| 摘要 |
PROBLEM TO BE SOLVED: To supply grease to labyrinths at certain timing without disassembling a main motor, and to increase an amount of grease which occupies space volume of the labyrinth. SOLUTION: A shaft 13, a rotor 22, a stator 23, and bearing devices 11a, 11b are arranged inside a cylindrical frame 21. The bearing devices 11a, 11b are structured with bearings 12a, 12b, a lid 14a or a housing 14b mounted on the outer rings of the bearings 12a, 12b, and collars 15aa, 15ab, 15b mounted at the shaft 13 side. The labyrinths 16aa, 16ab, 16b spaced at prescribed intervals are formed between the lid 14a or the housing 14b and the collars 15aa, 15ab, 15b. Grease supply pipes 17a, 17b, 17c for supplying grease to the labyrinths 16aa, 16ab, 16b are provided on the lid 14a or the housing 14b. COPYRIGHT: (C)2009,JPO&INPIT
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