Field case · Condition monitoring
Rotary calciner at 3.5 rpm: four years of online monitoring, every bearing defect caught
Support wheel bearings turning at 3.5 rpm, where ordinary vibration analysis struggles. Three defects found 9 to 10+ months early and confirmed at teardown.
What the case covers
- The application
- The problem
- What was installed
- Case 1: outer race, bearing 3B
- Case 2: outer race, bearing 1B
- Case 3: outer and inner race, bearing 3B
- How to read the charts
- What the teardown showed
- The result
- How to apply it
Takeaway. At 3.5 rpm the data still shows the damage months ahead. Match the monitoring method to the speed, and plan the stop instead of reacting to the failure.
Read the full case, with the data and the numbers