NSK has revealed how spherical roller bearings manufactured from its Super TF steel are saving a cold rolling mill operator approximately EUR 16,300 by preventing reoccurring bearing failures that were causing shutdowns and production losses.
The mill operator had to replace the bearings four times a year as they were adversely affected by ingress from dirt, debris and liquids.
Following analysis, NSK engineers recommended Super TF steel bearings as they are suitable for use in environments where contamination from debris is possible.
Key benefits of product application:
Super TF steel provides up to 10 times longer service life in conditions of contaminated lubricant compared with bearings made of ordinary carburized steel; where the problem is related to insufficient lubrication, Super TF steel bearings have a service life of around 5.5 times longer
The Super TF steel bearings offer increased resistance to wear and seizure
After four months in operation, the bearings were disassembled and sent back to the factory tests showed that minimum residual life was between 29 and 50 months, compared with less than four months with the previous bearings
To date, the customer has replaced the Super TF steel bearings once as part of a planned annual shutdown for maintenance
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