Three lips contact type seal bearing

A contact-type sealing and bearing technology, applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve problems such as the reduction of sealing performance, and achieve the effect of improving sealing performance, reducing package capacity and prolonging working life.

Inactive Publication Date: 2008-09-17
陆连运
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the problem that the sealing performance of the bearing is reduced when it works in a harsh environment. The present invention provides a three-lip contact-sealed bearing. It has good sealing performance, thereby reducing the wear of the bearing and prolonging the working life of the bearing

Method used

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  • Three lips contact type seal bearing
  • Three lips contact type seal bearing
  • Three lips contact type seal bearing

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Embodiment Construction

[0013] Such as figure 1 figure 2 The three-lip contact sealed bearing shown has bearing outer ring 1, bearing inner ring 2, cage 3, rolling elements 4, sealing ring 5, and the outer ring of sealing ring 5 is embedded and fixed on the inner surface of bearing outer ring 1 , the number of sealing rings 5 ​​is two, symmetrically arranged with respect to the rolling elements 4, the sealing ring 5 has a sealing member 51 and a skeleton 52, and there are three contact lips 511, 512 arranged in parallel on the inner periphery of the sealing member 51, 513, the three contact lips 511, 512, 513 are in close contact with the outer diameter surface of the bearing inner ring 2, and the unilateral interference between the contact lips 511, 512, 513 and the outer diameter surface of the bearing inner ring 2 is 1.5mm, which can make the contact The lips 511, 512, 513 are more tightly combined with the outer diameter surface of the bearing inner ring 2, and the thickness of the outermost c...

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Abstract

The invention relates to a three-lip contact-type sealing bearing which comprises a bearing outer ring, a bearing inner race, a retainer, a rolling body and a sealing ring, wherein the sealing ring is provided with a sealing element and a frame; three parallel contacting lips are arranged at the inside circumference of the sealing element and closely contact the external diametric plane of the bearing inner race; the mono-lateral shrink range of the contacting lips and the external diametric plane of the bearing inner race is 1.2mm to 1.8mm; the width of the outermost contacting lip is larger than the width of the other two contacting lips; the external lateral face of the frame is provided with a rib of a positioning sealing element; the closing diameter of the rib is larger than the outer diameter of the bearing outer bring by 8mm to 12mm; the housing washer of the sealing ring is embedded on the inner surface of the bearing outer ring. The sealing bearing has the advantages that good sealing performance is achieved; the entering of external impurity such as dust and mud water into the interior of the bearing and the escape of lubricated lipid in the bearing are avoided; the wear of the bearing is reduced; and the service life of the bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a three-lip contact sealed bearing. Background technique [0002] The working environment of pump machinery, oilfield machinery and other equipment is very harsh, and its working parts often operate in places mixed with muddy water. Therefore, the sealing performance and working life of the bearings used are very high. Originally, the bearings were automatically With sealing ring, such as image 3 As shown, there is a seal 7 and a skeleton 6. The inner circumference of the seal 7 has three contact lips 71 of the same thickness arranged in parallel, which are in contact with the outer diameter surface of the inner ring of the bearing. The interference is about 0.4mm, and there is a rib 61 for positioning the seal on the outer surface of the skeleton 6, and its closing diameter is about 1.0mm larger than the outer diameter of the inner ring of the bearing. This structure makes the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78
CPCF16C33/7853F16C33/7823
Inventor 陆全王春南杨怀庆朱维国赵建文杨龙妹
Owner 陆连运
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