The main bearing of a wind turbine plays a critical role. It provides support for the main shaft and the blades of a wind turbine, as well as coping with the associated dynamic forces. This means it is vital to
protect to avoid costly repairs or replacements.
Main bearing failures make up 3% of major failings of wind turbines, according to a Make Consulting O&M report in 2016. There are various estimates on how much a main bearing replacement costs but it can be between €75,000 to €160,000 for onshore turbines and up to €500,000 for an offshore turbine.
There is also the complexity of replacing the component, on top of its cost – wind turbine towers can be 100 metres tall or more, which means an expensive crane is needed to carry out the work.
Download this Windpower Monthly expert report, produced in partnership with Castrol, to find out how you can decrease costly unplanned maintenance and instead benefit from more efficient planned maintenance.