KSB Sewatec - Shaft and Bearing Installation

7 Servicing/Maintenance
64 of 96
Sewatec
Bearing bracket size Angular contact ball
bearings
DIN628 (320.02)
Cylindrical roller bearing
DIN5412 (322.01)
S09 2x 01373252 NU 234 ECM
S10 2x 7334 BCBM NU 240
Checking the alignment
After assembly with the pump casing that has remained in the piping, check the
coupling alignment.
7.5.2 Installing the shaft and rolling element bearings
WARNING
Components heated up for installation
Risk of burns to hands!
▷ Wear protective gloves suitable for installation work.
▷ Let components cool down after installation.
210
322.01
320.02
931.01
920.21
Fig.38: Mounting the rolling element bearings on the shaft
ü When re-installing the shaft, replace angular contact ball bearings 320.02 or
cylindrical roller bearing 322.02, if required.
1. Place shaft 210 in a horizontal position. Debur keyway and ring joints, if
required.
2. Clean the shaft and coat the bearing seats with a preservative.
3. Heat the inner ring of cylindrical roller bearing 322.01 up to 100 °C and slide it
onto the shaft from the pump end until it abuts against the shaft shoulder.
4. Heat the first angular contact ball bearing 320.02 up to 100 °C and slide it onto
the shaft from the drive end until it abuts against the shaft shoulder.
5. Heat the second angular contact ball bearing 320.02 up to 100 °C and slide it
onto the shaft from the drive end until it abuts against the first bearing. Press
them back in as they cool down!
NOTE
Install angular contact ball bearings 320.02 in "O" arrangement.
6. Once the angular contact ball bearings have cooled down, coat the shaft thread
with an assembly paste (e.g. ALTEMP Q NB 50).
7. Slip on lock washer 931.01. Screw on, tighten and lock locknut 920.21.
8. Completely pack the angular contact ball bearings with lubricating grease.
(ðSection7.2.3.1,Page47)