Roll assembly for use in rolling a wire rod

摘要

A roll assembly for use in rolling a wire rod includes an arbor which has a slightly tapered periphery at the middle portion thereof, a liquid pressure applying channel provided in the arbor extending to the tapered periphery, a cemented carbide sleeve securely fitted about the tapered periphery, opposing tightening means securely holding the sleeve by constricting it at around both ends, and a roll neck bearing mounted around each end portion of the arbor. For assembling the roll assembly, liquid pressure is applied through the channel provided in the arbor so as to form a liquid layer between the sleeve and tapered periphery of the arbor.