High-speed sealing integrated lower roller bearing

Abstract

The invention discloses a high-speed sealing integrated lower roller bearing, comprising a bearing inner ring, a bearing outer ring, steel balls, a retainer and a dustproof seal ring, wherein the inner wall of the bearing outer ring is provided with multiple channels, the outer wall of the bearing inner ring is correspondingly provided with multiple channels, thus multiple roller paths are formed; each roller path clamps multiple steel balls, the steel balls are equispaced from each other by the retainer, and the multiple roller paths are symmetrically arranged along the direction of an axial symmetric line of the bearing; and the outer wall of the dustproof seal ring and the outer side of the inner wall of the bearing outer ring are tightly matched, and the inner wall of the dustproof seal ring and the outer side of the outer wall of the bearing inner ring are in clearance fit. By adopting the technical scheme of the invention, frictional resistance and noise can be greatly reduced, and rotating speed can be greatly improved; meanwhile, oil is prevented from leaking, oil is not required to be added for a long time, and dust can be prevented from entering the high-speed sealing integrated lower roller bearing.

Description

technical field [0001] The invention relates to a bearing for textile machinery, in particular to a high-speed sealed integral bottom roller bearing. Background technique [0002] In the existing technology, the bottom roller bearings commonly used on textile machinery equipment, such as figure 1 As shown, it is composed of an outer ring A, an inner ring B and a needle roller C arranged between the outer ring and the inner ring. During use, the working performance of the bearing is maintained by adding lubricating grease frequently. Generally speaking, the inner ring of the bearing is installed on the shoulder of the roller shaft, and the outer ring of the bearing is installed on the roller bearing seat on the equipment. [0003] In the process of textile work, the inventor found that the existing bottom roller bearings have the following problems: first, there is no sealing mechanism on both sides of the bearings, and as we all know, cotton wool, silk threads, dust, etc. ...

AI Technical Summary

Problems solved by technology

[0003] In the process of textile work, the inventor found that the existing bottom roller bearings have the following problems: first, there is no sealing mechanism on both sides of the bearings, and as we all know, cotton wool, silk threads, dust, etc. There are many, and it is easy to enter the inside of the bearing, which leads to an increase in the friction coefficient of the needle roller and affects the service life of the bearing; second, there is no sealing device on both sides, which causes the grease added to the bearing to leak easily. The grease cannot be fully in place, resulting in dry friction of the needle roller, which affects the life; third, because the contact surface of the needle roller is relatively large, the grease lubrication is not sufficient, so there will be an increase in the friction resistance between the needle roller and the inner and outer rings. The bearing speed cannot be increased; fourth, the needle roller is in surface contact with the inner and outer rings, and the friction coefficient is large, resulting in high noise, which makes the working environment of the operator very bad

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