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Sealing device and rolling bearing device provided with sealing device

A technology for sealing devices and rolling bearings, which is applied in the direction of rolling contact bearings, roller bearings, and rotating bearings. It can solve problems such as difficult adjustments, manufacturing errors of sealing lips, inability to obtain heat prevention effects and sealing effects, and eliminate defects. Conditions, the effect of maintaining the sealing effect

Inactive Publication Date: 2012-07-11
JTEKT CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to changes in the axial relative positions of the first part and the second part and manufacturing errors of the sealing lip, it is very difficult to properly adjust the gap between the sealing lip and the first part during high-speed rotation. Possibility of being too small or too large to obtain the desired heat generation prevention effect and sealing effect

Method used

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  • Sealing device and rolling bearing device provided with sealing device
  • Sealing device and rolling bearing device provided with sealing device
  • Sealing device and rolling bearing device provided with sealing device

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Embodiment Construction

[0018] Hereinafter, a sealing device and a rolling bearing device according to the present invention will be described with reference to the drawings. figure 1 It is a sectional view showing the sealing device and the rolling bearing according to the first embodiment of the present invention. figure 2 is showing figure 1 An enlarged cross-sectional view of the sealing device in . In addition, the left-right direction in these figures is called an axial direction, and the up-down direction is called a radial direction. Also, regarding the axial direction, a direction from the inside of the rolling bearing 10 toward the outside is called an axially outer side, and a direction from the outside of the rolling bearing 10 toward the inside is called an axially inner side.

[0019] Such as figure 1 As shown, the rolling bearing 10 is, for example, a four-row tapered ball bearing used as a bearing for supporting rolls. The rolling bearing 10 includes two inner rings 11 , three ou...

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Abstract

The invention provides a sealing device and a rolling bearing device provided with the sealing device. The sealing device (18) seals an annular space between a first member (19) and a second member (20) that relatively rotate with respect to each other at a boundary portion between an inside and outside of a rolling bearing (10). The sealing device (18) includes a seal member (23) that is connected to one of the first member (19) and the second member (20) and that has a first seal lip (36) and a second seal lip (37) and a first sliding surface (24A) and a second sliding surface (24B) that are provided for the other one of the first member (19) and the second member (20) and over which the seal lips (36, 37) slide. A second contact pressure (PO) of the second seal lip (37) against the second sliding surface (24B) is higher than a first contact pressure (PI) of the first seal lip (36) against the first sliding surface (24A).

Description

technical field [0001] The present invention relates to a sealing device and a rolling bearing device provided with the sealing device. Background technique [0002] A rolling bearing that rotatably supports rolls of a rolling mill is provided with a sealing device to seal an annular space between an inner ring and an outer ring (for example, refer to JP 2001-254840 A). The sealing device described in Japanese Patent Application Laid-Open No. 2001-254840 seals between the second member installed on the inner ring side and the first member installed on the outer ring side, and has a sealing lip attached to the second member. component, and in close contact with the side of the first component in a slidable manner. The seal lip is in close contact with the first member in a slidable manner during low-speed rotation, but is detached from the first member due to elastic deformation due to centrifugal force during high-speed rotation, thereby forming a labyrinth seal. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78F16C19/38
CPCF16C33/78F16C33/7889F16J15/3256F16C19/388F16C33/783F16C33/7823F16J15/3456F16C33/7826F16C33/7813
Inventor 森本健固砂川雅英
Owner JTEKT CORP
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