9.3.3 Fundamentals
Note
Before commencing removal, you should mark how each of the fastening elements has been
assigned, as well as how internal connections are arranged. This simplies subsequent
reassembly.
If possible, assemble the machine on and alignment plate. This ensures that the mounting feet
surfaces are all on the same plane.
Avoid damaging the windings protruding out of the stator enclosure when assembling the end
shield.
Sealing measures
1. For 1MB10, shaft heights 100...160, apply the appropriate liquid sealant, e.g. Fluid-D or
Hylomar to the centering edge.
2. Check the terminal box seals, and if required, replace these.
3. Repair any damage to the paint, also to screws/bolts.
4. Take the necessary measures to ensure compliance with the applicable degree of protection.
5. Do not forget the foam rubber cover in the cable entry. Completely seal the holes, and ensure
that cables do not come into contact with sharp edges.
9.3.4 Rolling bearings
Refer to the rating plate or the catalog for the designations of the bearings being used.
Bearing lifetime
Prolonged storage periods reduce the useful lifetime of the bearing grease. For permanently
lubricated bearings, this reduces the bearing service life.
We recommend that the grease is replaced after a storage time of 12 months. Replace greased
bearings also in the case of closed bearings (sux 2Z or 2 RS). After 4 years in storage, generally
replace all rolling bearings and grease.
Replacing bearings
Recommended interval after which bearings are to be replaced under normal operating
conditions:
Table 9-4 Bearing replacement intervals
Ambient temperature Principle of operation Bearing replacement intervals
40°C Vertical coupled operation 20000 h
40°C Horizontal coupled operation 40000 h
40°C With axial and radial forces 20000 h
Maintenance
9.3Corrective maintenance
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 11/2023, A5E52779900A 129
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