Jump to content
Ultimaker Community of 3D Printing Experts

Wobbling printer head fixed in 5 minutes?


Recommended Posts

Posted (edited) · Wobbling printer head fixed in 5 minutes?

Yesterday, I replaced the linear bearings in my old Ultimaker "Classic", one

of the first beta machines. That was badly needed.

Well, after 2..3 hours of dis- and reassembling everything, accompanied by

several loud curses, as well as general swearing, the moment of truth:

Y axis ok, Y still wobbling exactly as before :-/

Ok, maybe just bad luck. Buy 10 bearings to find the one that's good.

And actually, all my UM2s proved that theory. Most of them came with

wobbling heads, straight from factory. Others, like one of my Go machines,

in daily use for about a 3/4 year, are still perfect.

But today, a new thought came to my mind:

Does the angle of fitting that part probably play a role here?

Can it be fixed by rotating the linear bearing?

To find out, I quickly designed a little "bearing pusher"

IMG_4115_sml.thumb.jpg.9ad2d0fedc361688dadd5271c443412f.jpg

IMG_4116_sml.thumb.jpg.d2f47d51fb4d6d86fac94fbd6225a1da.jpg

And _carefully_ rotated the bearing with pliers.

IMG_4117_sml.thumb.jpg.72b2914ae4d5b920e2d01a979979d03d.jpg

Bingo! As if it's a new machine.

Well, er, okay, those parts actually were new, so I tried the same with

an UM2, without replacing anything - and yep, same result...

No wobbling.

So as it seems, we have a quite good chance of fixing a wobbling

printer head, by doing nothing else but rotating the linear bearings.

\o/

===

BTW.:

Is that forum design a bug or a feature?

IMG_4115_sml.thumb.jpg.9ad2d0fedc361688dadd5271c443412f.jpg

IMG_4116_sml.thumb.jpg.d2f47d51fb4d6d86fac94fbd6225a1da.jpg

IMG_4117_sml.thumb.jpg.72b2914ae4d5b920e2d01a979979d03d.jpg

Edited by Guest
  • Like 1
Link to post
Share on other sites
Posted · Wobbling printer head fixed in 5 minutes?

@Didierklein once mentioned that the linear bearings are meant to be aligned so the ball bearing races are X shaped not + shaped. This will help with the loading applied to the bearing.

 

Yes! It's something i was told at the Ultimaker HQ during a training, the linear bearings have four lines of balls. It's advised to put these lines in an X shape rather than + (from the point of view of the buildplate.

  • Like 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • 16 Visiting our virtual showroom

    1. 1. Have you visited our virtual showroom before?


      • Yes
      • No
    2. 2. If yes - what content did you find most interesting?


      • Information about Ultimaker ecosystem
      • Applications & application stories
      • Customer success stories
      • Webinar sessions
      • Material wall & ecosystem partners
      • New product introduction; software subscription plans
    3. 3. What of the below would make you consider visiting (again)?


      • New Live Ultimaker Webinar streams
      • ‘Ask Me Anything’ with industry experts or Ultimaker staff via main stage and public chat
      • New customer success stories
      • New applications
      • Presentations/news from ecosystem partners
      • Opportunity to meet representatives for an interactive tour
      • Helpful videos like Software tutorials
      • Other; leave input in a comment below!

  • Our picks

    • Ultimaker turns 10: A look back
      Ultimaker is turning 10 years old and that means it is story telling time! We'll explore 2010-2014, traveling through the evolution of the business from the Protobox and Ultimaker Original, to the major leaps forward with the Ultimaker 2 and Ultimaker 3.
        • Like
      • 0 replies
    • Ultimaker Transformation Summit
      Visit our virtual showroom and learn more about the Ultimaker ecosystem!
      • 14 replies
    • New here? Register your Ultimaker for free 3D printer onboarding course
      Hi,
       
      Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
      Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
      They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
      Ready? Register your product here in just 60 seconds.
        • Like
      • 0 replies
×
×
  • Create New...