Simplified Caged Ball Bearing

by blecheimer, published

Simplified Caged Ball Bearing by blecheimer Mar 8, 2013


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Due to the recent incidents (things appearing on ebay) I just want to make something very clear:
I do not allow any commercial use of my STL-files, my designs and my photos!

Oh no, not again another ball bearing...

Sorry, but I just have to show my final design. jonathanw's comment on my last ball bearing ( http://www.thingiverse.com/thing:57762 ) gave me new ideas. I reduced the bearing to three parts. The inner ring is now made of one piece and need not to be snapped together.

Unfortunately the assembly is a little bit more complicated. I made a simple assembly tool that makes things easier. Take a look at this video for the assembly sequence:


As requested I added another assembly tool (roud support).


Thanks jonathanw for leading me to a new idea!


  • Print all parts (layer height schould be 0.1mm)
  • Assemble like seen in the video
  • Rock 'n Roll

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I have a suggestion: the "C" piece that is used to hold the balls in place before putting the cage on, the balls fall of mine. can you make another one that is an "O"?

Sure, just give me a day or two.

Give the round support a try and see if it works for you.

Typo: "Schould" should be "Should"

can you post your source file so i can resize the bearing od and id?


I uploaded a STP-file. I hope this will help you.

I wanted to say thanks, for the best ball bearing I found on thingiverse!

Thanks for your comment. :)

I needed to scale the inner part at 104% to have a good fit (no wobbling around, works like it should)
Thanks for this design!

Hi, may I know the diameter of the balls? or do you have the STL file of the balls? Thanks!

The softair balls have an exact diamenter of 5.85mm. I uploaded a stl-file for the balls, but I never printed them.

thank you very much!

Glad I could help :)

Glad I could help :)