Pully Center for Y-Axis Belt Guide

I was wondering if the belt on the Y-Axis on my orca would stay on its bearing as there is no guide...

It should work as other useres indicate, and i myself have been running it for quite a while.
As long as everything is perfectly aligned it will work.

But, as the devil never sleeps and as i had one incident where it fell of i decided to make a snap on guide.