Industrial shaft seals

gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21,
Industrial
факс
shaft seals
(495) 22
Circumferential and rotational speed
The permissible rotational speeds are
determined by the diameter of the sealing
surface and the permissible circumferential
speeds at the sealing position.
The permissible circumferential speeds
depend mainly on the design and material of
the sealing lip which govern the heat
generation at the seal contact. They also
depend on the material and condition of the
counterface. The lubrication of the lip as well
as the type and characteristics of the medium
being sealed also have an influence, as the
medium may be able to transport heat away
from the lip contact.
Diagram 1 shows a comparison of the
permissible circumferential speeds for various
seal designs assuming normal seal operation,
e.g. grease or oil retention and no pressure
differential across the seal.
HDDF
CRS
HMS
CRW
HDS
HS
non-split
HS
split
VR
CT
1)
1)
0 5 10 15
20
1) Rotating counterface
Circumferential speed, m/s
Diagram 1
gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 19 22