A major steel manufacturer was using open roll work bearings in their plate rolling mill. The maintenance team was investigating grease alternatives. 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 daily re-greasing rewuirement was removed. Additionally, this had the benefits of reduced grease disposal costs, continuous operation and bearing protection from external contamination.
|Before||Cost p.a.||NSK Solution||Cost p.a.|
|Cost of greasing current open bearings: 1.2 times per day × 4kg of grease × $4.30/kg cost of grease × No. of bearings × 350 days a year||$28,929||Cost of NSK Sealed Clean design: bearings × 6kg of grease during re-grease × $13.94 cost of grease recommended by NSK||$688|
|Cost of used grease disposal (per mill staff)||$22,109||Cost of grease disposal (per re-grease)||$71|