Listen to the white @Printrbot simple metal: When the Y-axis gets moved there is a clicking noise. I guess the linear bearings are damaged. Any other ideas?
Besides that, the couple prints like a charm. 
Tomorrow I will post some pictures and a short report.
Thanks @Manuel_Meister for the movie!
Definitely sounds like some kind of bearing, either the linear ones or the radial bearings in the stepper.
By the way, pushing the axes around without having a power supply connected is not recommended, as the voltage generated by the motor can damage your electronics. I once managed to fry a Sanguinololu like that.
@Thomas_Sanladerer Oh, then I’ll better stop doing such things. Thanks!
Tomorrow I’ll disengage the stepper and check, whether the noise disappears or not.
This actually gives me an idea: I wonder if the edge surface of the printrbot metal frame with a set of 3 roller bearings would be sufficient enough to get rid of the linear bearings + smooth rods.
@ThantiK the powder coating on the PBSM has a farily rough surface, so i’m not sure that would work well.
@enhydra if it’s one of the linear bearings, a bit of lubrication (not WD40, but a heavy lithium grease) might already fix it for you. To really get the grease in there, i’d recommend removing the smooth rods and pushing the grease into the bearing.
Is be happy to replace any bad bearings!
Brook
I have heard that sound on one of my printers before. I never did determine exactly where it was coming from but it never seemed to affect anything. The prints are still fine.
@Wayne_Friedt So was mine, but it sounds horrible.
X bearings are easy to replace, but y bearings are more involved, requiring a press and a precisely sized pusher-outer (technical term). Fill out a ticket to report bad bearings on a new assembled bot within the warrantee period. I will defer to our excellent support folks.
Brook
@Brook_Drumm Thank you for your reply. I going to grease them first.
@enhydra
I had the same problem. I was out of warranty and wasn’t going to buy a whole aluminum block. The bearings knock out pretty easy. After the replacement and putting it back together it was doing the same thing.
I then noticed loosening the screws holding the aluminum blocks helped. So I started flipping blocks and rods and finally got them sliding smooth. So it might be and alignment issue not bearings.
Good word!
@David_Worth1 Hej, you made my day! I just removed the “cover”, loosened the screws you mentioned and then reassembled everything. That’s it. Thanks
