ballbearing support for XYZ

this part will replace any ball bearing from xyz AIO and XYZ 1.0 printers.

few days ago i started to see poor quality in my prints ... i tried to find any posts on internet but i didn't find anything to address my problem. i had an issue with all my prints but was very obvious on any round part. the objects were having an issue on the y axis...
after inspecting the printer i noticed that the small belt coming from the y motor was not tensioned.. the tension pulley was not applying any t