KTR Kupplungstechnik
GmbH
D-48407 Rheine
BoWex-ELASTIC
®
Operating/Assembly Instructions
Type HEW and HEW-ZS
KTR-N
Sheet:
Edition:
40114 EN
10 of 20
5
Drawn:
08.11.11 Pz/Hk
Replaced for:
KTR-N valid from 08.04.04
Please note protection
mark ISO 16016.
Verified:
09.11.11 Pz
Replaced by:
4 Assembly
4.3 Assembly of the Coupling
Put the elastomer part (component 1) in front of the flange hub with additional flange or coupling flange.
Screw the parts hand-tight for the time being. Afterwards tighten the screws at the tightening torque T
A
mentioned in table 9.
!
C A U T I O N !
For the assembly please make sure that the hub toothing is covered completely by the
internal toothing of the elastomer part. (Please observe the assembly dimensions L
HEW1
,
L
HEW2
or L
HEW-ZS
.)
Disregarding this hint may cause damage on the coupling.
Table 9: cylinder head screws DIN EN ISO 4762
Size
42 48 65 80
G
80
100
125
G
125
150
Tightening torque
T
A
[Nm]
14 14 35 69 69 120
120
120
295
P R E C A U T I O N !
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).
!
C A U T I O N !
Please observe the manufacturer´s instructions when using the glue.
Do not put any glue onto the rubber surfaces.
4.4 Displacements - Alignment of the Couplings
The
BoWex-ELASTIC
®
HEW
couplings accept a deviation of position of the machine parts to be connected up to
the data indicated in table 10.
In case of the alignment, the radial and angular displacement should be as small as possible, because the
lifetime is increased hereby under the same operating conditions.
The alignment of the
BoWex-ELASTIC
®
HEW
coupling has to be effected from the shaft-sided coupling hub to
one of the processed surfaces of the flange hub.
!
C A U T I O N !
In order to ensure a long service life 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 table 10). If the figures
are exceeded, the coupling is damaged.
The more accurate 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 half of the displacement figures (see table 10) are permissible.
