Page 44 - SKF-bearing-housings

SKF bearing housings – overview, selection and application recommendations

Design considerations Fig. 12

SKF housings are typically designed for self-
aligning ball bearings, spherical roller bearings
and CARB toroidal roller bearings. These s
bearings are chosen because they are insensi-
tive to initial misalignment, which normally
occurs when the housings are spaced far apart.
Two-bearing housings have inherently
aligned bearing seats and therefore can ac-
commodate rigid bearings such as deep
groove ball bearings, angular contact ball
bearings and cylindrical roller bearings.

Bearing arrangements
Wide bearing seat for the non-locating bearing position
Locating/non-locating bearing
arrangements Fig. 13
Conventional locating/non-locating bearing
arrangements († fig. 15) are designed to
accommodate thermal elongation of the shaft.
In these systems, the non-locating bearing
must be able to move axially on its seat in the
housing.
SKF housings can accommodate bearings in
both the locating and non-locating positions.
Most standard housings have a bearing seat
that is sufficiently wide to enable axial displace-
ment of the non-locating bearing († fig. 12,
“s”). When these housings are used in the
locating position, locating (stabilizing) ring(s)
should be used to secure the bearing axially in
the housing († fig. 13). Locating bearing held axially by locating rings
Some SKF housing series are available with
a wide bearing seat for axial displacement,
designation suffix L, and a bearing seat that Fig. 14
matches the width of the bearing to locate it
axially, designation suffix F († fig. 14).

Locating bearing held axially by a matched bearing seat

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