| Remarks to the subject bearing change / service: |
When
purchasing a turbine it is often forgotten or not considered to have a
turbine serviced. Turbine users should keep this aspect clearly in mind to
avoid potential damages following !
To
have an idea about the mechanical strain, say slowly „21“ and during
this time the rotor unit of the turbine has rotated approx. 2.000 times
around its own axis at full load (approx. 120.000/rpm) !!!
Adding to this thermal strain in the area of the turbine wheel,
which is not even insubstantial !
Unimaginable
? No, I think it is fantastic !
This
short description shows, that we deal with extreme heavily loaded spare
parts in the turbines, which should be checked for a failure-free
operation from time to time. Each producer has envisaged a „time-change
of the bearing after a test run. The allowed time can be 10 – 20 hrs but
up to 25 hrs as well !
| Therefore
have the turbine cleaned and the bearings changed on time ! |
 |
Bearings
from larger turbines, e.g. 70 mm wheels are stronger loaded than 60
mm ones ! The kind of the airfield plays also a role, which should
not be misprized. What we mean is that if dirt, dust, sand and grass
will be absorped, the bearing gets faster defective and the turbine
easier contaminated, which causes power losses or turbine damages ! |
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