The ubolts on the bed are more likely to cause you problems by over tightening than any other part on the machine.
Bearing repack zip#
If youre using the polymer bearings then the zip ties need to be tightened carefully to not warp the bearings. You stand a higher risk of introducing problems by over tightening the m3 screws and ripping the nuts out than the zip ties will ever cause you. Theyre nylon, and stronger than the petg/abs the parts are made from (unless youve printed them in nylon). The zip ties are perfectly fine for holding the bearings. Meaning the carriage shouldn't rotate when moving side to side. Misumi makes a longer version of the lm8uu its 50% longer if my memory serves me correctly (don't quote me) which would give a similar effect by widening the contact area on the upper rod creating a triangular area for the forces to distribute. Its why you dont see people using bi-pods, but tri-pods.Ī three legged table wil never rock no mater the surface its placed on (being level is a different story, but it is stable) Three points of contact are sturdier than two. Know how triangles work to make things stable? Two deep scratches on the top X-axis linear rod
I just want to do it proper since I have to teardown "half" the printer anyway. NOTE: I do think that I am just unlucky with the bearing malfunctioning and don't really blame the "factory" lubrication. Should I, when the replacement bearings arrive repack the bearings using the above guide? What are you guys thoughts about it? Which should arrive on friday (Prusa support is great!). Without any questions (just had to send them the following image) they shipped me a replacement rod and two bearings.
Now, a couple of weeks later I noticed another scratch at the same position and contacted support again. They told me to rotate the rod slightly to see if it was caused by improper lubrication (dry bearings) or a malfunctioning bearing. Upon inspection I noticed a deep scratch along the top X-axis and contacted Prusa Support.
Bearing repack manual#
I decided not to do so since I read some mixed comments about it and the manual state's that it is not needed.Ī couple of months later, my printer ran 100 hour and I knew it was time for it's first maintenance. I have done some research prior to assembling and read the some people where recommending to repack the bearing prior to installing ( ). So, around three months ago I received my Prusa MK3/S kit and assembled the kit per prusa's instruction.
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