Senvion, one of the world’s largest manufacturers of wind turbines, has detected anomalies in the rotor bearings of their offshore turbines in 5M and 6XM series.
Unusual rise in temperature in the bearings was a result of inadequate lubrication, which also caused wear, said Verena Puth, Senvion spokeswoman, in an email statement.
Puth added: “Remedial action can be taken by directly injecting additional lubricant.“
The company is conducting further examinations in conjunction with the supplier and external specialists to validate the cause and verify the solution.
“We have a state-of-the-art product in a technological area that is still young. It is entirely normal for this technology to be subject to adjustment,” Puth concluded.