Field case · Condition monitoring
Rolling mill bevel gear: a broken tooth found in vibration data, and a plant that chose to run on
Quick answer
A fleet survey found a broken tooth on the first-stage bevel gear of a rolling mill stand, with three more gearboxes carrying the same fault. The plant had known for a year and saw no reason to repair while production ran. The case lists what a broken tooth does to the motor, the gearbox and the bearings.
What the case covers
- What the survey found
- The evidence
- The plant knew already
- The answer given
- What to take from it
Takeaway. A broken tooth does not fail alone. Put the knock-on cost for the motor, mesh and bearings in front of the decision maker.
Read the full case, with the data and the numbers