| 摘要 |
PROBLEM TO BE SOLVED: To generate friction on the contact part of flange faces with the end faces of a rolling body so as to damp the vibration when bearing vibration such as radial vibration is generated by setting at least either surface roughness of the flange faces or the end faces of the rolling body contacted with the flanges in the specific range of roughness against the roughness of inner/outer ring raceway surfaces and the rolling face of the rolling body. SOLUTION: In a rolling bearing 2, at least either surface roughness of flange faces 4a or the end faces 5a of a rolling body 5 contacted with the flanges satisfy the following relation against the roughness of inner/outer ring raceway surfaces 3R, 4R and the rolling face 5b of the rolling body 5. 2(σ1 <2> +σ2 <2> )<1/2> (σ3 <2> +σ4 <2> )<1/2> 4(σ1 <2> +σ22 )<1/2> whereσ1 : inner/outer ring raceway surface roughness (centerline mean roughness)σ2 : raceway surface roughness of a rolling body,σ3 : inner/outer ring flange part roughness,σ4 : rolling body end face surface roughness.
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