To provide a bearing device for back up rolls, wherein the torque is small, the life of a bearing is long and it stands up to the use for a long period.

A roller 24 with a holder for loading radial load, wherein a plurality of rollers 23 are held with a holder 24a is interposed between a tubular roll 13 and a shaft 12. By bringing the side face of the holder 24a of the roller 24 with the holder into contact with an annular component 16 which is provided on the surface of the inside diameter of the roll 13, the movement in the axial direction of the roller 24 with the retainer is restricted. An annular recessed part 16a for avoiding mutual contact is provided on either or both of the side face coming in contact with the holder 24a of the roller 24 with the holder in the annular parts 16 and the side face coming in contact with the annular component 16 of the holder 24a.