Abstract: Provided are a plurality of hydraulic cylinders including drive side shift cylinders and work side shift cylinders all configured so as to apply force in an axial direction to a top work roll. The position of the top work roll in the axial direction is held by the drive side shift cylinders and the work side shift cylinders being moved in respective axial directions. The hydraulic circuit is configured such that, after the hydraulic circuit holds the position of the top work roll in the axial direction, in a case where the hydraulic cylinders from between the drive side shift cylinders or between the work side shift cylinders are put, by external force acting upon the top work roll, into a state in which the one hydraulic cylinder applies force in the axial direction to the top work roll, the other hydraulic cylinders are moved in the opposite direction.

Abstract: Provided are: an upper work roll, radial bearings and a thrust bearing provided on a work side and a drive side of the upper work roll and supporting the upper work roll. Shift cylinders are provided on the work side of the upper work roll and apply forces in both a work side direction and a drive side direction to the thrust bearing. Shift cylinders are also provided on the drive side of the upper work roll and apply forces in both the work side direction and the drive side direction to the radial bearing 790B. The shift cylinders each apply a force in the same direction to the radial bearing and the thrust bearing when the upper work roll does not shift in an axial direction at least during rolling.

Abstract: Provided are: an upper work roll, radial bearings and a thrust bearing provided on a work side and a drive side of the upper work roll and supporting the upper work roll. Shift cylinders are provided on the work side of the upper work roll and apply forces in both a work side direction and a drive side direction to the thrust bearing. Shift cylinders are also provided on the drive side of the upper work roll and apply forces in both the work side direction and the drive side direction to the radial bearing 790B. The shift cylinders each apply a force in the same direction to the radial bearing and the thrust bearing when the upper work roll does not shift in an axial direction at least during rolling.

Abstract: A half bearing has a concave portion, a concave portion, and a concave portion penetrating from the outer circumferential surface to the inner circumferential surface, and the washer has a convex portion, a convex portion, and a convex portion on the inner circumferential surface side. The washer is moved to the outer circumferential surface side of the half bearing in a bent state, the convex portion is inserted into the concave portion, the convex portion is aligned with the position of the concave portion, and the convex portion is aligned with the position of the convex portion. Next, when the half bearing returns to its shape before being bent, the convex portion is accommodated in the concave portion, and the convex portion is also accommodated in the concave portion.

Abstract: A half bearing has a concave portion, a concave portion, and a concave portion penetrating from the outer circumferential surface to the inner circumferential surface, and the washer has a convex portion, a convex portion, and a convex portion on the inner circumferential surface side. The washer is moved to the outer circumferential surface side of the half bearing in a bent state, the convex portion is inserted into the concave portion, the convex portion is aligned with the position of the concave portion, and the convex portion is aligned with the position of the convex portion. Next, when the half bearing returns to its shape before being bent, the convex portion is accommodated in the concave portion, and the convex portion is also accommodated in the concave portion.

Abstract: A product includes a product body, a metallic plating layer and a resin layer. The product body is a rod-like member mainly including a metallic material. The metallic plating layer has a metallic luster on its surface and covers an exterior surface of the product body. The resin layer includes a thermosetting resin and an adhesive component and is adhered to the surface of the metallic plating layer, permitting the metallic plating layer to be seen through the resin layer.