July 2021
Steel plant saves around €70,000 with spherical roller bearings from NSK
After problems with short bearing life a Spanish hot rolling mill plant worked with NSK to rectify problem. Benefits have been considerable
F
or the past four years a hot rolling mill at a steel plant in Spain had been experiencing unexpectedly short bearing life, leading to costly production stoppages. As a result, the plant worked closely with the Technical
Department at leading bearing specialist NSK to assess the application and propose and implement a solution based on high-performance spherical roller bearings. By adopting the recommendations set forward by NSK, the steel plant is now saving €69,803 per annum in reduced costs for downtime, maintenance, bearings and lubrication.
When performing a technical root cause failure analysis, NSK’s expert team closely analysed the working conditions, as well as the lubrication regime to optimise running conditions and prolong life. Furthermore, in
support of the maintenance department’s request for process improvement, NSK undertook a review of the bearing fitting process and tolerances.
Working in partnership with the steel plant, the information from the analyses and reviews indicated that the high running temperature of the bearing was emanating from a combination of incorrect fitting and lubrication failure due to higher productivity (running speed) at the plant.
Among the many recommendations was the implementation of NSKHPS (High Performance Standard) spherical roller bearings with higher radial internal clearance to better suit the application conditions. Spherical roller bearings from NSK can withstand arduous operating conditions. These bearings
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Following NSK’s recommendations, bearing consumption at a steel plant in Spain has reduced by 80%.
Photo: T photography/Shutterstock
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