Case study · Sugar cogeneration · Early warning
A slow vibration climb gave early warning on a turbine gearbox.
Evidence: Measured trend · early warning, no saving claimed
- Industry
- Sugar cogeneration
- System
- Turbine gearbox
- Data used
- Bearing vibration trend from the plant’s DCS, checked against the ISO 10816/20816 alert band
| Bearing | March 2025 | December 2025 |
|---|---|---|
| Pinion-front | 0.584 mm/s | 0.618 mm/s |
| Wheel-front | 0.748 mm/s | 0.795 mm/s |
What was found
Two turbine-gearbox bearings climbed slowly through 2025. Both stayed inside the ISO good band, but the trend was steadily the wrong way.
What was done, and what is next
Every bearing is now trended month on month, so the degradation is visible ahead of any alarm threshold, about two years before the ISO alert band. The recommended next step is a planned gearbox inspection.
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