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Multiple lips non-contact type bearing seal structure

A bearing sealing and non-contact technology, which is applied in the direction of bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of poor sealing effect, large friction torque, and unsatisfactory sealing structure, and achieve good sealing effect and high friction torque. small effect

Inactive Publication Date: 2008-03-12
CSC BEARING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact sealing structure has good sealing effect but large friction torque, which is not suitable for high-speed occasions; the non-contact sealing structure has small friction torque but poor sealing effect, which is only suitable for better environments and does not require high sealing. occasion
[0003] Sealed bearings used in high-speed rotating conditions require a non-contact structure and require a good sealing effect, but the existing sealing structure cannot meet the requirements

Method used

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  • Multiple lips non-contact type bearing seal structure
  • Multiple lips non-contact type bearing seal structure

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Embodiment Construction

[0015] As shown in Fig. 1, the present invention includes an outer ring 1, an inner ring 2 and a sealing ring 5, and the sealing ring 5 is composed of a skeleton 5a1 and a rubber 5a2.

[0016] The sealing ring 5 is installed in the sealing groove 4 on the outer ring 1 of the bearing, and there is no relative movement with the outer ring. There are several lips at the end of the inner hole of the sealing ring 5, wherein a pointed grease guide lip 6 and several grease storage lips (such as two grease storage lips, marked as 7 and 8, which can be rectangular in shape). There is a small gap (about 0.1-0.3mm) between the sealing ring 5 and the stepped sealing surface 3 on the outer surface of the inner ring 2. When the bearing is working, the sealing ring and the inner ring have relative movement.

[0017] The pointed grease guide lip 6 on the sealing ring 5 extends toward the center of the bearing beyond the sealing surface of the inner ring, and guides the grease to flow back to ...

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Abstract

The invention provides a multi-lip non-contact bearing seal structure which comprises an outer ring, an inner ring and a seal ring; wherein the seal ring is arranged between the two sides of the outer ring and the inner ring, the seal ring is fixed in a seal groove of the outer ring, the position corresponding with the seal ring of the inner surface of the inner ring is provided with a step type seal surface, the inner hole end of the seal ring is provided with a fat guide lip extending inwards and a plurality of fat storage lips which extends downwards and have the gap with the seal surface of the inner ring. The invention has the advantages of the good seal effect and the seal structure with the small frictional moment, and completely meets the design requirements under the working conditions of 2,0000 rpm.

Description

technical field [0001] The invention relates to a sealing structure for bearings, in particular to a sealing structure applied to various sealing bearings that require sealing. Background technique [0002] For mechanical products, the more compact the structure, the better. Similarly, in order to ensure the compactness of the structure, the bearing that bears the rotating support in the mechanical product is required to have its own sealing device in structure to save the additional sealing assembly. The bearing with its own sealing device can be pre-filled with corresponding grease according to its use conditions to enhance the working function and service life. In existing bearings, the sealing ring is generally fixed in the sealing groove of the outer ring of the bearing. According to whether the sealing ring is in contact with the inner ring, it is divided into two types: contact seal and non-contact seal. The contact sealing structure has good sealing effect but lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78
Inventor 沈忠明郭静瑜邵雪良邵彦包建飞
Owner CSC BEARING