Industrial shaft seals

gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21,
Industrial
факс
shaft seals
(495) 22
Design of sealing arrangement
V-ring seals are suitable for both grease and
oil-lubricated applications. For sealing greaselubricated
bearing arrangements against dust
or water spray, the V-ring should be arranged
outside the housing cover or housing wall.
Dust, water spray and other impurities can be
excluded in this position (fig 88a). The V-ring
will also act as a grease valve (fig 88b) Used
grease or excess new grease can escape
between the counterface and the sealing lip.
The use of two opposing V-rings (fig 89) is
recommended where lubricant retention and
contaminant exclusion are of equal
importance.
If V-rings are to be used to retain oil, they
should always be axially located on the shaft
on the lubricant side (fig 90). If the direction
of shaft rotation is constant, a spiral groove in
the counterface causes oil to leave the sealing
position and thus improves sealing efficiency.
a
b
Fig 88
Fig 89
Fig 90
gab.ru Берг АБ bergab@ya.ru Тел. (495)-228-06-21, факс 325 (495) 22