48 | 180R9346 | AQ240486503020en-001702 © Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
b = a + 32.5 mm ± 2 mm
If used in potentially explosive atmos-
pheres the setscrews to fasten the hubs
as well as all screw connections must be
secured against working loose addition-
ally, e.g. conglutinating with Loctite
(average strength).
Please observe the manufacturer’s
instructions regarding the use of adhe-
sives. Do not apply glue on the rubber
surfaces.
3.3.1 Mounting
1. Mount the coupling ange (component 4)
in front of the elastomer part (component
1) and screw the components together
with a tightening torque of 120 Nm.
Lubricate inside the coupling hubs (not the
shafts).
3. Push the coupling part all the way down to
the shoulder of the pump shaft and secure
with right torque on the locking screws.
Measure the distance “a” from the end of
the bell housing to the end of the toothing
of the coupling.
4. Mount the coupling on motor shaft
without using hammer. If needed then
polish motor shaft/key and inside coupling
hub.
5. On the motor shaft position the coupling
so that the length from the end of the
coupling to the end of the motor ange is
“b= a+32.5 mm” ± 2 mm.
6. Secure coupling on motor shaft with the
right torques on the locking scre+ws.
7. Connect carefully pump/bell housing to
motor. Turn motor shaft so coupling tooths
can interact.
8. Mount motor ange bolts to bell housing
and tighten with the right torque.
9. Check coupling space. The pump coupling
should be in a position so there is still
3-7 mm space.
If alternative mounting is desired, please contact
Danfoss High Pressure Pumps.
Please take care to observe the recommended
length tolerances of the chosen coupling, as an
axial force on the pump will damage the pump.
2. Mount the bell housing on pump. Secure
nuts with the right torque.
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