Quote Originally Posted by longy View Post
Vagelis, look at your video No 4 see how much wobble there is on the of the drill. That will only make the screw vibrate the ball nut, even holding it in your hand it will still act like a vibration unit. Once it's bolted securely to the frame 99.99% of the vibration will go. Like Dean says the chances are it will be ok.
Longy the wobble that you mention isn’t on the drill. That dancing movement of the drill is cause of the ballscrew bending. I can say that because the same drill turn the other 3 ballscrews and the wobble wasn’t so much.. In video #4 is the 500mm 1605 ballscrew that I think that is bended at the edge ( where the drill attach the screw.) and not at the middle.