November 2022 - A major paper mill was experiencing problems with its calender rolls, where multiple cracks were developing on the inner rings of the roll bearings. Frustrated by experiencing up to 10 failures annually, which led to excessive downtime and maintenance, the mill invited NSK's team of experts to investigate and resolve the issue.
As part of NSK's Added Value Program AIP, a comprehensive application review revealed that a competitor's standard spherical roller bearings being used in the calender roll did not feature carburized inner rings, leaving them vulnerable to the high heat and thermal stress in the application.
NSK’s TL series spherical roller bearings are ideally designed for paper machine dryer roll applications — and wherever elevated temperatures prevail — optimizing machine uptime and efficiency with superior resistance to inner ring fracture and exceptional dimensional stability at high temperatures.
Download NSK's case study (two-page, PDF).
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