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Axial location of bearings

An interference fit alone is inadequate for the axial location of a bearing ring. As a rule, therefore, some suitable means of axially securing the ring is needed.
Both rings of a locating bearing should be axially secured on both sides (fig 1).
For non-locating bearings that are of a non-separable design, the ring having the tighter fit - usually the inner ring - should be axially secured; the other ring must be free to move axially with respect to its seat (fig 2), except for CARB bearings where both the rings are axially secured (fig 3).
For non-locating bearings that are of a separable design, e.g. cylindrical roller bearings, both the rings are axially secured.
For "cross-located" bearing arrangements each bearing ring needs only be axially secured on one side (fig 4).
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