Miniature shaft special for computer

The utility model discloses a miniature shaft special for a computer, which comprises a rotating shaft, a first fixing shaft is arranged at the left end of the rotating shaft, a first positioning slot is arranged in the first fixing shaft, a first damper is arranged in the first positioning slot, and a first positioning convex ring is integrally arranged at the local position of the section, inserted into the first positioning slot, of the left end of the rotating shaft. A first annular groove and a second annular groove are sequentially formed in the outer circle face of the first positioning convex ring from left to right, a first lip-shaped sealing ring is arranged in the first annular groove in a sleeved mode, a first O-shaped sealing ring is arranged in the second annular groove in a sleeved mode, and a lubricating oil flow dividing channel is axially formed in the middle of the rotating shaft. A lubricating oil adding channel is arranged in the middle of the rotating shaft in the radial direction, the l