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 | ||
Reference:SS-E-4001
