Avoidance Of Damage To Rolling Bearings During Stoppages - Siemens SIMOTICS XP Operating Instructions Manual

Operation
8.5 Stoppages
Lubricating before recommissioning
NOTICE
Dry running bearings
Bearings can be damaged if they do not have sufficient grease.
• Re-grease the bearings if they have been out of service for more than one year. The shaft
• More information can be found in Chapter AUTOHOTSPOT.
Explosion hazard
If the anti-condensation heating is switched on directly after the machine is switched off,
the temperature class or the maximum surface temperature of the machine can be
exceeded.
In an explosive atmosphere, there is a risk of an explosion. This can result in death, serious
injury or material damage.
• Only switch on the anti-condensation heating after the motor has been switched off.
8.5.1

Avoidance of damage to rolling bearings during stoppages

Extended stoppages at the identical or almost identical resting position of the rotor in the
rolling bearings can result in damage, such as brinelling or corrosion.
• During stoppages, regularly start up the machine for a brief period once a month. As a
minimum, turn the rotor several times.
If you have uncoupled the machine from the driven machine and secured the rotor with a
rotor shipping brace, then remove this before turning the rotor over or starting up the
machine.
Make sure that the resting position of the rotor after the rotor has been turned over is
different from its previous position. Use the fitted key or the coupling halves as reference
markers.
• When recommissioning, carefully comply with the information in Chapter "Commissioning
(Page 83)".
98
must rotate so that the grease can be distributed in the bearings. Follow the instructions
on the lubricant plate.
WARNING
Comply with the data stamped on the plate of the anti-condensation heating, if
available.
1MB..5/6 shaft height 71 ... 355
Operating Instructions, 10/2021, A5E41926185A