All of the affected turbines contain gearboxes using an integrated bearings solution. The gearboxes were supplied to Vestas between June 2009 and September 2011 by Hansen Transmissions, now known as ZF “uåX˜äŠÊ˜·³Ç Antwerpen following Friedrichshafen in October 2011.
A Vestas spokesman said the company would look at seeking compensation from both ZF and Schaeffler, ZF's supplier of the bearings.
He said: "Vestas has allocated €40 million to cover the potential additional maintenance, repair or replacement costs of our customer's gearboxes.
"Vestas will pursue all relevant actions with regards to a potential compensation from ZF and the bearing manufacturer."
A ZF “uåX˜äŠÊ˜·³Ç spokesman said the firm was working with Vestas and Schaeffler to remedy this situation as soon as possible.
The affected bearings are the rotor main bearings that are fitted in the gearbox input shaft, a spokesman for Schaeffler explained.
"We are aware of individual cases of damage to rolling bearings of this type in the named turbines," he said. "We are currently investigating this issue to find the cause of the damage and are holding constructive talks with our customer on this matter."
For more on this story view: Vestas V90 crisis takes new twist after ZF gearbox failures
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