| 摘要 |
PURPOSE:To improve the lubricating effect of a bearing by providing the center of a fixed shaft detachably supporting a rolling bearing with an oil mist supply passage, and radially providing the tip of the above-mentioned passage with the first communicating hole with fittings. CONSTITUTION:The center of a fixed shaft 1 is formed with an oil mist supply passage 11, and its tip is radially formed with the first communicating hole 12, and the tip of the first communicating hole 12 is provided with fittings 10. In addition to that, the inner peripheral surface of a split inner ring 2 is formed with a ring-shaped groove 21, and the spot where the groove 21 corresponds to the fittings 10 is radially provided with a through groove 22. The oil mist supplied through the passage 11 is separated into oil and air by means of the fittings 10, and then the oil is supplied to rolling elements 4 through the ring-shaped groove 21 of the inner ring 2, end the air is discharged outside through another guiding passage 13.
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