Patent ID: 8646983

Claim:
A rolling bearing comprising: a first raceway member including a first annular raceway surface; a second raceway member including a second annular raceway surface opposing the first raceway surface; a plurality of rolling elements arranged between the first raceway surface and the second raceway surface so as to roll; a guide member formed integrally with or separately from the second raceway surface, the guide member comprising: an annular guide surface arranged at a position different from the second raceway surface in an axial direction; and a flow path in which compressed air for supplying lubricating oil flows; and an annular groove having a substantially trapezoidal cross-section provided in the guide surface in a circumferential direction; the annular groove including: a discharge opening connected to the flow path in a groove bottom part; and an introducing surface, corresponding to a non-parallel side of the substantially trapezoidal cross-section, configured to introduce the compressed air toward the second raceway member in the axial direction; and an annular cage that holds the plurality of rolling elements at given intervals in the circumferential direction and includes a guided surface which opposes the guide surface such that the guided surface can slidably contact the guide surface.