Does a RC Brushless Motor Require Lubrication or Oiling?

Here we look at Lubricating a brushless motor. There are only a few mechanical rotating components inside the brushless motor. One being the rotor of the motor. And the others being the bearings that help support the motor.

The only motor I have that needs new bearings: found in this video:
Are Brushless Motors Water Proof:
https://youtu.be/uNNgn-nsrrU

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Here is the video of Brushless inrunner vs Outrunner:
https://youtu.be/m6TW1WZn9CA

Видео Does a RC Brushless Motor Require Lubrication or Oiling? канала RCexplained