METHOD TO MOUNT A ROLLING BEARING ON A WIND TURBINE SHAFT AND A WIND TURBINE BEARING ASSEMBLY

摘要

The invention regards a method to mount a rolling bearing (1 ) onto a wind turbine rotor shaft (2), wherein the bearing (1 ) presents an outer ring (12), an inner ring (13) and rolling elements (14) interposed in-between the rings, and wherein the inner ring (13) presents an inner circumferential surface (15), which surface presents a frusto-conical profile. The rolling bearing (1 ) is meant to be mounted on a corresponding conical seat (21 ) on the rotor shaft (2) by the frusto-conical inner circumferential surface (15). The method comprises the following steps: - (100) pressing a liquid in-between the inner circumferential surface (15) of the inner ring (13) and the conical seat (21 ) to thereby facilitate the driving up of the rolling bearing (1 )on the conical seat (21 ), - (200) driving up the rolling bearing (1 ) on the conical seat (21 ) by an axial force acting on the rolling bearing (1 ), - wherein the liquid is pressed in-between the two surfaces (15, 21 ) at an axial end portion (16) of the inner circumferential surface. Furthermore, the invention regards a bearing assembly.