A major steel manufacturer was using open roll work bearings for their plate rolling mill. The maintenance team was investigating alternatives to the grease being used in this application. NSK was asked to provide a potential alternative for the bearing application with associated cost savings. By using an NSK Sealed Clean 4 row tapered roller bearing assembly the customer’s need for daily re-greasing was removed. This had the added benefits of reduced grease disposal costs, continuous operation and protected the bearing from external contamination.
|Cost of greasing current open bearings: 1.2 times per day bearings greased × 4kg of grease × €4/kg cost of grease × No. of bearings × 350 days a year
|Cost of NSK Sealed Clean design: bearings × 6kg of grease during re-grease × €13,36 cost of grease recommended by NSK
|Cost of used grease disposal (per mill staff)
|Cost of grease disposal (per re-grease)
|€ 47 612