PURPOSE: To share rough and finish rolling mill and to reduce equipment cost and administrative expense by equipping fitting parts at both shaft end parts of a large diameter work roll in a metallic foil rolling equipment and fitting the fitting part on the large diameter side to a rough rolling mill and the fitting part on the small diameter side to a finish rolling mill.

CONSTITUTION: At both shaft end parts of the large diameter work roll 3 is provided fitting parts 21, 22 into driving spindles 23, 24 to rotate the work roll 3, the fitting part 21 on one large diameter side can be fitted into a driving spindle 23 of the rough rolling mill 1, a fitting part 22 on the other small diameter side can be fitted into a driving spindle 24 of the finish rolling mill 2, the large diameter work roll 3 can be shared with the rough and finish rolling mills without changing the driving spindle and a spindle support, a high speed rolling can be performed by the large diameter work roll when the thickness of the metallic foil in the finish rolling mill is large, the minimum foil thickness obtained by finish rolling of the small diameter work roll can be made further thinner. Further, the number of work rolls can be reduced by sharing the large diameter work roll.