[shujaa]

After some usage now a problem as follows has appeared.



I want to understand something about ball nuts.
there are 2 plastic rings on both sides of the ball nut. these rings are held by 2 very small screws. if i loose them and turn out the rings slightly the ball nut starts to wobble and also move along the axis on the screws by a small amount. If i turn the rings in and lock them with the screws the wobble or play is finished. I thought these were just wiper seals but it appears they have grooves matching threads and behave like a nut when rotated.



Is this normal?
Do i have now to replace the screw.
Or do i need to replace the ball nut ?
Or do I need to put in balls of a slightly larger size?
What will be the next size of balls if needed?

Best regards.

[Jim Dawson]

Sounds like the seals were doing the job the balls should be doing. I think larger balls are the answer. You have to figure out the needed ball size.