| abstract |
[PROBLEMS] To provide a rolling device having improved durability while maintaining good lubricity while suppressing occurrence of separation in a bearing or the like, and an air compressor and a turbocharger using the rolling device. An outer member having an inner member having a raceway surface on an outer surface and a raceway surface facing the raceway surface of the inner member is disposed on the outer side of the inner member. 4 and a plurality of rolling elements 5 disposed so as to be freely rollable between both the raceway surfaces, and a grease composition containing an ionic fluid as a base oil is enclosed. [Selection] Figure 1 |