Quote Originally Posted by Jonathan View Post
Jazz did you hear anything from Chai?
With 6 plastic inserts they must have 6 rows of balls, as each insert is a ball return tube. Additionally they're not going to use 3, or any odd number, rows of balls as that would result in uneven wear and all sorts due to having more balls running in one track...
I wonder if they're preloaded. A twin start screw with offset tracks in the nut is one way to apply preload - that would make them worthwhile.
No not heard anything yet but I only sent email late last night so don't expect too.

It's a flop over type nut so Yes it's 6 rows but 2 x 3 circuits per start. Like this http://motionsystemdesign.com/images...-ballscrew.jpg

Well thats how believe they are setup but I'm not striping it down to findout.:lol:

Yes by the feel of it I do feel that it's slightly preloaded as well.??