| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a roller bearing device capable of suppressing a rise in a temperature of a bearing caused by the agitation resistance of lubricating oil by smoothly draining the lubricating oil that has infiltrated into the bearing to the outside of the bearing. <P>SOLUTION: The roller bearing device comprises a roller bearing Br and an oil supply/drainage mechanism Ku, and an inner ring extension 6 extending in the axial direction is provided in an inner ring 1 and a spacer 7 that is adjacent to an outer ring 2 and whose inner peripheral surface faces the inner ring extension 6 is provided. The oil supply/drainage mechanism Ku has an inner ring peripheral groove 8, an oil supply pathway 9, a radial direction gap δ1, and an oil drainage opening 10. In the inner peripheral surface of the spacer 7, a recessed part 11 that faces the inner ring peripheral groove 8 and which collects lubricating oil supplied from the oil supply pathway 9 and repelled at the inner ring peripheral groove 8 is provided. <P>COPYRIGHT: (C)2013,JPO&INPIT |
