Page 407 - SKF-bearing-housings

Design considerations

Locating and non-locating bearing
positions
SAF and SAW housings can be used for both
the locating and non-locating bearing position.
The housings are machined standard for
bearings in the non-locating position. Bear-
ings in the locating position as well as CARB
toroidal roller bearings must be secured in the
housing with one or two stabilizing (locating)
rings. Appropriate stabilizing rings are listed in
the product tables.

Load carrying capacity
SAF and SAW housings are intended for loads
acting perpendicularly toward the support
surface. If the housing is supported over its
entire base and the loads are purely perpen-
dicular, loads are limited only by the bearing.
If loads acting in other directions occur,
check that the magnitude of the load is per- 8
missible for the housing and the attachment
bolts. Guideline values for the safe loads of
the housings are provided in tables 3 to 5 on
pages 404 to 407. The safe loads have been
calculated using a safety factor of 5 against
fracture and a factor of 2 against cap bolt yield.
For housings made of spheroidal graphite cast
iron the values obtained from table 3 on page
404 should be multiplied by a factor of 1,8.
If the housing is not supported over its
entire base, the load carrying capacity for
vertical loads may be affected. For additional
information, contact the SKF application
engineering service.
For a purely axial force, static or dynamic, the
permissible load on the pillow block housing
should not exceed 65% of P 180° . If the incorp-
orated bearing is mounted on a sleeve, check
the permissible axial load for the sleeve.
When housings are subjected to cyclic loads
or dynamic imbalance, contact the SKF appli-
cation engineering service.

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