72 | 180R9346 | AQ240486503020en-001702
© Danfoss | 2023.03
Operation guide
Installation, Operation and Maintenance APP 53-92 pumps
BoWex-ELASTIC
®
Operating/Assembly instructions
Type HEW, HEW Compact and HEW-ZS
KTR-N
Sheet:
Edition:
40114 EN
12 of 22
7
Please observe protection
note ISO 16016.
Drawn:
2017-04-24 Shg/Hk
Replacing:
KTR-N dated 2013-06-10
Verified:
2017-04-24 Shg
Replaced by:
Valid for type HEW only!
Mount the elastomer part (component 1) in front of the coupling flange (component 4) and screw the components
at the tightening torques T
A
specified in table 11.
Table 11: Cap screws DIN EN ISO 4762
Size
42
48
65
80
G 80 100
125 G 125 150 G 150 200 G 200
Tightening torque
T
A
[Nm]
14
14
35
69
69
120
120
120
295
295
410
410
Position the elastomer part (component 1) in front of the flange hub with additional flange or coupling flange.
Hand-tighten the components first. Afterwards tighten the screws at the tightening torque T
A
specified in table
11.
Valid for type HEW Compact only!
Mount the coupling flange (component 4) in front of the elastomer part (component 1) and screw the components
at the tightening torques T
A
specified in table 12.
Table 12: Cap screws DIN EN ISO 4762
Size
42
65
80
100
125
Tightening torque
T
A
[Nm]
14
69
120
120
250
If used in potentially explosive atmospheres the setscrews to fasten the hubs as well as all
screw connections must be secured against working loose additionally, e. g. conglutinating
with Loctite (average strength).
!
Please observe the manufacturer’s instructions regarding the use of adhesives.
Do not apply glue on the rubber surfaces.
The
BoWex-ELASTIC
®
HEW
couplings accept a position deviation of the machine parts to be connected up to
the data specified in table 13.
With alignment, the radial and angular displacement should be kept as small as possible, because the service life
is increased in this way if the operating conditions are otherwise maintained.
The
BoWex-ELASTIC
®
HEW
coupling has to be aligned from the coupling hub on the shaft side towards one of
the machined surfaces of the flange hub.
!
In order to ensure a long service life of the coupling and avoid danger with the use in poten-
tially explosive atmospheres, the shaft ends must be accurately aligned.
Please absolutely observe the displacement figures specified (see table 11).
If the figures are exceeded, the coupling will be damaged.
The more accurate the alignment of the coupling, the longer is its service life.
If used in hazardous areas for the explosion group IIC (marking II 2GD c IIB T X), only half of
the displacement figures (see tables 13 and 14) are permissible.
4
Assembly
4.3 Assembly of the coupling
4.4 Displacements - alignment of the couplings