To easily attach a sealing device even to a bearing having no seal case and a small-sized rolling bearing, in the sealing device of a rolling bearing which can perform ventilation so as to eliminate a pressure difference when there occurs the pressure difference between a bearing internal space and the outside of the bearing, and does not cause the leakage of grease sealed into the bearing to the outside by the pressure difference.SOLUTION: An annular seal member 7 is made to tightly adhere to seal grooves 5, 6, a ventilation hole 8 penetrating the vicinity of an annular middle part in a thickness direction, and communicating with a space between an inner ring and an outer ring is formed at the seal member 7, a sheet-shaped vent filter 9 is adhesively fixed to a surface of the seal member 7, and covers an opening part of the ventilation hole 8, and the vent filter 9 is formed of a ventilation porous raw material having waterproof performance and oil-proof performance.SELECTED DRAWING: Figure 1

    【課題】軸受内部空間と軸受外部とに圧力差が生じた場合に、圧力差を無くすように通気でき、かつ軸受内部に封入されたグリースを圧力差で外部に漏洩させない転がり軸受の密封装置であり、シールケースを備えていない軸受や小型の転がり軸受に対しても前記密封装置を簡便に装着可能にすることである。【解決手段】シール溝5、6に環形のシール部材7を密接させ、シール部材7に環形の厚さ方向の中ほど付近を貫通して内外輪間の空間に通じる通気孔8を形成し、シール部材7の表面に、シート状のベントフィルタ9を接着固定して通気孔8の開口部を覆い、このベントフィルタ9を防水性及び防油性を有する通気性多孔質素材で形成する。【選択図】図1


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    Title :

    SEALING DEVICE OF ROLLING BEARING AND SEALED ROLLING BEARING


    Additional title:

    転がり軸受の密封装置及び密封型転がり軸受


    Contributors:

    Publication date :

    2022-10-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16C SHAFTS , Wellen / B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F16J Kolben , PISTONS / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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