Tapered roller bearing

Abstract

A tapered roller bearing having raceway rings including an inner ring (4) and an outer ring (3), rollers (1) rolling between the inner ring (4) and the outer ring (3), and a retainer (2) having pockets for retaining the rollers (1) and positioned near the outer ring (3). The bearing satisfies deltapr > deltapc and simultaneously -2 <=(delta - deltapr) / (deltapr - deltapc) <= 0, where delta is a radial clearance between the retainer (2) and the outer ring (3) when the retainer (2) is at a neutral position, dpris a radial clearance between a roller (1) retained in a pocket and the retainer (2), and deltapc is a circumferential clearance between the roller (1) retained in the pocket and the retainer (2).

Description

technical field [0001] The present invention relates to a tapered roller bearing, in particular to a tapered roller bearing which allows the cage to be in contact with the raceway surface. Background technique [0002] In the field of rolling bearings, as a method of increasing the load capacity, generally, the number of rolling elements is increased. When the number of rolling elements is increased, the circumferential intervals of the rolling elements become narrower. In contrast, by enlarging the diameter of the cage to relatively increase the circumferential width of the cage, the rigidity of the cage can be ensured. Therefore, from the viewpoint of increasing the rigidity of the cage, it is desirable to minimize the gap between the cage and the raceway surface (outer ring / inner ring). [0003] As a bearing that allows the cage to contact the raceway surface of the outer ring during operation, there is, for example, the bearing described in Japanese Patent Application ...

AI Technical Summary

Problems solved by technology

This is not good from the viewpoint of ensuring the strength of the cage

[0006] The lower limit of the gap between the cage and the raceway ring is not disclosed in Patent Document 1 at all.

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