A vegetable preparation manufacturer in the UK was experiencing frequent breakdowns with their Biogas plant due to bearing failures within a rotary screen. Two Deep Groove Ball Bearings were mounted within each wheel, with two wheels per rotary screen.
On average the bearings failed every 6 weeks, taking 1 hour each time to replace and incurring a significant loss of production per day. The bearings were failing due to ingress of contamination behind the seals. NSK engineers performed an Application Review and recommended that the existing bearings be replaced with Stainless Steel Molded-Oil Deep Groove Ball Bearings with DDU seals.
Before | Cost p.a. | NSK Solution | Cost p.a. | |
---|---|---|---|---|
Bearing Cost: Total 32 replaced per year |
€ 134 | Bearing Cost: Total 12 replaced per year |
€ 992 | |
8 breakdowns per year 51€ maintenance costs per breakdown |
€ 408 | 3 breakdowns per year 51€ maintenance costs per breakdown |
€ 153 | |
1,5 hours lost production per breakdown 2.641 € costs per hour |
€ 31.692 | 1,5 hours per breakdown 2.641 € costs per hour |
€ 11.884 | |
Total Costs | € 32 234 | € 13 029 |
Reference:SS-E-2058