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Rolling bearing unit with combination seal ring

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

Active Publication Date: 2014-07-02
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
  • Rolling bearing unit with combination seal ring
  • Rolling bearing unit with combination seal ring

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 studied. 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 axi...

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PUM

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Abstract

Construction of a rolling bearing unit with a combined seal ring that enables press fitting of a cylindrical section 15 of a slinger 13 to be pressure fitted on to a slinger fitting surface 20 of an inner ring 19a without losing the seal between the slinger fitting surface 20 and the cylindrical section 15 is achieved. Of the surface of the inner ring 19a, the continuous section that comprises a portion corresponding to the slinger fitting surface portion 20, a portion corresponding to the chamfered section 25a and a joining section 27a between these portions are simultaneously ground with a formed grindstone. As a result, the continuous section is entirely formed into a flat surface with no non-differential corners in the cross section, or in other words, with no sharp corners.

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 Patents(China)
IPC IPC(8): F16C33/78B60B35/18F16C19/18F16C33/64
CPCF16C19/186F16C33/64F16C43/045F16C2226/10F16C33/7883F16C33/585F16C33/783F16C2220/70F16C2226/12F16C2326/02Y10T29/49679
Inventor 黑原博文
Owner NSK LTD
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