PLEASE. Wobble in Y axis

Hello! Bought an used CNC machine for a good price. Upon transportation the right Y axis ballscrew got an wobble and i dont know have to fix it.... The system is an rotating ballnut so the ballscrew is fixed and the end (I CANT TENSIONATE IT). The previous owner told me he hasnt had that problem and it might be out of square or something... I tried to lose the bolts and square it but no help.. Only the right axis has this problem How could i test for squareness or how to center it? Thx very much

https://youtube.com/shorts/JvQscDG1RLE
https://youtube.com/shorts/fhKug7bWz9s

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Originally Posted by Daniul

Hello! Bought an used CNC machine for a good price. Upon transportation the right Y axis ballscrew got an wobble and i dont know have to fix it.... The system is an rotating ballnut so the ballscrew is fixed and the end (I CANT TENSIONATE IT). The previous owner told me he hasnt had that problem and it might be out of square or something... I tried to lose the bolts and square it but no help.. Only the right axis has this problem How could i test for squareness or how to center it? Thx very much

https://youtube.com/shorts/JvQscDG1RLE
https://youtube.com/shorts/fhKug7bWz9s

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Do you mean the ball nut and the ball screw are not matched well, and the ball nut is wobbling.
If so might need to replace the whole ball screw and the nut, can not replace the nut only.