All wind turbines are large, but the REpower Systems 5M wind turbine is huge.

World's Largest Wind Turbine Generates New Large-Shaft Bearing Technology

Bearing technology key component to solving world’s energy demands

Sweden-based SKF Group’s design of a bearing system for a giant wind turbine with an unusual rotor shaft led to the development of the largest-known CARB® toroidal roller bearing system, as well as to advances in bearing assembly techniques and axial fixation methodology for large bearings.