| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing which can smoothly discharge air oil supplied into a bearing space to the outside of the bearing when using the bearing having an oil supply hole at an outer ring in combination without using a spacer.SOLUTION: In a rolling bearing, an oil feed hole 5 for air oil lubrication which penetrates a bearing space is formed at an outer ring 2. Air oil discharge notched recesses 9 which are recessed to the inside of the bearing in an axial direction are formed at both width faces of the outer ring 2 over an inside diameter face 2b from an outside diameter face 2c. A circumferential groove 6 communicating with the oil feed hole 5 is formed at the outside diameter face of the outer ring 2, annular grooves 7, 7 are formed at both-side positions of the circumferential groove 6 at the outside diameter face of the outer ring 2, and annular seal members 8 are arranged at the annular grooves 7.SELECTED DRAWING: Figure 1 |
