Hi,
I'm converting my Optimum BF20L mill to CNC. In the Z axis I'm using 2005 ball screw and I have a Taiwanese 4 rows ball nut and a Chinese double ball nut.
While the double ball nut is installed but the pieces are separate from each other they play a lot. Say a play like a 0.5mm. Very slacky. But when I join the pieces together they work fine. No play at all.
Is this the way how a double ball nut is?
On the other hand the Taiwanese 4 rows ball nut alone works fine.
I can't decide whether I should use the Taiwanese 4 rows or the Chinese double ball nut.
Suggestions are welcome.
Thanks