He shows there are two systems:
 1. Ball Bearings in cage or loose
 2. Cartridge

5:45 Has a cut away diagram of cartridge bearing. He says they are cup and cone, with the outside being the cup and the inside, the cone
 9:00 He explains how caged bearing should be positioned balls up, such that balls ride on the cup, and the cone sticks down the center such that it also contacts the cage directly. All the stuff I previously read in ChatGPT is wrong - the cartridge does NOT take any load, or flex,it is not between balls and cone.

Review: It doesn't matter what type of bearings it has, that will be obvious whwn you take it apart.