Oversize self-aligning roller bearing

Abstract

The invention discloses an oversize self-aligning roller bearing, which is provided with an outer ring (1) and an inner ring (2). A retainer is arranged between the outer ring (1) and the inner ring (2), and two groups of spherical rollers (4) are arranged in the retainer. The oversize self-aligning roller bearing is characterized in that: the rotation center of each spherical roller (4) is provided with a through hole; and the retainer consists of a pin shaft (9), and an inner plate annular retainer (6) and an outer plate annular retainer (16) at two ends of the pin shaft (9), wherein the pin shaft (9) runs through the through hole at the rotation center of the spherical roller (4), and the inner plate annular retainer and the outer plate annular retainer are arranged at two end faces of the spherical roller (4). The retainer is not integrated, but assembled, so the requirement of assembly precision between the retainer and the spherical rollers is reduced, and the retainer is easy to process and reduces the manufacturing cost. Moreover, the bearing can increase the number of the rollers as much as possible, and improves the rated load.

Description

Technical field: [0001] The invention relates to a bearing, in particular to a super large self-aligning roller bearing with a new structure. Background technique: [0002] As a commonly used standard part, bearings have been widely used in various mechanical fields, but there are the following problems in the existing structure of wide series super large bearings: [0003] 1. The beam between the two pockets of the comb-shaped cage of the existing structure must have a certain width to meet the strength requirements of the cage, which limits the increase in the number of rollers and the increase in the rated load of the bearing. [0004] 2. The pockets of the comb-shaped cage of the existing structure must have a certain containment capacity, otherwise the rollers will easily fall off, which requires that the outer diameter of the cage should not be too small, but it should not be too large, otherwise the bearing assembly will be difficult. This increases the difficulty of...

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Problems solved by technology

[0003] 1. The beam between the two pockets of the comb-shaped cage of the existing structure must have a certain width to meet the strength requirements of the cage, which limits the increase in the number of rollers and the increase in the rated load of the bearing

[0004] 2. The pockets of the comb-shaped cage of the existing structure must have a certain containment capacity, otherwise the rollers will easily fall off, which requires that the outer diameter of the cage should not be too small, but it should not be too large, otherwise the bearing assembly will be difficult. This increases the difficulty of wide series bearing design

[0005] 3. For the comb-shaped cage of the existing structure, due to the machining error of the pocket diameter, the roller also has a machining error. Although the errors of both are very small and within the control range, the smallest pocket and the roller may appear during assembly. In the maximum case, part of the gap is eaten, and the cage is easily deformed during the pocket hole processing, resulting in a deviation in the center diameter of the pocket hole. These phenomena will easily cause the rotation of the bearing to be inflexible after assembly.

[0006] 4. Due to the relatively large size of the comb-shaped cage of the super-large bearing, the cost of the work card measuring tool is also relatively high

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