Jump to content

Short Belt Adjustments


chrisp

Recommended Posts

Posted · Short Belt Adjustments

I spent a little time looking for a previous post on how to adjust the tension of the short belts on an Ultimaker 2. I couldn't find anything.

The short belt located on the back-right side of my UM2 is loose. I decided to check it after noticing that my circular holes in my prints are a little oval and not so round.

Can anyone point me in the right direction or explain to me the best way to go about tightening up this short belt? Or is there another option to adjusting settings in Cura or through the control panel?

 

  • Link to post
    Share on other sites

    Posted · Short Belt Adjustments

    There's the possibility to (ab)use an idler pulley bearing: You could mount one in a way that it scretches the timing belt, though there's probably very little space. I don't know the UM2 in detail, you can probably see better whether that would work or not.

    Idler pulley bearings come in various sizes, maybe you can just put a small one in the middle between the pulleys, and then slide it out of center so that the timing belt will form a triangle.

    Then you could go all engineery and mount the idler pulley with a spring, controlling the belt tension nicely :)

     

  • Link to post
    Share on other sites

    Posted · Short Belt Adjustments

    I spent a little time looking for a previous post on how to adjust the tension of the short belts on an Ultimaker 2. I couldn't find anything.

    The short belt located on the back-right side of my UM2 is loose. I decided to check it after noticing that my circular holes in my prints are a little oval and not so round.

    Can anyone point me in the right direction or explain to me the best way to go about tightening up this short belt? Or is there another option to adjusting settings in Cura or through the control panel?

     

    That might have happened because the screws of the stepper motor got loose. On the back side of the UM2 you see the four screws going to the stepper motor. Open them slight, push the stepper motor down and tighten the screws again.

    I had an issue with the pulley of the left stepper motor and realized that the screws were not tightened too strong.

    This issue was described in this post:

    http://umforum.ultimaker.com/index.php?/topic/4171-ultimaker2-axis-squeeknoise-solved/

     

  • Link to post
    Share on other sites

    Posted · Short Belt Adjustments

    The X and Y steppers should be mounted in slotted holes so that the stepper can slide up and down a small amount. Like sigi says: loosen the 4 screws, slide down the motor so the belt is very tight and then tighten the 4 screws. If this isn't enough you need to lengthen the slots with a hand drill and router bit.

     

  • Link to post
    Share on other sites

    Posted · Short Belt Adjustments

    Thanks for the ideas guys, but the holes either have to be drilled out more, or I need to replace the belt. The easy way did not work.

  • Link to post
    Share on other sites

    Posted · Short Belt Adjustments

    Get a router bit at your local hardware store. One that is the same diameter as the existing slot.

     

  • Link to post
    Share on other sites

    Posted · Short Belt Adjustments

    I have the necessary tools, just didn't want to go that route to fix it.

    At any rate.....thanks for the ideas.

  • 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
    • Our picks

      • Introducing Universal Cura Projects in the UltiMaker Cura 5.7 beta
        Strap in for the first Cura release of 2024! This 5.7 beta release brings new material profiles as well as cloud printing for Method series printers, and introduces a powerful new way of sharing print settings using printer-agnostic project files! Also, if you want to download the cute dinosaur card holder featured below, it was specially designed for this release and can be found on Thingiverse! 
          • Like
        • 10 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...