A paving producer in Poland was experiencing frequent breakdowns due to bearing failures in a vibrating thickener machine. The bearings were mounted in an electric motor which supported unbalanced weights providing the vibration. In a period of 4 months the customer experienced 10 failures and each time it took 2 hours to replace the bearings. The bearings were experiencing grease loss due to high operating temperatures in excess of 110°C 230°F. NSK engineers performed an application review and recommended that the existing shielded bearings be replaced with NSK fluoride rubber contact seals.
Before | Cost p.a. | NSK Solution | Cost p.a. | |
---|---|---|---|---|
Bearing failure - 20 in 8 months | $213 | No bearing failures during 4 months of testing | $107 | |
Maintenance: 20 electric motor $107 each | $2,100 | No maintenance required in 4 months | $0 | |
Lost annual production: 40 hours at $799/hr | $31,960 | No downtim in 4 months | $0 | |
Total Costs | $34,273 | $107 |
Reference:SS-E-5002