Success Story

Industry: Steel & Metals

Application: Cold Rolling Mill

Cost Savings: € 160 896

Introduction

At a large German steelworks, the back-up rolls in a cold rolling mill continually failed after a short time. The purchasing department requested the use of competitor bearings for cost reasons. NSK checked the application and found out that the competitor bearings were running uneven after only a short period of use. NSK recommended to use back-up rollers, which can be reground several times. It is common that within this application bearings are turned and reground. The NSK bearings are now running for up to 1.5 years without any unplanned failures. Unplanned stoppages and maintenance cost have been reduced.

Double-Row Cylinder Roller Bearing with optimised innerring sidebar

Cold Rolling Mill

Back-up rolls - cylindrical roller bearing

Key Facts

In a cold rolling mill of a German steelworks competitor bearings failed after a very short time of runing
The purchasing department requested the use of these bearings for cost reasons
NSK reviewed the application recommended to use NSK back-up rollers which can be reground several times
Within this application it is common to turn the bearings after 4-6 weeks and re-grind them up to 10 times
The NSK bearings were running for around 1.5 years without any failures

Value Proposals

In a cold rolling mill of a German steelworks competitor bearings failed after a very short time of runing
The purchasing department requested the use of these bearings for cost reasons
NSK reviewed the application recommended to use NSK back-up rollers which can be reground several times
Within this application it is common to turn the bearings after 4-6 weeks and re-grind them up to 10 times
The NSK bearings were running for around 1.5 years without any failures

Product Features

In a cold rolling mill of a German steelworks competitor bearings failed after a very short time of runing
The purchasing department requested the use of these bearings for cost reasons
NSK reviewed the application recommended to use NSK back-up rollers which can be reground several times
Within this application it is common to turn the bearings after 4-6 weeks and re-grind them up to 10 times
The NSK bearings were running for around 1.5 years without any failures

Product Sheet >>

Cost Saving Breakdown

Before		Cost p.a.	NSK Solution	Cost p.a.
	Bearing Costs	€ 244 592	Bearing Costs	€ 134 296
	Engineering Costs	€ 7 200	Engineering Costs	€ 600
	Costs of lost production	€ 48 000	Costs of lost production	€ 4 000
Total Costs		€ 299 792		€ 138 896

Reference:SS-E-1-1001

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