BEARING ARRANGEMENT FOR A ROTATING COMPONENT OF A WIND TURBINE

The invention concerns a bearing arrangement (114), for a rotating component of a wind turbine (100), with two roller bearings. The rotating component is supported by the second roller bearings and a bearing housing (126). The roller bearings, the rotating component and the bearing housing (126) are arranged to form a pretension circuit (138). The first roller bearing (128) comprises a first bearing inner ring (140), a first bearing outer ring (142) and rolling elements (143). The first bearing outer ring (142) is axially moveable along the rotational axis (R) with respect to the bearing housing (126) and/or radially deformable with respect to the rotational axis (R). An adjustment device (144) is provided, which extends through a through-hole (158) of the bearing housing (126) and is accessible from outside (159) the bearing housing (126), wherein upon actuation the adjustment device (144) causes an axial movement and/or a radial deformation of the first bearing outer ring (142) to adjust the pretension of the bearing arrangement (114).