Internal Fan; Roller-Contact Bearings; Uninstalling Roller-Contact Bearings - Siemens SIMOTICS TN Series Operating & Installation Instructions Manual

Maintenance
9.2 Corrective Maintenance
9.2.7

Internal fan

The internal fan is located on the rotor inside the machine. If the internal fan is defective or
must be replaced, please contact the Service Center (Page 137).
9.2.8

Roller-contact bearings

9.2.8.1

Uninstalling roller-contact bearings

Preparation
● Remove any grease feeders, shock pulse measurement equipment and possibly mounted
● Remove the coupling on the drive end or make the shaft extension freely accessible.
● At the NDE, proceed as follows:
Note
For a schematic diagram of the respective component layout, see the chapter "Spare parts
(Page 119)".
Procedure
1. Remove the bearing mounting components.
2. Pull off the roller bearing together with the grease slinger.
112
instrumentation at the DE and NDE.
– First, uninstall the fan cowl or external fan cowl.
Fan cowl (Page 110)
External fan cowl
– Remove the external fan.
External fan made of metal (Page 110)
External fan made of plastic (Page 111)
– Remove the outer bearing cover if one is being used.
Remove V ring (Page 113).
Removing the labyrinth sealing ring (Page 113).
– Ensure that the inner bearing cover is no longer attached to the bearing housing or end
shield.
– Support the rotor for the removal of bearing housing or end shield.
– If necessary, remove the bearing housing from the end shield.
– Remove the end shield. Depending on the shaft height, roller bearing type and design,
it is either a bearing head version or a bearing housing version.
– Remove the locking ring from the shaft.
SIMOTICS TN Series N-compact 1LL8
Operating Instructions 11/2018