Replacing Bearings In Explosion-Proof Machines; Dismantling - Siemens SIMOTICS SD Operating Instructions Manual

Maintenance
9.4 Corrective maintenance
9.4.2.2

Replacing bearings in explosion-proof machines

● When changing the bearings, renew the sealing rings and only use original Siemens
spare parts.
● When installing the sealing rings for the motor series 1LA., 1MA.06. to 20., 1MJ6., fill
completely the space in the sealing ring and in the end shield hub with a suitable type of
grease.
9.4.3

Dismantling

Note
Before commencing disassembly, you should mark how each of the fastening elements has
been assigned, as well as how internal connections are arranged. This simplifies subsequent
reassembly.
Fan
Take care not to damage the snapping mechanisms on fans that are equipped with these.
To ensure this, the fans should be heated to a temperature of approximately 50 °C around
the area of the hub. If any damage is caused, request new parts.
Fan cover
● Carefully lever the snap openings on the cover out of the snap-in lugs one after the other;
do not apply the lever directly under the web (risk of breakage).
● Do not damage the snap mechanisms. If any damage is caused, request new parts.
Canopy; incremental encoder under the canopy
Loosen the fixing screws on the external surface of the protective cover.
Under no circumstances should the spacing bolts or the mounting bracket be disassembled
or forcibly separated from each other or the cover. Forcibly removing or separating can
destroy the distance bolts, the connecting elements of the mounting bracket or the fan cover.
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Operating Instructions, 05/2014, 5 610 00000 02 000
Low-voltage motors