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Bearing type for the knurled wheel


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Posted · Bearing type for the knurled wheel

Hi all,


I have an Ultimaker 2 Extended that has been upgraded to the + module (so I have the Ultimaker 2+ feeder on mechanism installed).

But even though the printer only did about 350 hours of printing I noticed that I sometimes had layers with gaps in them. This disappeared when lowering the speed to about 75%.


So I took the feeder mechanism apart to clean it and see if it was all ok, only to find out that one of the bearing that support the knurled wheel had fallen apart.

The cover plate had come of and the little clip that should hold it in place was mangled. 




The problem is, I can't find that bearing sold separately anywhere. Does somebody know a the type of that bearing?

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    Posted · Bearing type for the knurled wheel

    You're supposed to contact your reseller.  Even if they don't list parts on their website, ALL parts are available.


    But if it were me I would just buy that bearing on ebay.  These are standard bearings - you only need to know 3 dimensions, width, inner diameter, outer diameter.  They are almost always integer numbers of mm (for example 3mm, 8mm, 12mm).  So you don't have to measure them super accurately (within 0.5mm should be good enough).



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    Posted · Bearing type for the knurled wheel
    47 minutes ago, ultiarjan said:

    Think it's this one; (ultimaker part 8247).


    The Ultimaker part number is 1974

    It's a "Stainless steel miniature ball bearing 8x12x3.5 mm" to give you a search term.

    Also known as "MR128 ZZ", commonly used on RC-cars.


    Good luck!


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