Ball screws fail in machine tools due to one or more of these conditions:

1. normal wear
2. poor maintenance (lack or excess of lubrication)
3. accidents resulting from electronic malfunctions
4. poor design-under capacity
5. too high preload
6. bent leadscrew
7. misalignment (improper installation)
8. environmental
9. operator error

Ball and leadscrews are machined from top quality material, hardened and ground to super-precision tolerances. They usually do not need replacing when worn. As a result, it is economically feasible to service all types of ball screws by regrinding the screw and installing new nuts, balls and seals. See Photo Gallery for after pictures.