White Etch Crack Bearing Failures (Download)


An article by Bob Errichello, Rob Budny, and Rainer Eckert on White Etch Crack bearing failures seen in a wind turbine application.



A relatively new bearing failure mode known as White Etch Cracking has become a leading cause of wind turbine gearbox failures. This article describes the failure history of gearbox and main shaft bearings in a wind turbine application, and suggests some ways that such failures can be avoided.