| 摘要 |
<p>An amount of undulation by which the inner surface 11 of a large-diameter-side flange portion 8 formed in an inner ring 5 is undulated is defined as an axial deflection delta . And, the composite roughness of a contact portion between the inner surface 11 and the head portion 10 of a tapered roller 6 is expressed as sigma . A tapered roller bearing 1 is structured in such a manner that delta≤8 mu m and sigma≤0.22 mu mRMS, or, delta≤12 mu m and sigma≤0.18 mu , or, delta≤16 mu m and sigma≤0.13 mu mRMS can be satisfied. <IMAGE></p> |
