Building the Prusa i3 MK3; Linear bearings  

RE: Building the Prusa i3 MK3; Linear bearings

Posted by: @eewec-ourbyni

So, I notice from reading the instructions that the linear bearings are used as is. *Scratches head*. Why are we not cleaning the packing oil off these and using actual grease? Even Misumi only ships these with packing oil to stop them corroding.

Lubrication Type	Not Provided

I'm beginning to understand why so many have issues with these wearing out quickly. Anyone know where I can get something like: https://www.thingiverse.com/thing:1128781 before I actually build my kit?

If you use Misumi linear bearings I would follow the manufacturer's instructions:

P1_0303-0304_F04_EN-1

RE: Building the Prusa i3 MK3; Linear bearings

If you are concerned about lubrication before you assemble, the printed cap does make it easy.   The printed cap makes it so easy if you only had a printer....  By the way, there are those who are concerned that the printed caps may deposit pieces of filament into the races of the bearing.  

There are a LOT of opinions on bearings and lube.

There is the 'other' method of lubing the bearing that doesn't require s printer.  Use 2 smooth rods to squish the SuperLube into the bearing.

RE: Building the Prusa i3 MK3; Linear bearings

Huh, that's not something I thought of. It would waste more, but holding the end closed with one rod and then pumping the grease into the other would probably work, though it would probably be fiddly to get things right. Hmm.