Page 68 - SKF-bearing-housings

Split plummer block housings SNL 2, 3, 5 and 6 series

Bearing seat tolerance Fig. 8
SNL h o u s i n g s c a n b e s u p p l i e d w i t h d i f f e r e n t Standard sealing solutions for SNL plummer block
b e a r i n g s e a t t o l e r a n c e c l a s s e s , e . g . f o r a p p l i - housings in the 2, 3, 5 and 6 series
c a t i o n s p r o n e t o v i b r a t i o n , w i t h r o t a t i n g o u t e r
r i n g l o a d , o r f o r a p p l i c a t i o n s o p e r a t i n g a t h i g h
t e m p e r a t u r e s .
F o r a d d i t i o n a l i n f o r m a t i o n , c o n t a c t t h e S K F
a p p l i c a t i o n e n g i n e e r i n g s e r v i c e .

Housings for oil lubrication
F o r o i l l u b r i c a t i o n , s p e c i a l s e a l s a r e r e q u i r e d t o
p r e v e n t o i l l e a k a g e . O i l s e a l s r e q u i r e a m o d i -
f i e d h o u s i n g a n d t h e r e f o r e t h e s e h o u s i n g s a r e
s u p p l i e d t o g e t h e r w i t h t h e s e a l s a s a u n i t . S NL
h o u s i n g s a r e a v a i l a b l e f o r o i l l u b r i c a t i o n f r o m
s i z e 5 16-613. The housing with oil seals is Four-lip seal V-ring seal Felt seal
TSN .. C
TSN .. A
TSN .. L
identified by the suffix TU R U , e.g.
SNL 524 T U R U .
SNL plummer block housings have a small
oil sump. Be careful not to overfill the sump, or
leaks can result. SONL plummer block hous-
ings are specially designed for oil lubrication
and may be more advantageous. For detailed
information refer to Split plummer block hous-
ings SONL series († page 349).
Sealing solutions

SNL plummer (pillow) block housings are
available with different standard sealing solu- Felt strip Labyrinth ring
tions († fig. 8): FS 170 TSN .. S

• four-lip seals (TSN .. L)
• V-ring seals (TSN .. A)
• felt seals (TSN .. C) or felt strips (FS 170)
• labyrinth seals (TSN .. S)
• taconite heavy-duty seals (TSN .. ND)
• end covers (ASNH ..)
Table 3 provides an overview of the charac-
teristics and suitability of each sealing solu-
tion. Details are provided in the following text.
This information should be used as a guideline,
and does not substitute for testing a seal in its
application.

Taconite heavy-duty seal End cover
TSN .. ND ASNH ...

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