A customer was experiencing constant bearing failure within an Autoclave bogie wheel assembly utilizing Deep Groove Ball Bearings. The failures resulted in damage of surrounding hardware (housings and axles) creating high labor and replacement parts cost. NSK Engineers examined the application and determined that ingress of hard particulates and moisture, combined with excessive load was causing premature bearing failure. NSK recommended upgrading to NSKHPS Spherical Roller Bearings, which offered greater service life and reliability, as NSKHPS roller bearings carry greater loads and operate at higher temperatures. This solution resulted in eliminating continuous ongoing maintenance and substantially reduced colateral damage to surrounding components.
Before | Cost p.a. | NSK Solution | Cost p.a. | |
---|---|---|---|---|
Bearing Costs: Deep Groove Ball Bearings |
$16,226 | Bearing Costs: NSKHPS Spherical Roller Bearings |
$3,343 | |
Annual Maintenance Costs: 2040 hours @ $28/hour |
$56,840 | Annual Maintenance Costs: | $0 | |
Annual Hardware Costs: Replacement of damaged bearing housings and axles |
$82,753 | Annual Hardware Costs: Bearing housings and axles |
$4,179 | |
Total Costs | $155,819 | $7,522 |
Reference:SS-E-2036