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AssigneeSankyo Seiki Mfg. Co., Ltd.
InventorsMasayuki Ishikawa, Hidetoshi Sunohara, Nobuyuki Nakamori, Takao Nakae
Estimating the term…
An oil dynamic pressure bearing device comprises a bearing, a shaft freely rotatably supported by the bearing in a non-contact manner, and a dynamic pressure bearing section defined by at least one dynamic pressure groove on at least one side of the shaft and the bearing for generating dynamic pressure by a lubricant fluid filled in a minute gap between the shaft and the bearing. Grinding scratches are formed on the dynamic pressure bearing section in a circumferential direction of the dynamic pressure bearing section. The dynamic pressure groove may be formed only on one side of either the shaft or the bearing at the dynamic pressure bearing section and the grinding scratches are formed only on the other side.
An oil dynamic pressure bearing device comprising a bearing and a shaft freely rotatably supported by the bearing in a non-contact manner, the oil dynamic pressure bearing device comprising:
An a method for manufacturing an oil dynamic pressure bearing device comprising a bearing, a shaft freely rotatably supported by the bearing in a non-contact manner, and a dynamic pressure bearing section defined by dynamic pressure grooves provided on at least one side of the shaft and the bearing for generating dynamic pressure by a lubricant fluid filled in a minute gap between the shaft and the bearing, the method comprising:
Dependencies are inferred from the claim text.