| 摘要 |
PURPOSE:To damp vibration, to reduce the number of revolutions, and to reduce incurring of a mechanical loss while improving reliability by a method wherein a clearance is provided between an inner lace and a shaft by means of a ball bearing for floating. CONSTITUTION:Lubricating oil is fed in an oil hole 13 in an outer lace 9 of a ball bearing 8 through an oil passage 16. The lubricating oil lubricates a ball 11 and tries to escape from both ends of the ball bearing 8. However, an impediment by a seal 12 causes a most of the lubricating oil to flow to a clearance 17 through an oil hole 14 formed in an inner lace 10. After an oil film is formed in the clearance 17, the lubricating oil flows to the outside. |
