sideways vs parallel
It describes the plane of the bearing face. The face is the side where can see the bore hole. So, a bearing that is parallel to the blade's plane is shown in the photos. A bearing that is "sideways" or perpendicular to the blade's plane is the "WHY" part of the OP's question.
The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
Last edited by woodnthings; 12-16-2016 at 08:21 PM.