A bearing dust cover

Abstract

The invention discloses a dust cover for a bearing. The dust cover is used in the bearing and is provided with 9 pressure reducing grooves 511 which are formed at the matched position of the dust cover and a bearing outer ring; each pressure reducing groove comprises a first face and a second face which is opposite to the first face; the second face is perpendicular to a bearing central axis X; the angle formed between the first face and the second face is 35 to 45 degrees; the pressure reducing grooves 511 are distributed on the dust cover for the bearing at intervals; and the width of the widest part of each pressure reducing groove 511 is 0.1 to 0.14mm, and each pressure reducing groove is conical. According to the dust cover, each pressure reducing groove is conical, a large angle is formed between an opening of each pressure reducing groove and an air suction direction P, the width of the widest part of each pressure reducing groove is reduced, and the number of the pressure reducing grooves is increased, so that dust cannot enter the bearing with the dust cover easily.

Description

technical field [0001] The invention relates to a bearing, in particular to a bearing dust cover. Background technique [0002] Bearings are components that fix and reduce the friction coefficient of loads during mechanical transmission. It can also be said that when other parts move relative to each other on the shaft, it is used to reduce the friction coefficient in the process of power transmission and keep the center of the shaft fixed. Bearings are an important part of modern mechanical equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of the mechanical load during the transmission process of the equipment. [0003] Such as figure 1 It is a structural schematic diagram of an existing general bearing. The bearing 100 includes: a bearing outer ring 10, a bearing inner ring 20 located inside the bearing outer ring 10, a cage 40 fixed between the bearing outer ring 10 and the bearing inner ring 20, and A number of...

AI Technical Summary

Problems solved by technology

[0005] In the existing general design, the decompression groove 511 is located at the turning point of the dust cover 51. The direction of the decompression groove 511 is consistent with the air suction direction P, and the opening of the decompression groove 511 is relatively large. When the bearing rotates at a high speed, a Air suction, a large amount of dust enters with the air, resulting in a reduction in the service life of the bearing

[0006] image 3 Yes figure 2 The structural schematic diagram of the decompression groove shown in the K direction, from figure 1 Look at the decompression groove 51 from the K direction of , the decompression groove 511 is a square groove, and a large amount of dust will enter, resulting in a low service life of the bearing

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