Retrofit method and apparatus for rolling mills

摘要

An apparatus and method are provided for retrofitting a hydraulic roll actuating mechanism in a screw down rolling mill. A hydraulic cylinder is fitted to the mill frame in the situs of the original screw down mechanism, and an externally threaded piston rod sleeve which coaxially extends from the hydraulic cylinder and receives the piston rod is disposed within the frame opening which originally accommodated the screw member. The piston rod sleeve is threadedly engaged with the original screw nut carried by the frame for purposes of transmitting reaction forces to the frame.