Bearing arrangement

Abstract

The invention regards a bearing arrangement (10), comprising a rolling bearing (1), wherein the rolling bearing (1) comprises an inner ring (3), an outer ring (2) and rolling elements (4) interposed between the inner (3) and outer (2) ring. Furthermore, the bearing 1 comprises a cage (5) for holding and separating the rolling elements (4), wherein said inner ring (3) presents an inner circumferential surface (31). A shaft (9) is also present, wherein the rolling bearing (1) is mounted on the shaft (9) via the inner circumferential surface (31) of the inner ring (3). The shaft (9) during operation is meant to oscillate in its axial direction, or is positioned in an angle a being (90 - y) degrees, wherein y is between 0 and 89, or the rolling elements (4) during operation are exposed of an axial force F, and the cage (5) presents means (6) for axially guiding the rolling elements (4) against at least one of the inner ring (3), the outer ring (2) or a separate element (7) located outside the rolling bearing (1). In addition, the invention concerns a wind turbine main shaft arrangement.

Description

technical field [0001] According to a first aspect, the invention relates to a bearing arrangement. [0002] According to a second aspect, the invention relates to a wind turbine main shaft arrangement. Background technique [0003] Bearings are used to support rotating shafts and to withstand radial and / or axial loads, such as rolling bearings. [0004] Bearings are used in many applications such as in the automotive industry, in industrial applications such as wind turbines, paper mills, steel manufacturing industries and many more. [0005] The inventors of the present invention have found that different bearing arrangements are involved in different applications. The relationships shown are caused, for example, by the cage in the bearing. The rolling elements in a bearing in the unloaded region can be negatively affected by the cage. The individual rollers or balls may for example be blocked by the cage, which would cause the rollers / balls to slide when they are in t...

AI Technical Summary

Problems solved by technology

This can lead to a shortened service life

Another effect that occurs for each roller element in its unloaded area is roller deflection, e.g. caused by the cage, which can lead to increased friction in the bearing, increased unwanted forces on the cage or increased wear of the bearing assembly

A further effect that occurs for each rolling element in its unloaded area is that each rolling element moves in its axial direction, which causes noise and damage to each rolling element and each raceway surface

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