Originally Posted by
underthetire
No way the tool changer has been changed, probably just bad description. Ball screws may be a little sloppy, but not very common to need to replace those. Thrust bearings on the screws will fail first. Mori has a very specific way to change these bearings and screws, it could be done by a non service guy, but would take a while. If the screws are bad, figure 3,500 to 5K per screw. Bearing sets are about 1k per axis. (sv's use 5 bearings per screw). Noise is always a givaway to thrust bearings. Even backlash tests won't tell you the story unless you know Fanuc well enough to set the comps to 0, people will put huge comp numbers in to fool buyers. Like I said, pay a MORI service guy to go with you, if even for an hour, if you need screws and a spindle your up to 20K+ to fix it.