4 commentaires

Hi Gigi, thanks! Glad you like the file. I'm pretty busy deg toy parts for my Etsy shop, but what parts do you need?

Hi, thanks for the ! It sounds like you assembled correctly, but just to clarify, one bearing is meant to seat on the shaft, and the other is meant to seat on the bottom of the tube. This is shown in the CAD images of the listing. Are you saying that the shoulder in the bottom of the tube is too short, or that the diameter is too small, to hold your second bearing firmly? Mine was pretty tight and I had to pound it in there with a dowel, but my whole assembly rolls very smoothly now. I've been running it for months now without any bearing walk-out or wobble.

Hi, yeah you could say so. I actually used a little bit of silikon adhesiv now to hold it in place.
In the end, both bearings sit on the "blue" shaft (one left, one right). The one on the left (as seen in the images) sits firmly because the "blue" part is just a little wider there. I thought it would be an easy fix to make the "blue" part a little wider on the right side as well. I know, the first bearings needs to be pushed over that area in order to slide it all the way to the left, but I guess that won't be such a inconvinience to do. :) And for the bearing in the right it shouldn't matter if it's just held by the outer shell ("pink" part) or both.

Ah, I think I see the problem: You're trying to seat both bearings on the shaft. So when you're deg a bearing "seat," you can either seat them on the inner race or the outer race (inner diameter/outer diameter). Bearing 1 should be firmly seated on its inner race on the blue shaft, and bearing two should be firmly seated on its outer race inside the pink tube (referencing pics). Bearing 1 on the blue shaft then has a slip fit to the pink tube, and bearing two in the pink tube has a slip fit to the blue shaft. If both bearings are fully seated, neither should be loose or slide along the shaft/tube assembly. If I were to force bearing 1 over a thick spot meant to seat bearing 2, it would likely destroy the tight fit needed to seat that bearing.

I understood how to assemble corretly and assembled it that way. (Not both bearings on the blue part - even though that's how they end up when it's fully assembled.) :) But still the bearing in the outer tube does not stay in place. So I came up with that idea of mine...

Oh, ok. My bad. So the seat on the pink tube was just too loose on your print? I could tighten this up, or alternatively use crush ribs, annular snap, etc to keep that 2nd bearing attached to the tube.

That would probably work as well, but since I am really new to 3D printing it will take me a while to be able to alter your awesome design.
Anyways, thanks again for your work (which I really enjoy) and ! :)

Do you want to re-print it? If so, I can alter the design for you and you can be my beta tester :)

Hi, yes sure I'd love that. :)

Hey, so on Friday, I received another printer: An Ender 3 V2. I revised the design to included (12) internal crush ribs at the bearing seat in the outer roller sleeve. I am currently printing prt 1 and will test it on the new Ender. If acceptable, I will update the file set.