| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lubricating device for a rolling bearing enabling high speed rotation by sufficiently discharging lubricating oil to prevent increase in stirring resistance, and by suppressing temperature rise in the bearing. <P>SOLUTION: A plurality of rolling bearings BR is axially arranged and disposed. Each rolling bearing BR is provided with an inner ring extension 6 that extends in the axial direction, at an inner ring 1, is provided with a spacer 7 that is adjacent to an outer ring 2 and of which the inner peripheral surface faces the inner ring extension part 6, and is provided with an oil supply/drainage mechanism KU that supplies lubricating oil serving also as a bearing cooling medium over the inner ring extension part 6 and the spacer 7 into a bearing space S1 in each rolling bearing, and discharges lubricating oil to the outside the bearing. Of the respective rolling bearing devices BR, on an end surface of the spacer 7 in a rolling bearing BR disposed adjacently with respect to end surfaces of the inner and outer rings on a reverse side in the axial direction with the inner ring extension part 6, an oil groove 12 is provided that is communicated with the bearing space S1 in the adjacent rolling bearing and discharges lubricating oil in the bearing. <P>COPYRIGHT: (C)2013,JPO&INPIT |
