Industrial shaft seals

gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21,
Industrial
факс
shaft seals
(495) 22
Mounting, small diameter seals
General
If radial shaft seals are to perform well in
service they must be properly installed. This
calls for experience, suitable tools and also
cleanliness. The shaft counter surface and
housing bore should meet the demands
specified under “Shaft requirements” and
“Housing bore requirements” and they should
be clean.
To ease the installation of the seal in the
housing bore and to guarantee initial
lubrication it is recommended that the seal be
immersed in a suitable lubricant, which is
generally that which is to be retained by the
seal. If this is not the case then the sealing lip
and outside diameter of the seal should be
lightly greased.
Seals which have a secondary lip should also
be filled with grease between the primary and
secondary lips. Silicone rubber seals and seals
with hydrodynamic aids should not be treated
in this way.
Generally, a mechanical or hydraulic press
should be used with suitable tools to install the
seal in its housing bore. It should be remembered
that the pressure should be applied as
close as possible to the outside diameter of the
seal.
When pressing seals up against a shoulder
or retaining ring it is advisable to use tools of
the type shown in fig 50 and 51. The
necessary ring dimensions will be supplied on
request.
When the seal is to be flush with the wall of
the housing bore, this must be at right angels
to the housing bore axis and the outside diameter
of the tool should be larger than the
housing bore diameter (fig 52).
d 3
d 7
d = d _ 7 3 0,5 (mm)
d 2
d 7
d i
d = d _ 0,5 (mm)
7 2
Fig 50
Fig 51
d 2
d d _ 6 (mm)
i ~ 2
gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс (495) 85 22
Fig 52