| 摘要 |
PROBLEM TO BE SOLVED: To reduce a loss of torque due to a flow resistance of lubricating oil in a tapered roller bearing inside which the lubricating oil inflows. SOLUTION: A tapered hole 4e having a spiral groove is formed at the central portion of a tapered roller 4 in order to make the lubricating oil inflow therein. By this configuration, the amount of the lubricating oil to be accumulated inside the bearing can be reduced, and the loss of the torque due to the flow resistance of the lubricating oil can be reduced. COPYRIGHT: (C)2008,JPO&INPIT
|
