| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing capable of receiving a radial load, axial loads in both directions, and a moment load and suppressing a spin sliding between rolling elements and raceway grooves and reducing a torque by lowering a rolling resistance. SOLUTION: A plurality of rolling elements 5 are incorporated between the outer ring 1 and the inner ring 2, the outer ring 1 and the inner ring 2 comprise raceway grooves having raceway surfaces larger in radius than the rolling elements 5, and at least either of the outer ring 1 and inner ring 2 comprises two raceway surfaces. The rolling elements 5 are formed in a ball shape having an outside diameter 5a forming a rolling contact surface with a curvature also in axial direction and having at least one flat surface 5b. The plurality of rolling elements 5 are disposed on a circumference in intersected state, and the outside diameters 5a of the rolling elements always come into contact with the raceway surface of the outer ring 1 and the raceway surface of the inner ring 2 opposed to each other at a total of two points. Only the areas of the rolling elements near the contact part of the rolling surface with the raceway track raceway surface are finished with a specified roughness. |
