| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rolling bearing in which grease and oil to be flicked to others than a lubricating part by high-speed centrifugal force can stay on the inner diameter face of a cage, thus enabling the supply of the grease and base oil of the grease to balls and rings over a long period to significantly improve a lubrication life.SOLUTION: The rolling bearing includes: an inner ring having a raceway surface; an outer ring having a raceway surface; a plurality of rolling elements rollably arranged between the raceway surface of the inner ring and the raceway surface of the outer ring, and having rolling surfaces facing the raceway surface of the inner ring and the raceway surface of the outer ring; and an annular cage for rollably holding the rolling elements in pockets. A protrusion is provided at the edge of the inner peripheral face of the cage.</p> |
