A large steel manufacturer wanted to increase replacement intervals of a 4-row Tapered Roller Bearings used in the hot strip mill. Due to severe operation conditions, standard bearings provided only 1,400 hours of operation. The key target was to decrease spend on bearing replacement and maintenance.
NSK inspected the bearing units along with the operating conditions. As a result new 4-row bearings with modified internal design and contact angle were delivered for testing. New bearing lifetime was increased up to 2,200 hours.
|Before||Cost p.a.||NSK Solution||Cost p.a.|
|Bearing replacement costs||$463,105||Bearing replacement costs||$308,737|
|Additional maintenance costs compared to NSK solution||$10,720||Reduced maintenance time and no additional costs||$0|