A quarrying company was experiencing bearing failures due to contamination on each side of the conveyor head pulley. This caused increased maintenance cost, reduced lifetime of the bearing and a downtime in production every 18 months. NSK analysed the bearing and recommended to use bearings in High Tough steel (HTF). After the bearings were put into service they lasted 6 years.
|Before||Cost p.a.||NSK Solution||Cost p.a.|
|6 People, working 12 hours @ 32 € per hour||€ 2.304||No mentainance necessary||€ 0|
|7,000 tons per hour x 12 hour stoppage x 4 times x 13.5 € per ton||€ 4.536.000||No lost production stoppages||€ 0|
|Total Costs||€ 4.538.304||€ 0|