Hello!

I´m planning on converting my z-axis to linear rails due to my Z-axis are sloppy/big friction and i think it´s main stopper for better surface finish.
Have planned to use Hiwin linear rails (25mm) with carriages HGH25CA type.
My question is what do you think about preload for this carriages? I´m using servo 850oz/inc.
There is 3-levels of preload Z0, ZA and ZB. ZB are only recommended for 20mm>rails.
What is the general opinion on converting the Z-slide to linear rail, can i expect better/stiffer system?

BR/Andreas