Abstract: A thrust bearing assembly for supporting a rotating shaft, for example, in a multiscrew extruder, having a support, two rows of coaxially arranged bearing elements in cooperating pairs forming a line of bearings in tandem, the elements in one row rotating with the shaft and those of the other row being stationary with the support, means for axially adjusting the elements of one of the forementioned rows for equally distributing axial thrust on the bearing which adjusting means includes a plurality of tilt means which are biased by at least two of the adjustable bearing elements.