Field case · Condition monitoring
Cement mill gearbox: gear wear found five months before the teardown
Cement dust in the oil damaged the bearings, then the gears. The spectra showed it months before the gearbox came out.
What the case covers
- The situation
- What the measurements showed
- What the teardown found
- Root cause
- Why it matters
- How to apply it
Takeaway. Gear wear and bearing noise can look alike. Matching sideband spacing to known shaft speeds tells them apart, and the oil often tells you why.
Read the full case, with the data and the numbers