Jump to content

Recommended Posts

Posted · replacement belts

I am trying to find replacement belts for my machine, theses took a beating playing with tensioners and slipping here and there in the past.

Everyone posts "Just look for 240mxl .25 and 80mxl .25 belts"

If you go to a site like this company near my house... there is all kinds of info missing in the above statement.

http://catalog.bbman.com/db/service?domain=bbman&command=locate&category=timing_belts

I am assuming the 240mxl is metric like eveything else on the machine. The english units only have 19.2" long belts which is too short.

What tooth style am I looking for?

What is the pitch length I am looking for?

Assuming 6.4mm in width.

thanks!

Chuck

  • Link to post
    Share on other sites

    Posted · replacement belts

    I've got one of the first available Ultimakers from last year so maybe the belts have changed since then, but mine appear to be marked 100MXL and 300MXL.

    Looking at your link, the 100MXL is 8.00" and the 300MXL is 24.00".

    MXL is the tooth style

    .25" is the width (or 6.4mm if you choose)

    240 is the number of teeth which will give you a 19.2" pitch length

    80 is the number of teeth which will give you a 6.4" pitch length

    Both of which seem too short for my machine.

    What are your stock belts marked as?

    Dave

  • Link to post
    Share on other sites

    Posted · replacement belts

    That is the thing that is making me doubt myself. My belts on my machine are clearly marked 240mxl but are the length of a 300MXL belts. I picked up a replacement 240mxl and it is indeed too short.

    I'll try ordering some 300mxl but that still doesn't explain why mine say 240mxl unless there is another factor I don't understand with these.

  • Link to post
    Share on other sites

    • 1 month later...
    Posted · replacement belts

    On my brand new um the belts are B300mxl, the are quite loose and maybe a shorter belt would be eay better. Not easy to find, anyway, in ye olde europe...

    Very sad, a 2000$ machine running on clothes spring as belt tensioners.... :(

    If ainbody know where to buy mxl belts , please post the link

  • Link to post
    Share on other sites

    Posted · replacement belts

    If you are in the UK, you can get MXL belts from http://www.beltingonline.com/mxl-pitch-rubber-timing-belts-4580 you can spec the width of belt you require, i have used them a couple of times and they ship within a few days and the price's are good so you could order a few spares.

    I am guessing the 300 on the ultimaker belt is the amount of teeth, so the 2384-MXL could be the right option as this would be about a 4mm shorter belt ?.

  • Link to post
    Share on other sites

    Posted · replacement belts
    On my brand new um the belts are B300mxl, the are quite loose and maybe a shorter belt would be eay better. Not easy to find, anyway, in ye olde europe...

    Very sad, a 2000$ machine running on clothes spring as belt tensioners.... :(

    If ainbody know where to buy mxl belts , please post the link

    I always say: "Better loose belts than problematic belts". My first machine was a BfB, and their way of tightening the belt was to actually cut the belt in half, and then try to squeeze it through 2 blocks to keep it together. If you tried to do this using your hands, it would get loose during printing and ruin the print. The onliest way it would work was to have someone with pliers holding it tight, and another person who screwed it so hard that it almost cracked the plastic. The Z tensioner was actually a huge belt that you had to push through a belt tensioner, and if that belt came loose, everything would start slipping...

    The belts should work properly if you follow the instructions properly, if you dont then you will end up with loose belts. I am using an Ultimaker and never had to use a belt tensioner at all...

  • Link to post
    Share on other sites

    Posted · replacement belts

    Every participant in our last Ultimaker workshop had loose belts. There is no way you can explain that by saying they all did not follow instructions. If the belts are a different length than designed, then there is little you can do but improvise.

    It seems there is no quality control procedure yet at UM for belt-length.

  • 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

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...