what are the besy way to model a bearing in solidedge for sump pump
The right answer actually depends on what the model is needed for: to create an animation; to make a mechanical drawing; to make load analysis; etc.
Anyway, you can approach the modeling in three different way:
1) you do not model the bearing but you download it from a 3D web library, like http://b2b.partcommunity.com/community/.
2) you model the bearing as a unique part by taking advantage of the multi-body functionality of the part modeling environment. In this case, keep the rolling parts slightly smaller that the rolling guide.
3) model the bearing as an assembly by modeling each single component.