| 摘要 |
<p>A rolling bearing unit with a rotational speed sensor comprising a tone wheel 13a having a smaller cylindrical portion 15a fitted onto the fitting cylindrical face portion 23 in the middle portion of the inner ring 1 which is formed such that as the moment load is larger toward the flange 2a for the vehicle wheel, the cross sectional area of the inner ring 1 is larger toward the flange 2a.</p> |
