The present invention is a method for mounting a rolling bearing (1) on a wind turbine rotor shaft (2), wherein the bearing (1) comprises an outer ring (12), an inner ring (13), and an inner ring. A rolling element (14) interposed between the outer ring and the inner ring (13) presents an inner circumferential surface (15) with a frustoconical profile. The rolling bearing (1) is intended to be attached to a corresponding conical seat (21) on the rotor shaft (2) by a frustoconical inner circumferential surface (15). The method:-pushes liquid between the inner circumferential surface (15) of the inner ring (13) and the conical sheet (21), thereby raising the rolling bearing (1) on the conical sheet (21) And a step (200) of pushing up the rolling bearing (1) on the conical sheet (21) by an axial force acting on the rolling bearing (1), wherein the liquid is , Pushed between the two surfaces (15, 21) at the axially terminating portion (16) of the inner circumferential surface. The present invention further relates to a bearing assembly.
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