One of the most famous and largest tyre manufacturers in the world experienced bearing failure on rubber cutting machinery. Conventional ball bearing units had many failures (due to harsh conditions – water splash), resulting in premature maintenance at least twice a year plus two unexpected failures per year. NSK performed on Application Review in order to understand operating conditions. The use of Stainless Steel bearing units with Molded-Oil lubricated inserts was proposed to solve the problem caused by corrosion. This solution resulted in 4 times longer bearing life, reduced maintenance, no unexpected bearing failure and no unplanned downtime.
|Before||Cost p.a.||NSK Solution||Cost p.a.|
|Bearings replacement & grease costs||€ 1.068||Bearing costs, no extra lubricant necessary||€ 2.506|
|Bearing mean life: 3 months. 30.000 € for each hour of downtime x hours for bearing replacement x replacements per year
||€ 120.000||Bearings are still running. No downtime caused by bearing failure||€ 0|
|Replacements per year x hours per replacement x 20€ per hour||€ 80||No maintenance costs caused by bearing failure||€ 0|
|Total Costs||€ 121 148||€ 2 506|