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NOTICE
Machine damage
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.
7.1.5
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.
7.1.6
Bolt grade
Check that all the bolts for attaching the end shields, bearing covers, gland
plates, and terminal boxes are present and properly tightened. Replace
damaged bolts with identical bolts of a perfect quality.
7.1.7
Mechanical explosion protection for rolling bearings
All machines marked in accordance with local directives 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
Frame size
71 ... 355
Bolt grade for ambient temperature T
≥ -40 ºC
Standard
8.8
u
Stainless steel bolts
A4-70/A4-80
129
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