To solve problems such as early exfoliation, galling and abrasion of a bearing in a universal joint.

This universal joint for driving a rolling mill is equipped with a bearing 2, which is disposed at equally-divided positions around an axial line perpendicular to a first or second axial line 20, 35 during transmitting a rotational force from one of axial ends of a first axis 11 and a second axis 12 to the other, and is installed in a way for receiving a transmission rotational force in a radial direction at each of a plurality of cantilevered axial parts 22 at equal distance from the axial lines. The bearing uses a medium thick barrel-shaped roller 3 which is formed by rotating a predetermined arc and tapered at both ends. Inner and outer raceway faces, on which the roller is rolling, are brought into arc line contact with the roller as an indentation groove shape formed by rolling the arc. The radius of the arc is larger than the raceway radius outside the inner and outer raceway faces.