Seal for an antifriction bearing

A technology of rolling bearings and seals, which is applied in the field of elastic sealing discs, can solve problems such as the influence of the service life of rolling bearings, increase the heating of rolling bearings, and the loss of lubricating oil, and achieve the effect of simple and damage-free assembly

Active Publication Date: 2006-08-16
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the operating state of the rolling bearing, there is the risk that contaminants migrate into the sealing area between the sealing edges of the inner sealing lip and in this case eliminate the sealing area and penetrate into the interior of the rolling bearing
The known design of the seal also has the disadvantage that with increasing rotational speed the sliding inner sealing lip is axially supported on the wall of the groove by the increased pressing force
This disadvantageously increases the friction between the sealing lip and the bearing ring, as well as the heating of the rolling bearing
High bearing temperatures lead to loss of lubricating oil, which directly affects the service life of rolling bearings

Method used

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  • Seal for an antifriction bearing

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Embodiment Construction

[0021] The single figure shows the structure of a seal 1 according to the invention for a rolling bearing 2 in the assembled state. The seal 1 comprises a sealing disk 3 , which is fastened on the outer circumference in an elastic form-fitting manner in an annular groove 4 of an outer circumferential bearing ring 5 . The sealing disk 3 surrounded by the bearing ring 5 closes the annular installation space 6 of the rolling bearing 2 , into which the rolling elements 8 guided in the rolling element cage 7 are inserted, which are guided between the outer bearing ring 5 and the inner bearing ring 9 in orbit. For increased strength, the sealing disc 3 made of elastic sealing material is provided with a core bone 10 which is designed in the form of a disc. In the direction of the outer bearing ring 5 , the core rib 10 forms a right-angled chamfered rib 11 . In the direction of the inner bearing ring 9 the core bar 10 comprises inwardly inclined legs 12 .

[0022] Consistently, th...

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PUM

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Abstract

The invention relates to a sealing arrangement ( 1 ) for a rolling-contact bearing ( 2 ), comprising a rotating sealing disk ( 3 ), which engages with a sealing lip ( 14 ) in a recess ( 16 ) of the inner bearing ring ( 5 ). The sealing lip ( 14 ) is also provided with a bead ( 24 ), the arrangement and fitted position of which bring about a prestressing of the sealing lip ( 14 ) on the wall ( 18 ) of the recess ( 16 ).

Description

technical field [0001] The invention relates to a seal for rolling bearings comprising an elastic sealing disc surrounded by an outer bearing ring or housing. The sealing disk, which at least partially has a mandrel, is inserted into the receptacle of the outer bearing ring in a form-fitting manner and forms a flexible sealing lip on the inside, which engages in a groove of the inner bearing ring. For this purpose, the sealing lip is provided with a sealing edge which, in the assembled state, bears axially against the wall of the groove. Background technique [0002] Such a sealing concept is known, for example, from DE 18 01 894 C3, the sealing disk having different arrangements of the sealing lips. All embodiments are sealing disks which are axially supported on the inner wall of the groove by the first sealing lip. The second sealing lip maintains an annular gap, that is to say with a gap, associated with the cylindrical part of the inner bearing ring axially in front o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78
CPCF16C33/7853F16C33/782F16C33/76F16C33/78
Inventor 雷纳·申克伯纳德·尼古拉托马斯·菲克特沃尔弗拉姆·科鲁赫费尔哈拉尔德·佩施克
Owner SCHAEFFLER TECH AG & CO KG
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