| 摘要 |
PURPOSE:To perfectly prevent outflow of lubricating oil solated by shearing at a bearing portion by disposing a pocket-like storing portion on the side edge of a bearing sliding portion, and filling the storing portion with some of a lubricant having thixotropic property. CONSTITUTION:Some of a lubricant 3 having thixotropic property filling in a sliding portion between a rotary shaft 1 and a bearing member 2 is filled up in a pocket-like storing portion 4 disposed on at least one sliding portion of the bearing portion 2. When the rotary shaft 1 starts rotating, shearing is gradually applied to the sliding portion to present solated liquid, thereby lowering torque. The lubricant 3 in the storing portion 4 is not subjected to shearing at a sliding portion with the rotary shaft 1 to form a suitable labyrinth gap by channelling, and the most of the lubricant is kept in the gel state. Accordingly, the gel lubricant is adapted to prevent outflow of a lubricant solated by shearing at the sliding surface. |
