I am running a tool-path that requires a lot of z axis movement and I am starting to get slipping while it is moving upwards (I hear a quick grinding noise and the router stops moving). I am not sure if the grinding is from the band slipping on the pulley (sounds too loud for that) or if something else is slipping like the lead screw. All of this is causing the machine to lose tracking on its position (it thinks it went up so many inches but in reality it did not).
I did notice that the flange bearing in the motor plate does not seem to be spinning correctly (honestly not sure if it should be still or moving quicker). Here is a link to a video of the bearing: https://drive.google.com/drive/folders/1YxEOmiAEyrkVvL-mX-_aw2ktqnXoECoK?usp=sharing
Wondering if I just need a new bearing?