ROLLING BEARING DEVICE WITH LUBRICANT SUPPLY MECHANISM

PROBLEM TO BE SOLVED: To provide a rolling bearing with a lubricant supply mechanism capable of high speed rotation of the bearing, by simplifying a lubricant supply structure, by enabling sufficient securement of a lambda value of the lubricant of a bearing guide surface when operating the bearing and easily introducing a lubricant by jet lubrication.SOLUTION: A rolling bearing with a lubricant supply mechanism includes a rolling bearing having an inner ring, an outer ring, a plurality of rolling elements existing between the inner ring and the outer ring and relatively rotating the inner ring and the outer ring, and a retainer for holding the plurality of rolling elements at an equal distance and guided by the inner ring, and includes the lubricant supply mechanism adjacent to an end surface in the rolling bearing axial direction and provided with an injection nozzle for supplying the lubricant to the rolling bearing, and is constituted so that a receiving space is arranged by forming the whole area unopposed to the retainer as a chamfering part in an inner peripheral surface on the side adjacent to the lubricant supply mechanism of the inner ring, and the receiving space is positioned on an injection line of the injection nozzle.