Thrust bearing
Simple bearing with tapered rollers for axial load.
The rollers work best when made in a "spiral vase" mode with the maximum possible wall thickness.
(even better if with a wide nozzle, e.g., 0.8mm)
It supports at least 70 kg.
It can be scaled to any size.
It can be improved by placing a 1mm metal wire shaft in each roller so that they do not touch the cage.