Bearings for the Steel Industry - NSK Europe - #29

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Steel Industry 29 Identification of failure User Benefit Material measures Design measures User Benefit Estimated effect of maintenance cost reduction Overall cost benefit in a five-stand cold rolling mill (four-high rolling) using Water-TF Bearings is roughly 30% to 35% compared to open-type bearings and maintenance cost benefit is roughly 25% to 30% if compared to conventional sealed bearings. Cost benefit is the sum of costs related to grease, bearing usage, seal repair, and maintenance costs ((1) + (2) + (3)). Bearing specifications Grease Bearing usage cost and seal repair cost Maintenance work cost for bearings Open type bearings (without seal) Maintenance cycle: 3 months Water-TFTM Bearings Maintenance cycle: 6 months 90% reduction 50% reduction 50% reduction Conventional sealed bearings Maintenance cycle: 6 months 50% reduction 90% reduction