Installing Rolling Bearings - Siemens SIMOTICS XP Operating Instructions Manual

Maintenance
9.2 Corrective Maintenance
Explosion hazard due to overheating of the rolling bearings
If the rolling bearings are not regularly regreased, local overheating may be possible, and, as
a consequence, an explosion in an explosive atmosphere. This can result in death, serious
injury, or material damage.
• Regrease the rolling bearings regularly according to the lubrication plate.
• Implement bearing temperature monitoring if not yet in existence.
9.2.3.1

Installing rolling bearings

• Extreme caution and attention to cleanliness are vital when installing rolling bearings.
Observe the correct assembly sequence of the components.
• Attach all components with the specified tightening torques (Page 145).
• For individually mounted angular contact ball bearings, carefully comply with the
installation position corresponding to the permissible direction of force.
• Angular contact ball bearings arranged in pairs must always be installed in strict
compliance with the manufacturer's specifications.
• Always use angular contact ball bearings of the same type.
Note
For further information about mounting the rolling bearing, please refer to the catalog or the
information provided by the rolling bearing manufacturer.
Procedure
1. Replace the damaged components.
2. Remove any dirt from the components. Remove any grease and the remains of sealant or
liquid threadlocker.
3. Prepare the bearing seats:
– Lightly oil the inner ring seat.
– Grease the outer ring seat with a solid lubricant such as Altemp Q NB 50.
– Press the inner bearing cover onto the shaft.
4. Warm up the rolling bearing.
118
WARNING
1MB..5/6 shaft height 71 ... 355
Operating Instructions, 10/2021, A5E41926185A