| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing capable of receiving radial load, axial load in both directions, and moment load and satisfying high moment rigidity. SOLUTION: The rolling bearing is comprised of an outer ring and inner ring respectively, having a raceway groove consisted of two raceway surfaces that have a radius greater than the radius of a rolling body, and a plurality of the rolling body, in which the outer diameter to be turned to a rolling contact face is given a curvature in the axial direction. The rolling bodies are alternately assembled in a crossed state, and the outer diameter of each rolling body is also brought into contact with one of the raceway surfaces of the outer ring and one of the raceway surfaces of the inner ring always facing each other in a two-point contact state. The rolling bearing has both a low torque for a four-point contact ball bearing and high moment rigidity of a crossed roller bearing, by setting negative the bearing with the internal clearance in a pre-loaded state.
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