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Rolling bearing unit with combination seal ring, and method for manufacturing same

A rolling bearing and combined sealing technology, which is applied to rolling contact bearings, bearing elements, bearings with rotating motion, etc., can solve problems such as easy intrusion and grease leakage

Active Publication Date: 2011-11-09
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, the grease existing in the annular space 8 easily leaks to the external space due to the scar, and foreign matter such as moisture and dust existing in the external space easily enters the annular space 8 .

Method used

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  • Rolling bearing unit with combination seal ring, and method for manufacturing same
  • Rolling bearing unit with combination seal ring, and method for manufacturing same
  • Rolling bearing unit with combination seal ring, and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] Means for Carrying Out the Invention

[0055] [First example of embodiment]

[0056] Figure 1~5 The first example of the embodiment of the present invention is shown. In addition, this example is characterized in that the shape of the axially inner end outer peripheral surface of the inner ring 19a, the shape of the axially inner end inner peripheral surface of the outer ring 2a, and their processing methods were considered. The structure and function of other parts are different from the above Figures 15-16 The situation of the conventional structure shown is the same, therefore, overlapping illustrations and descriptions will be omitted or simplified, and the following description will focus on the characteristic parts of this example.

[0057]In the case of this example, the part of the cylindrical fitting surface 20 for oil deflector existing in the axial inner end of the outer peripheral surface of the inner ring 19a and the cross-sectional arc existing in the ...

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PUM

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Abstract

A structure which enables a cylindrical section (15) of a slinger (13) to be press-fitted into a slinger fitting surface (20) of an inner ring (19a) without impairing the sealing ability between the cylindrical section (15) and the slinger fitting surface (20). A continuous portion of the surface of an inner ring (19a) are ground at a time by a vertical rotary grinding stone after the inner ring (19a) is subjected to heat treatment, the continuous portion being composed of the portion of the slinger fitting surface (20), the portion of a chamfered section (25a), and the portion of the joint (27a) between the portion of the slinger fitting surface (20) and the portion of the chamfered section (25a). As a result, the entire continuous portion is formed as a flat smooth surface in which a corner which cannot be differentiated with respect to a cross-sectional shape thereof, that is, a corner which has a pointed edge, is not present.

Description

technical field [0001] This invention relates to a rolling bearing unit for rotatably supporting, for example, a wheel of an automobile with respect to a suspension device, and more specifically, relates to a mutual-facing peripheral surface of a rotating-side race ring and a stationary-side race ring. A rolling bearing unit with a composite seal ring, in which the end openings of the annular spaces between which a plurality of rolling elements are arranged are blocked by a composite seal ring composed of an oil slinger ring and a seal ring, and an improvement on its manufacturing method. Background technique [0002] Figures 15-16 An example of a conventional structure of a rolling bearing unit for rotatably supporting a wheel of an automobile with respect to a suspension is shown. Figures 15-16 In the rolling bearing unit 1 shown, an outer ring 2 serving as a stationary side track ring that is supported and fixed on a suspension device without rotation during use, and an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/78B60B35/18F16C19/18F16C33/64
CPCF16C33/64F16C43/045F16C2226/10F16C19/186F16C33/7883F16C33/585F16C33/783F16C2220/70F16C2226/12F16C2326/02Y10T29/49679
Inventor 黑原博文
Owner NSK LTD
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