Page 204 - SKF-bearing-housings

Split plummer block housings SNL 30, 31 and 32 series

Using sealed bearings and are always s upplied together with the
housing.
Using sealed bearings in housings with stand- SNL … TURP housings are suitable for
ard seals is a good solution for highly contam- spherical roller and CARB toroidal roller bear-
inated environments. The sealed bearing ings in the 30 and 31 dimension series from
together with the housing seal and grease size 3036 to 30/530 and 3134 to 3196.
provide three layers of protection († SKF
three-barrier solution, page 39).
SNL housing seals in the 30, 31 and 32 Custom seals
series can be used together with sealed, self- SNL housings in the 30, 31 and 32 series can
aligning SKF bearings. When using taconite be equipped with any type of seal that fits the
heavy-duty seals, a sealed bearing does not seal groove dimensions in the housing. The
enhance the sealing effect during operation, relevant dimensions are provided in tables 3
but still protects the bearing against contam- and 4 on pages 201 and 202.
inants during mounting. If custom seals are to be used, SKF recom-
mends ordering housings in the SNL .. G
series. Housings in the SNL .. G series have
Special seals larger bores at the front and back of the hous-
ing and can accommodate a wider choice of
In addition to the standard seal assortment, seal designs.
SNL housings in the 30, 31 and 32 series are
also available with seals for large axial move-
ments. Custom seals for special applications
are also available on request.

Seals for large axial movements
Large SNL housings are available with seals
that can accommodate large axial movements,
a typical requirement of drying cylinders and
felt rolls in paper machines. The double laby-
rinth seals are designed for circulating oil
lubrication systems. The seals are fitted in a
modified housing, designation suffix TURP,

Fig. 9
Seal for large axial movements

200