Roll stand

In a roll stand for a pair of work rolls, the roll stand comprising a base plate, a housing with two side walls mounted on the base plate, the housing having a top, the side walls having guide surfaces and defining therebetween a cube-shaped receiving space which is open toward the top and toward two sides for an insertable roll cassette, the work rolls having axes, the roll cassette comprising two side plates which extend parallel to each other and are spaced at a distance from the roll axes, the side plates having outer sides, the outer sides of the side plates being guided by the guide surfaces of the side walls, the side plates comprising guide means for two pairs of chocks for receiving the work rolls and bearings of the rolls, the improvement comprising pairs of adjusting spindles which absorb rolling forces for connecting a pair each of interacting chocks, wherein a distance between chocks is adjustable so as to produce preadjustable passes, the adjusting spindles comprising adjusting collars and the side plates having adjusting pieces compatible with the adjusting collars, the adjusting collars and the adjusting pieces being in engagement with each other and serving to secure the adjusting spindles in axial direction to a roll center, and spacer members extending transversely of the side plates for connecting the side plates to each other, such that a rigid cassette is formed by the spacer members and the side plates, wherein the adjusting spindles have upper ends projecting above upper chocks, the upper ends comprising coupling claws, a synchronous gear unit being mounted on and bridging over the side walls, the synchronous gear unit comprising four driven shafts which and are arranged in pairs, wherein the shafts of each pair rotate in opposite directions, the driven shafts comprising coupling heads for a positively locking engagement in the coupling claws of the upper ends of the adjusting spindles, and wherein the side walls have at openings thereof means for mounting preassembleable elements.