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9.2.6
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 . For USA/CANADA, CSA C22.2 or NFPA70,
Article 500 apply.
• 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 has been reached.
– In the case of rolling bearings without a regreasing system, it is ensured that the
– For machines that are subject to radial or axial forces, the rolling bearing service life at
– The nominal rolling bearing service life of machines that are not subject to any forces is
• For rolling bearings with external oil supply, monitor that lubrication is maintained.
9.2.7
Maintenance intervals
Please note the following in order to identify faults at an early stage, rectify them and avoid
follow-on damage:
• Maintain the machine regularly and carefully.
• Inspect the machine.
• Motors must be allocated a revision/inspection number after inspection.
1MB1.33 Eagle Line shaft heights 71 ... 315
Operating Instructions, 08/2023, A5E52990459A
Alternatively, you can verify they are free of mechanical damage as part of an
inspection.
nominal service life will only be achieved clearly after achievement of the service life of
the grease in the bearings.
the full, specified load is at least 20 000 when operated on 50 Hz line supplies.
at least 40 000 hours when operated on 50 Hz line supplies.
NOTICE
Motor failure
Material damage can occur if the machine develops faults or is overloaded.
• Immediately inspect the machine if faults occur.
• An immediate inspection is especially necessary, if the three-phase motor is
excessively stressed, either electrically or mechanically (e.g. overload or short-circuit).
Maintenance
9.2 Inspection and maintenance
129
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