lubricate ball screws

[erkiwi]

What oil or grease should I use to lubricate ball screws (lead screws) on my cnc machine,or should I just run them dry.

[underthetire]

Well, are they ball screws or lead screws? Makes a difference.

[erkiwi]

They are all ball screws one is rolled the other machined and polished

[grego85]

You can use a lithium based greased with a viscosity of 30 to 140cSt.

Shell Alvania S2 comes to mind for general applications.