A ball bearing 1 includes an inner ring 2 having an inner ring raceway surface 11 in the outer periphery thereof, an outer ring 3 having an outer ring raceway surface 15 in the inner periphery thereof, a plurality of balls 4 arranged between the inner raceway surface and the outer ring raceway surface 11 and 15, and a retainer. The retainer 5 includes a plurality of pocket holes 27. The inner periphery of the outer ring 3 is contacted with the outer peripheral surface 28 of the retainer to guide the outside diameter of the retainer 5. In the inner periphery of the outer ring 3, there is formed a grease storage groove 20 only on one side in the axial direction X with respect to the outer ring raceway surface 15. The grease storage groove 20 communicates with the outer ring raceway surface 15. The end edge 40 of the grease storage groove 20 on one side in the axial direction X is matched, with respect to the axial direction X, to the end parts of the peripheral walls 30 of the pocket holes 27 on one side in the axial direction X.


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    Title :

    POWER CIRCUIT ABNORMALITY DETECTION METHOD


    Additional title:

    VERFAHREN ZUR ERKENNUNG VON LEISTUNGSSCHALTUNGSFEHLERN
    PROCÉDÉ DE DÉTECTION D'ANOMALIE DE CIRCUIT D'ALIMENTATION


    Contributors:
    WAKIDA MAYUKO (author) / IWAI YUTA (author) / SUMASU HIROSHI (author) / KIMURA KOHJI (author)

    Publication date :

    2021-03-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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