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Home » Investigations of Bearing Failures Associated with White Etching Areas (WEAs) in Wind Turbine Gearboxes

Investigations of Bearing Failures Associated with White Etching Areas (WEAs) in Wind Turbine Gearboxes

March 1, 2014
A critical problem for wind turbine gearboxes is failure of rolling element bearings where axial cracks form on the inner rings. This article presents field experience from operating wind turbines that compares the performance of through-hardened and carburized materials. It reveals that through-hardened bearings develop WEA/WECs and fail with axial cracks, whereas carburized bearings do not. The field experience further shows that a carburized bearing with a core having low carbon content, high nickel content, greater compressive residual stresses, and a higher amount of retained austenite provides higher fracture resistance and makes carburized bearings more durable than through-hardened bearings in the wind turbine environment.
Design Applications Components Industry Bearing Failure Failure Power Wind Wind Turbines Bearings Gearboxes Motors Turbines Wind Turbine Gearboxes Technical Articles Trade Shows IANA
KEYWORDS bearing failure white etching areas wind turbine gearboxes wind turbines
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