Patent ID: 8376623

Claim:
A bearing lubricating structure for a rotating shaft, comprising: a pair of bearings that are disposed spaced-apart in an axial direction within a support case, for rotatably supporting the predetermined rotating shaft around an axis thereof; and an oil supply port that is disposed on the support case, for supplying lubricating oil to between the pair of bearings; between the pair of bearings and between the oil supply port and the rotating shaft, a separator being disposed in the axial direction, having an oil receiving portion in a predetermined angular range of the separator around the axis of the rotating shaft for receiving the lubricating oil supplied from the oil supply port so as to prevent the lubricating oil from directly adhering to the rotating shaft, the separator being integrally fixed to the support case, and a pair of sidewalls confronting the pair of bearings and projecting from axially opposite ends of the oil receiving portion and toward an inner circumferential surface of the support case to be in intimate contact with the inner circumferential surface, so that an oil reservoir is formed between the oil receiving portion, the pair of sidewalls and the inner circumferential surface, and the pair of sidewalls each including a communication hole that permits the lubricating oil supplied from the oil supply port to the oil reservoir to flow toward the pair of bearings at a predetermined flow rate.