<p>I've recently designed a non-self-aligning caged deep-groove ball bearing. Now I'd love to get one 3D printed.</p>

<p>However, assembling those can be tricky and I highly doubt it's even plausible to print them. All the components themselves can be printed without a problem, but I'm not sure whether I'll be able to put them all together in the end.</p>

<p>What are my options?</p>

<p>FDM printers are probably out, although it would be great if I can find a way to use those. Would an SLA or perhaps an SLS printer be able to pull it off?</p>

<p>Of course the thing still has to work (move) in the end.</p>

<p><a href="https://i.stack.imgur.com/OuWFEm.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OuWFEm.jpg" alt="Caged deep-grooved ball bearing - MatVis"></a></p>

No, that's not (entirely) true. There might be some loss of quality if you print multiple objects at once, because when the printhead "hops" from one object to another it might leave a mark or ooze out some material. Also, a large number of retractions in a short period of time might lead to inconsistent extrusion.
However, none of this is particular to "filling out the board" as it happens even if you print only two objects at a time (or even when you're printing only one object with multiple islands).
It all depends on your printer (and in particular how well it handles retractions). If you're willing to do a small amount of cleanup afterwards (to remove the strings and blobs) then printing multiple objects at a time is completely viable.