| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing capable of avoiding rise in the temperature of the bearing and increasing allowable rotational frequency of the bearing by improving oil film retention performance between balls and a cage and promoting appropriate inflow-discharge of lubricating oil. <P>SOLUTION: A deep groove ball bearing is provided with: an inner ring 1; an outer ring 2; the plurality of balls 3 rollingly provided between the inner and outer rings 1, 2; and the resin crown-shaped cage 4. The deep groove ball bearing is used in the environment where lubricating oil is supplied from axial one end. A circular part 4a of the crown-shaped cage 4 is arranged to face the supply side of lubricating oil. An oil reservoir plate 5 extended toward a shoulder part 1b of the inner ring 1 while fixed to the outer ring side is arranged on an opening side of a pocket opposite to the circular part 4a. An annular opening part 10 from which lubricating oil is discharged is formed between an inner diameter part of the oil reservoir plate 5 and an outer diameter part of the inner ring 1. <P>COPYRIGHT: (C)2009,JPO&INPIT |
