Conformity
corresponding to EG Standard 94/9/EG dated 23 March 1994
and to the legal regulations
The manufacturer - KTR Kupplungstechnik GmbH, D-48432 Rheine - states that the
BoWex®- curved-tooth gear couplings®
described in these mounting instructions and explosion-proof designed correspond to Article 1 (3) b)
of Standard 94/9/EG and comply with the general Safety and Health Requirements according to
enclosure II of Standard 94/9/EG.
According to article 8 (1) of Standard 94/9/EG the technical documentation is deposited with the:
IBExU
Institut für Sicherheitstechnik GmbH
Fuchsmühlenweg 7
09599 Freiberg
Rheine, 27.06.08 i. V. i. V.
Date Reinhard Wibbeling
Engineering Manager
Josef Schürhörster
Product Manager