Roller-Contact Bearings; Removing Roller Bearing; Figure 9-2 External Fan Made Of Welded Sheet Steel - Siemens SIMOTICS FD 1LM1 Operating Instructions Manual

Maintenance
9.2 Corrective Maintenance
Disassembling
1. Unscrew the air inlet nozzle.
2. Loosen the crews that fasten the fan impeller to the hub and pull the fan impeller off.
3. Warm up the fan hub, e.g. using a flame and pull the hot fan hub off with a puller.
Assembly
1. Clean the shaft and the hub before fitting the impeller and grease them lightly.
2. Warm up the fan hub, e.g. using a flame. Push on the warm fan hub.
3. Screw the fan impeller to the hub.
4. Attach the air inlet nozzle. The distance between external fan and air inlet nozzle must be
9.2.4

Roller-contact bearings

9.2.4.1

Removing roller bearing

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 depending on the machine type:
126
Figure 9-2 External fan made of welded sheet steel
≥ 2 mm evenly over the circumference.
instrumentation at the DE and NDE.
– First, remove the fan cowl (Page 124) or external fan cowl.
– Remove the external fan (Page 125).
SIMOTICS FD 1LM1
Operating Instructions 01/2019