Maintenance
7.3 Corrective Maintenance
A5E00215731A AD
62 Siemens AG Operating Instructions 2.02 1PL618
Installing the active parts of the bearings
NOTICE
Before mounting the bearings, ensure that the parts and components that are to be located
on the shaft inside the bearing have been mounted beforehand!
To fit the bearings on the shaft, heat them up to about 80°C in oil or air.
Then push the bearings onto the shaft up to its shoulder.
NOTICE
Avoid any heavy blows that might damage the bearings.
Fill the bearings with specified grease (see section entitled "Types of grease") until it is flush.
Also observe the following installation condition:
● If rotary shaft seals without helical springs are installed, the replacement part must also
be installed without a spring.
[ID: 378.01]
7.3.4 Screw-type connections
Tightening torque for screwed union connections
The screwed union connections with metal contact surfaces (end shields, active bearing
parts, terminal box parts bolted onto the stator frame) should be tightened to the following
torque with a tolerance of ± 10 %, depending on the thread size.
Table 7-3 Tightening torque for screwed union connections
Thread size M6 M8 M10 M12 M16 M20 M24
Tightening torque [Nm] 8 20 40 70 170 340 600
Please refer to the relevant sections and drawings for all other tightening torques (electrical
connections and bolted connections for parts with flat gaskets).
Bolt locking devices
Nuts or bolts that are mounted together with locking, resilient and/or force-distributing
elements (e.g., safety plates, spring-lock washers, etc.) must be refitted together with
identical, fully functional elements.
Always replace keyed elements.
[ID: 379.01]
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