Main shaft and bearing
Repair manual
8
KM/285/EN/1.1.0
Figure 8. Removing the bearings from the bearing housing
Mechanical seal
The mechanical seal consists of several parts (figure 9).
Figure 9. Cross-section of the mechanical seal
A
Static slip-ring seal
B
Static slip-ring
C
Rotating slip-ring
D
Spring for pressing the sealing faces against each other
E
Rubber bellows
F
Sealing support ring
The slip surfaces are of silicon carbide, which is an extremely durable
material. In order to achieve a high level of sealing, the surfaces must be
perfectly smooth. If the slip surfaces show signs of mechanical damage, the
seal must be replaced.
The water on the outside and the oil in the bearing housing both lubricate and
cool the slip surfaces.
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