Success Story
Industry: Steel & Metals
Application: Rolling Mills
Cost Savings: € 69 803
Introduction
An Spanish Steel Mill Company was experiencing bearing life times much shorter than desired. The unexpected failure of the bearings caused production stoppages, causing lost time and money. NSK Technical Department together with the Steel Mill Technical Office analyzed the working conditions of the bearings as well as the lubrication regime. As a result of these analyses, several modifications were made such as review of the fitting, suitability of the lubricants as well as the use of HPS spherical roller bearings. With all the applied changes, the running life of the bearings was greatly extended.
- Hot Mill
- NSKHPS Spherical Roller Bearings
Key Facts
- Hot Mill Application suffering unexpected failures and high production costs.
- Technical Root Cause Failure Analysis completed to identify the causes of failure.
- Review of the fitting process and tolerances, supporting Maintenance Departments requests for the process improvement.
- Review of lubrication regime to optimise running conditions and prolong life.
- Assembly NSK HPS Spherical Roller Bearings with higher Radial Internal Clearance.
Value Proposals
- Hot Mill Application suffering unexpected failures and high production costs.
- Technical Root Cause Failure Analysis completed to identify the causes of failure.
- Review of the fitting process and tolerances, supporting Maintenance Departments requests for the process improvement.
- Review of lubrication regime to optimise running conditions and prolong life.
- Assembly NSK HPS Spherical Roller Bearings with higher Radial Internal Clearance.
Product Features
- Hot Mill Application suffering unexpected failures and high production costs.
- Technical Root Cause Failure Analysis completed to identify the causes of failure.
- Review of the fitting process and tolerances, supporting Maintenance Departments requests for the process improvement.
- Review of lubrication regime to optimise running conditions and prolong life.
- Assembly NSK HPS Spherical Roller Bearings with higher Radial Internal Clearance.
Cost Saving Breakdown
| Before | Cost p.a. | NSK Solution | Cost p.a. | |
|---|---|---|---|---|
| Bearing Costs | 25 400 € | Bearing Costs | 5 080 € | |
| Engineering Costs | 1 880 € | Engineering Costs | 376 € | |
| Costs of lost production | 60 000 € | Costs of lost production | 12 000 € | |
| Lubrication Costs | 60 € | Lubrication Costs | 81 € | |
| Total Costs | 87 340 € | 17 537 € | ||
Reference:SS-E-7-583
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