Liebherr LTM 1030-2

[JensR]

I don't really think anymore that the ones Ken found are too bulky. The lower part will sit flush in the chassis and the upper needs to bridge the thickness of the gear and then the crane needs to be attached to it. If anything, that hollow shaft of the bearing unit might not be long enough...

A very simple and compact thrust bearing is a plastic disc with many 4mm holes drilled in a circle. Put bearing balls into the holes and trap everything between two planar disks of sheet metal. Does not provide radial location of the shaft, but a huge support base axially.