A bearing device (J) wherein an outer ring spacer (4) and an inner ring spacer (5) respectively are interposed between the outer rings (2) and the inner rings (3) of multiple roller bearings (1) aligned in the axial direction, with the outer rings (2) and the outer ring spacer (4) installed in a housing (6), and the inner rings (3) and the inner ring spacer (5) fitted onto a shaft. The outer ring spacer (4) is provided with multiple nozzles (12) which blow cold air toward the outer circumferential surface of the inner ring spacer (5). For example, multiple rows of the nozzles (12) are provided in the axial direction and the circumferential direction on the outer ring spacer (4).
