A major steel producer was not satisfied with the performance of the four-row tapered roller bearings that were installed in its cold rolling mill: steel shavings from the production process were getting into the bearings and having a detrimental effect on reliability. NSK performed a detailed analysis of the bearings on site together with a failed bearing and lubrication review. This prompted a recommendation to utilise NSK’s Tough technology steels which have a far better resistance to damage caused by debris ingress.
Before | Cost p.a. | NSK Solution | Cost p.a. | |
---|---|---|---|---|
Bearing Life of the previous bearings: 4 months Lost production costs: € 1.000/h downtime × number of replacements × 4 unexpected downtimes per year |
€ 44.000 | Bearing Life of the new bearings: 12 months Lost production costs: € 1.000/h downtime × number of replacements × 1 unexpected downtime per year |
€ 17.600 | |
Total Costs | € 44 000 | € 17 600 |
Reference:SS-E-7003