Rolling mill for rolling or sizing metal pipes

A rolling mill for rolling or sizing of metallic pipes, bars and wires, comprising a plurality of rolling units which are arranged on a straight line close to one another and cart be exchanged in total, partly or individually, each of the rolling units having at least three rolls which are arranged in a star-like configuration around a rolling mill axis;

• drive shafts and motors each driving a respective one of said rolls in all said rolling units;
• each rolling unit comprising a rolling unit housing;
• roll bearings provided for said rolls, whereby the roll bearings of at least one roll in unit are arranged in eccentric bushings of said rolls, which bushings of said rolls are fixedly arranged with respect to lateral movements in said rolling unit housing;
• and multi-part roll shafts provided for supporting said rolls so that said rolls can be exchanged without dismounting of said rolling unit housing and said roll bearings.