Question about angular contact bearing mounting

[Andrea Vironda]

Hi,
In my memories there's the information that in a O shaped mounting, the bearings will work in diagonal (the forces will be transmitted following that path).
But in many drawings I can see the presence of a spacer between internal rings. Is it necessary since no force should be transmitted to it?

 

[Lnewqban]

What do you call a spacer in this specific case?
This is an almost purely axial ball bearing.

 

[Andrea Vironda]

There are 2 spacers: one between the 2 yellow marks (rotating) and the other just above, fixed.
I think the internal is useless since forces are exchanged in other points.

 

[Baluncore]

I think the internal is useless since forces are exchanged in other points.

Are the spacers actually seals, to protect, and keep dirt out of the bearings?
What keeps the bearings concentric if there is an external side force?

 

[jrmichler]

This is an angular contact ball bearing designed for primarily thrust loads. In order for us to understand your question, we need to see more details of the mounting.

 

[Andrea Vironda]

This is an angular contact ball bearing.
In the internal side there's a spring pushing to the left, and oil pressure pushing to the right. But the bearings to not bear load, in this case I don't know why they are angular and not straight. Maybe because the passage of the load is not smooth and there are some backlash.

My question was in general.
In any case the inner spacer is not providing any spacing to the bearings, since they are acting on the other diagonals