Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
New build, 2 days old.
Saw lots of issues with crash detection, so I loosened the bearing U bolts below the bed first, and things looked better.
Got halfway through a print and crashed again.
Now the Y axis motor / bearing appears to have completely locked up.
Is this more likely a bearing issue? should I immediately replace those?
Dont get caught up w/ troubleshooting all possible issues here, the print bed legit does not move anymore.
Looking for first responses.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
The motors themselves might not be locked up, the bearings could be deformed and locked.
I have already ordered replacement bearings and I will be going that route.
If anyone has any other suggestions you have my ears.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
Slip the belt off the motor. That isolates the motor and idler from the bearings.
Try to move the print bed. If it moves freely, check the motor and idler.
If it does not move, remove all the U Blots. Try to move the bearings individually.
If you find a bad one - replace it.
You did lube your bearings with a good grease during assembly?
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
@robert-rmm200
I did not grease as the instructions indicated the bearings came lubed. Apparently that is misleading and they should be lubed again, from what I'm seeing from peoples posts here
I also think I tightened the U bolts to much initially. I saw 2 balls from bearings drop out during the assembly. And after the completely assembly I saw another ball on the ground. So i was expecting to have to replace the bearings, was hoping to get a few prints out of the way first.
Ok, I will isolate the motor and see if its the motor itself, or just bearings.
Hoping for just bearings.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
I have greased up the bearings a bit. and I turned off crash detection setting and turned on Stealth setting so it will print slower.
The bearings are moving a lot easier, about halfway through a print now. Wish me luck
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
First print worked pretty great.
Doing the Vase now about an hour in and its looking good so far.
I cant believe greasing a bit and smacking the bearing around a bit actually made this work better.
Probably more to do with greasing and turning off crash detection and turning stealth mode on.
Printer is very quiet.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
now it's working, try crash detection back on and normal mode...
should be ok...
did you lube all axis or just the one you were having trouble with?
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
Just the axis i was having issues with (Y). About halfway through a print right now and its looking pretty good.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
You don't need to replace all the bearings - just the bad ones.
Any bearing that lost a ball is a bad one.
Not a bad writeup is:
https://prusacommunity.com/set-your-bearing-straight/
LM8UU bearings are about the most common there are. You can probably buy from PrintedSolid or Amazon cheaper than the shipping from Prusa. Just get well rated ones, or from a trusted supplier. Cheapest bearings are awful.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
I found some off amazon with good reviews with the MK3S.
I will investigate this much more before replacing the bearings.
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
I would Lube the other axis, before they give problems...
Just depends how luck you are feeling!
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: Began with Y-Axis Failures during prints + Crash Detection -- Now Y-Axis Motors are locked up completely and take lots of effort to move
Don't lube the threaded rods. Trapezoidal nuts are Delrin and need no lubrication. Tends to dissolve them.
No point using oil on the Z smooth rods - it just runs off.
Never oil any of the rods except for a test. Useful for identifying a lubrication problem though.