A major steel producer wasn't satisfied with the performance of their four-row tapered roller bearings installed in the cold rolling mill. Steel shavings from the production process were entering the bearings resulting in a detrimental effect on bearing reliability. NSK performed a detailed analysis of the bearings on site together with a failed bearing and lubrication review. After analysis,recommendation was made to use NSK’s Tough technology steels which has an excellent resistance to damage caused by entrance of cantamination.
|Before||Cost p.a.||NSK Solution||Cost p.a.|
|Bearing Life of the previous bearings: 4 months
Lost production costs: $1,071/h downtime × number of replacements × 4 unexpected downtimes per year
|$47,147||Bearing Life of the new bearings: 12 months
Lost production costs: $1,071/h downtime × number of replacements × 1 unexpected downtime per year