Success Story
Industry: Food & Beverage
Application: Bleed Shackle Roller
Cost Savings: € 27 263
Introduction
An animal slaughter production line was experiencing regular failures of deep groove ball bearings used in a bleed shackle roller application which is used to transport animals along the production line. The initial bearings were replaced regularly resulting in high costs.
NSK engineers checked the application, analysed several failed bearing sets and found the cause of failure to be brinelling damage during operation.* NSK advised a different bearing type and assembly that could accommodate the impact loads seen during operation. The bearing change resulted in a significantly longer bearing operational lifetime.
* Please find information on bearing diagnostics in the NSK catalogue "New Bearing Doctor"
- Bleed Shackle Roller
- Cylindrical Roller Bearings - EW series
Key Facts
- Bleed Shackle Roller
- 4 Deep Groove Ball Bearings used per roller
- Failures occured between 1 day and 14 days
- Brinelling damage was root cause of failure
- NSK Solution: Cylindrical Roller Bearings, two different types
- Application lifetime significantly increased, over 6 months
Value Proposals
- NSK engineers performed an Application Review together with a Failed Bearing Analysis
- As a result, it was recommended to replace the deep groove ball bearings in use with cylindrical roller bearings which are more accommodating impact loading
- A trial of NSK Cylindrical Roller Bearings in the application showed over 6 months lifetime
- Significant reduction of replacement costs and downtimes
- Cost savings realised
Product Features
- High strength & wear resistant pressed steel cage
- Cage pocket design gives superior roller guidance
- Cage strength increased 1.5 – 2 times
- Cage symmetry reduces noise
- Controlled contour rollers
- Up to 30% increase in load Rating
- Longer operating life – up to twice the bearing life
- 10 - 25% higher limiting speed than conventional series
- 30 - 40% noise reduction (3 - 7dB quieter) & vibration reduction
Cost Saving Breakdown
| Before | Cost p.a. | NSK Solution | Cost p.a. | |
|---|---|---|---|---|
| Bearing Costs: Bearing replacement costs | € 26.699 | Bearing Costs: Bearing replacement costs | € 4.015 | |
| Costs of lost production: Downtime costs | € 4.602 | Costs of lost production: Downtime costs | € 1.198 | |
| Engineering Costs: 10 new shackles | € 1.175 | Engineering Costs: No costs for new shackles | € 0 | |
| Total Costs | € 32 476 | € 5 213 | ||
Reference:SS-E-2071
Share