| 摘要 |
PROBLEM TO BE SOLVED: To provide a CPU-cooling fan motor bearing achieving the compactness of a device and cost reduction and meeting the need for silentness by replacing double row rolling bearings with one rolling bearing through the use of a rolling bearing with high moment rigidity. SOLUTION: The rolling bearing includes a pair of bearing washers 1 and 2 each having two raceway surfaces each with a radius of curvature greater than the radius of a roller, and a plurality of rollers 5 arranged in an alternate, intersecting relationship on a circumference and each having an outside diameter serving as a rolling contact surface having a curvature also in the axial direction, with the outside diameter always in contact with the raceway surface of one of the opposite bearing washers at one point and with the raceway surface of the other of the bearing washers at another point, so that the outside diameter makes contact with the surfaces at a total of two points. Therefore, the bearing has high moment rigidity and a rotor can be supported by one bearing.
|
