Maintenance
9.2 Inspection and maintenance
1LA5/6/7/9, 1LG4/6, 1MA6/7, 1MB..1/2/3/4/5 - SH 63 ... 355
116 Operating Instructions, 06/2018, A5E44455710A
When carrying out the inspection, if you detect any impermissible deviations from the
normal state, you must rectify them immediately. They may otherwise cause damage to the
machine.
Assessing the rolling bearings
To assess the rolling bearings, it is generally not necessary to dismantle the machines. The
motor only has to be dismantled if the bearings are to be replaced.
The state of a rolling bearing can be assessed by analyzing the bearing vibration. The
measured values provide an indication and can be assessed by specialists. In this case,
please contact the Service Center.
Mechanical explosion protection for rolling bearings
All machines marked in accordance with Directive 2014/34/EU ("Explosion Protection
Directive") must be regularly inspected for mechanical damage which could constitute a risk
of ignition in accordance with IEC/EN 60079-17 .
● Comply with the following intervals:
– Bearing replacement intervals
– Relubrication intervals
– Grease replacement intervals
– Oil change intervals
● Rolling bearing service life
– Replace the rolling bearings once the nominal service life is reached. Alternatively,
you can verify they are free of mechanical damage as part of an inspection.
– In the case of rolling bearings without a regreasing system, it is ensured that the
nominal service life will only be achieved clearly after achievement of the service life of
the grease in the bearings.
– The rolling bearing service life under full specified load is at least 20 000 hours for
machines subject to radial or axial forces.
– The nominal rolling bearing service life of machines which are not subject to any
forces is at least 40 000 hours.
● For rolling bearings with external oil supply, monitor that lubrication is maintained.
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