Hot Strip Mill
A large manufacturer of rolled steel in Russia wanted to extend the bearing replacement intervals on the finishing section of its hot strip mill. Due to severe operating conditions, the standard 4-row tapered roller bearings were only lasting 1,400 hours, with replacements and maintenance costing 442,000€ per annum.
Why are bearing replacement and maintenance costs so high?
The company wanted to improve its competitive performance by extending service intervals and reducing costs – all without compromising reliability.
NSK inspected the machine and operating conditions.
Comprehensive analysis revealed that the existing bearing solution was inadequate for the application. NSK set about devising a way to extend bearing replacement intervals safely.
More cost-effective bearing replacement and maintenance
NSK recommended replacing the previous bearings with new 4-row Tapered Roller Bearings featuring a modified internal design, contact angle and steel composition. Bearing lifetime was duly increased, safely, to 2,200 hours, leading to a saving of 154,000€.
4-row Tapered Roller Bearings
- Up to three time longer life
- Special NSK heat treatment technology
- Optimised steel composition to resist cracking
Cost Savings – Bearing replacement and maintenance costs
Before
€ 442,000
NSK Solution
€ 288,000
Contact Search
Please select your options to view your contact.
