Pulp & Paper industry: Bearing defect on 2nd Press CC Roll This case is presenting a defect of a Triple Ring Bearing at the 2nd Press CC Roll. CC refers to “Controlled Crown” . This has the ability to crown or bend the roll slightly to conform to the nip that is pressing against the other roll. This bearing is very expensive around 50K USD and is very large. It is called a triple ring bearing as it has two sets of rollers so there is an “outer race of the outer bearing” and there is an “inner race of the outer bearing” then there is an “outer race of the inner bearing” and then ?nally there is an “inner race of the inner bearing” . In the trend view you can see that con?dence was very low at about 20% and showing just a few harmonics of outer race defect. As the defect got worse thecon?den

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