Abstract: The present invention concerns a clamping chuck for a cold pilger rolling mill, comprising clamping a sleeve and at least two clamping jaw carriers. The chucks known from the state of the art have a hollow-cylindrical guide sleeve, into which are inserted from the end clamping jaws which are pressed against the tube shell by means of a clamping sleeve which is also to be introduced from the end of the guide sleeve. In comparison with that state of the art the object of the present invention is to provide a clamping chuck for a cold pilger rolling mill, which permits easy changing of the clamping jaw carriers and thus quick and inexpensive adaptation of the cold pilger rolling mill to tubes of differing diameters and wall thicknesses.

Abstract: The state of the art discloses cold rolling mills comprising a roll stand, at least one roll rotatably mounted to the roll stand, a feed clamping saddle for feeding a blank, and a first drive for the feed clamping saddle. Those cold rolling mills have ball spindle drives with a high rate of wear as the drive for the feed clamping saddle. In comparison the object of the present invention is to provide a cold rolling mill whose drive for the feed clamping saddle involves no or only very slight wear and which in addition permits a slow movement of the feed clamping saddle. According to the invention that object is attained by a cold rolling mill which has a direct electromechanical linear drive for the feed clamping saddle.