Combination type hollow bearing roller

Abstract

The invention relates to a combined hollow bearing roller, wherein an expanding sleeve 1 is arranged in a sleeve 2, the sleeve 2 is of a cylindrical shape or a circular cone shape, an inner cavity is of an inner frustum shape, the expanding sleeve 1 is of a frustum shape, and the inner cavity is of an inner frustum shape. When the expanding sleeve 1 is forced to axially move from a large diameter end to a small diameter end through applying an axial force to the expanding sleeve 1 and the sleeve 2, because the incremental launching effect of a conical surface, the outer ring diameter of the sleeve 2 is evenly increased, thereby achieving the purpose of eliminating the assembly gap of a bearing and increasing the precision grade. The combined hollow bearing roller has four advantages of saving materials, high limiting rotational speed, high assembly accuracy and vibration reduction anti-noise and the like.

Description

technical field [0001] The invention relates to a bearing element, especially a combined hollow bearing roller which can replace the solid roller of a traditional rolling bearing. Background technique [0002] Rolling bearings are an important standardized component that supports rotating shaft parts. Traditional rolling bearings generally use solid rollers as their roller components. Practice has proved that the existing solid rollers of rolling bearings have the following defects: [0003] 1. The mass of the solid structure roller is large, so the centrifugal inertial force generated when the bearing runs at high speed is large, which often leads to a low limit speed; [0004] 2. The consumption of bearing steel materials is too much, and the material cost is too high; [0005] 3. It is difficult to manufacture high-precision bearing rollers, resulting in a low proportion of high-value-added precision bearings; [0006] 4. The precision of traditional ordinary bearings i...

AI Technical Summary

Problems solved by technology

[0003] 1. The mass of the solid structure roller is large, so the centrifugal inertial force generated when the bearing runs at high speed is large, which often leads to a low limit speed;

[0004] 2. The consumption of bearing steel materials is too much, and the material cost is too high;

[0005] 3. It is difficult to manufacture high-precision bearing rollers, resulting in a low proportion of high-value-added precision bearings;

[0006] 4. The precision of traditional ordinary bearings is low, and the gap between the rolling elements is large, resulting in large vibration and noise during operation

Therefore, according to the conventional method, in order to improve the precision grade of rolling bearings, the manufacturing precision of each component of the bearing must be improved, but with the improvement of precision is the extension of processing time and the decline of output, which leads to a sharp increase in manufacturing costs

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