21
Pump Typ Z
Version: 27215 -G.1
Schmalenberger GmbH + Co. KG
D-72072 Tübingen / Germany
•
During assembly tighten screw connec-
tions crosswise. Use a torque wrench
for this.
The following table shows the
torque
to be
applied for standard DIN 13 thread.
The figures apply to new, ungreased
screws. The table values do not apply if
deviating values are specified on the
general diagrams or due to other
instructions.
5.2.8
Bearing support
If your pump is equipped with an IEC norm-
motor (described as option “B”) as the
drive, then between the cover plate and the
motor there is a bearing support for
supporting the pump shaft and coupling.
There are two types of connecting
integrated in the pumps.
Version 1: Bearing bracket with 1 ball
bearing
Version 2: Bearing pedestal with 2 ball
bearings and coupling
The bearings are sealed and filled with a
grease that cannot be replenished. The
coupling is designed to have a long service
life under normal usage.
To change the coupling or a bearing,
proceed as follows:
Version 1:
•
Remove 1 protective plate pos. 598
from the bearing retainer pos.330. Loo-
sen the threaded rod pos. 904 on the
shaft if one is present.
•
Dismantle the pump as described in
sections 5.2.4 and 5.2.5 to replace the
ball bearing.
•
Loosen the bearing retainer pos. 330.
Use the extraction thread and screws
pos. 901 for this. Pull the shaft pos. 215
and ball bearing pos. 326 off the motor
pos. 801.
•
Remove the retaining ring pos. 932.02
and pull the shaft and ball bearing out of
the bearing retainer.
•
Remove the retaining ring pos. 932.01
from the shaft and pull off the ball bea-
ring.
Version 2:
•
Loosen the drive of the bearing support
pos. 331. Remove the motor pos. 801
together with the upper half coupling.
Now you can replace the inner coupling
part pos. 840.
•
To replace the ball bearings pos. 321
and pos. 321.01 the pump has to be re-
moved and dismantled as described in
sections 5.2.4 and 5.2.5.
•
Next dismantle the bearing stub to-
gether with the shaft pos. 211 from the
cover plate pos. 167.
•
Remove the retaining rings pos. 932
from the shaft pos. 211 and from the
bearing support. Dismantle the ball
bearings pos. 321 and 321.01.
•
Be sure to clean all parts in advance
and check them for damage or wear.
Replace defective parts! Assemble the
parts in reverse order.
Thread:
Torque [Nm] for screws:
to plastic
parts
to cast parts
to bright
steel parts
M8
7
10 - 15
20
M10
8
25 - 35
40
M12
10
30 - 40
70
M16
--
60 - 90
160
M20
--
80 - 110
--
