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Printable Ball Bearing Upgrade

by GregFrost, published

Printable Ball Bearing Upgrade by GregFrost May 16, 2011

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Summary

Printable version of blddk's great idea.

Instructions

Print. Slide the small one over the bearing.
Slide the large one over the small one and it should ratchet into place.

The model is designed for 0.4mm layers 1.5 w/t.

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hi greg, nice item.

I added a 'tolerance' to the outer shell to allow it to nest better, the one with no clearance simply wouldn't nest for me (and a few others on #reprap commented the same). Also, a clipping plane to optionally cut the bearings in half so they can be retrofitted onto an existing rewrap without tak
ing it apart. Would you prefer to incorporate these changes, or suggest i make a derivative?
thanks, hbs

It looks like triffid_hunter has posted a derivative that is an improvement. I suggest you make a derivative of his.

Couldn't you design the ID to be a force fit on the bearing and then print one piece?

op - Thanks djcode. I see the other http://www.thingiverse.com/thing:469http://www.thingiverse.com/thi... is likely force fit and one piece done in April - 2009.

608 Idler Pulley
by hoeken

Also notice, this one is smaller. The bigger one can't be used for the prusa's x axis, because it is too big (width) to be there. Diameter also seems bigger, and might also cause a problem. But we also need someone to actually test this design :D

That requires you to do something different on one side to avoid overhangs. This design allows sheer walls on both sides of the belt and because there is a lip on the inside, the bearing is held in place. A few drops of acetone on the face of the inner ring before you slide the ratchet the ring over it and it will be welded as one piece.

For more versions of this, see http://www.thingiverse.com/thing:469http://www.thingiverse.com/thi... and its derivatives.

608 Idler Pulley
by hoeken

Well for those of us who dont use OpenSCAD amybe an STL file?

done. you should really use openscad though. it's great

I'm running an older computer that the video card can not be upgraded for the OpenGL and thus can not run OpenSCAD. Too Bad..... :'(

Looking good, got any pictures of it mounted/videos of it in action? :-D

excellent idea... I have already resoted to allowing the fender washers spin to keep the belt from climbing.

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