LM8UU - Greasing Help

The creator assumes no responsibility for any damage or accuracy that may occur. All work is carried out at your own risk. This guide is not a recommendation but only describes how the author uses the process for himself.

My process was modified from the following instructions:

Process for greasing bearings:

1. Degrease the bearings in isopropanol
   
   To degrease bearing please use Isopropanol 99% or 70%. And bath the bearings for max. 20 minutes in it:
   
   For easy degreasing you can use this tool:
   https://www.printables.com/de/model/53065-holder-for-10x-bearings-lm8u-made-for-prusa
   
   
   
    
2. Dry the bearings on a paper towel:
   
   
   
    
3.  Plug the bearing on the greasing Help
   
   
   
    
4. Take your grease and fill the bearing:
   (each → ca. two pea-sized drops)
   
   
    
5. Press in slowly one of the rods
   Excess grease will push up out on the top of the bearing. If there is no fat coming out and you do not feel any resistance, put in additional grease again (repeat this until as you have reached the effect). After that remove the rod (be careful and work slowly and soft)
   
   
    
6. Clean bearing with paper towel to remove excess grease
   It is normal das excess grease will be left on the bearing. You can remove it with a paper towel. Check if the bearing is greased. Shake it a little bit. If you do not hear any balls inside rattle while shaking, the grease was pressed in correctly.
   
    
7. Conditioning of the bearings
   Now the bearing is full of grease, if you would build in the new bearings the balls inside would stuck or in most case not start moving. We have to do some finals steps to conditioning the bearings.
   
   For that take the rod again and press the bearings on each side very soft against the rod and move the bearing on the rod. You will feel how the balls will moving inside the bearing. Further excess grease will come out of the bearing. If the bearing have a nice smooth moving behaviour its perfect.
   
   
   
   Clean the bearing last time with a paper towel and remove the excessed grease.
   
   Now it is ready for the final assembly!