Abstract: In order to construct windmills with high capacity the machinery need to be constructed and dimensioned in such a manner that any type of damage to the machinery is avoided. This is best ensured by a hub construction, which according to the invention comprises a hub shaft (17) which to the front is connected to the blades (11) and which immediately behind the hub is connected to a gear box (22).Dangerous vibrations are hereby avoided, because the shaft (17) is primarily exposed merely to torsional forces.By further constructing the hub around a funnel-shaped body (5, 6) which to the back is suspended in a machine housing (1) and which on the outside carries main bearings (7), and where the blades (11) rest on the outer ring of the main bearings (7), the main bearings will primarily be exposed to radial loads.