Field case · Condition monitoring
Paper machine press roll: a weak outer-race signal at 130 rpm doubled in eight days and was confirmed at teardown
A 55-tonne press roll on a 241/710 spherical roller bearing. A fault line at only 0.98 mm/s was acted on, doubled within eight days, and the bearing showed severe outer-race spalling in the loaded zone.
What the case covers
- The application
- The timeline
- Why a level of 0.98 mm/s was enough
- The evidence chain
- Reading the numbers carefully
- What to apply
- The result
Takeaway. Low speed does not mean low risk. A clean fault pattern that doubles in days on a heavy roll is enough to plan the change, even when the level is low.
Read the full case, with the data and the numbers