To provide a bearing lubricating device which can exactly exhaust lubricating oil supplied to a bearing by a low cost constitution, and suitably adjust the amount of lubricating oil in the bearing.

In an outer ring 5, four pairs of suction holes 11a penetrated from a peripheral surface in radial direction to an inner circumferential surface are arranged at a space of 90 in the circumferential direction. Here, the suction hole 11a is formed so that it may be opened at a location in front of a retainer 7 and outside of a rocking range of the retainer 7 in a guide surface 10. Furthermore, a lubricating oil absorbing means is connected to the suction hole 11a, and the lubricating oil between the guide surface 10 and the retainer 7 is absorbed through the suction hole 11a.