| 摘要 |
PROBLEM TO BE SOLVED: To provide an FDB capable of easily injecting a lubricant in a short time, preventing intrusion of air bubbles, and easily checking an amount of the lubricant, to provide a disk driving device suitable for faster speed by providing this FDB, and also to provide a method for manufacturing the disk driving device.SOLUTION: A disk driving device comprises: a base member 12; a hub 10; a magnet 34; a bearing body; a shaft body including a shaft 11, a first flange 15, and a second flange 16; a first annular member 18; a radial dynamic pressure groove 20; a first thrust dynamic pressure groove 21 and a second thrust dynamic pressure groove 22; a first capillary seal 24 and a second capillary seal 25; a hollow annular wall part 12D which has a recess in an end surface and to which a core is externally fixed; an annular member in which a seal is arranged; a lubricant 23 injected into the radial dynamic pressure grooves, the thrust dynamic pressure grooves, and the capillary seals; and a communication passage of the lubricant. |
