3D Printed Bearing - Open Source

[@PhG1961]

Great video Paul. Ignore the others who take credit for your work and/or are giving negative comments !

[@jadelon1877]

i dont mean to be offtopic but does anybody know a way to log back into an instagram account?? I was dumb forgot the account password. I would love any help you can offer me

[@aliharley211]

@Jad Elon instablaster :)

[@jadelon1877]

@Ali Harley i really appreciate your reply. I found the site through google and im in the hacking process atm. Seems to take a while so I will reply here later when my account password hopefully is recovered.

[@jadelon1877]

@Ali Harley it did the trick and I actually got access to my account again. Im so happy! Thank you so much, you really help me out!

[@aliharley211]

@Jad Elon Happy to help xD

[@user-hj6db7fp4i]

Just happened upon you Paul, your stuff is great, and it's obvious you've been working on this earlier and longer than most others. Thanks for making your stuff available for people like me who then get to benefit from it!

[@anonymouscoward9459]

That is a fantastic design Paul. The new bearing design removes the need to buy bearing assemblies , just the ball bearings (unless you steal them from your daughter , then no purchase is necessary) This whole assembly is very neat and compact and just looks right.

[@PaulGouldRobotics]

I'm glad that Cameron has shared this design. Large thin wall bearings are stupidly expensive and are very fragile. I'm sure there is a better way to assembly these I just can't do it without the use of the C spacer. Dissemble works well when pushing the cage from the other side. I'm not sure how to do that if I have two (or more) bearings back to back.

[@martylawson1638]

Nicely done! Commercial deep grove ball bearings are assembled just like this. For ball bearing experimentation I've been using 6mm air-soft pellets. They're quite precise and made of something like PLA so they hold up to light use, especially when lubricated. For higher loads I'd switch to Nylon, Delrin/POM, or Glass balls. I suspect the crunchiness in the bearing is due to layer start-stop lines. My bearings get much smoother when I file these lines off. Printing thin bearing race inserts in vase mode might smooth out the motion, as will sanding the races with a printed sanding block.

[@elminz]

I've used 6mm BB pellets in my designs, which you can get relatively cheap in bulk. The steel ones are exactly 6.00mm, the plastic ones are 5.95mm. I guess it's the defacto size for airsoft.

[@PaulGouldRobotics]

This might be hard to find in Australia

[@shashankshekhar6549]

Hi Paul, you are doing really great, I find you as an inspiration to me. Open source works are great but at least people should give you credits or steal it from you just show their intensions. One who does good deeds will never come to a bad end. :) NIce work

[@PaulGouldRobotics]

There are a few other designs that I am working on based on Gabrael Levine's Capstan. I don't think people need to give credit but I do like it when give a direction to find more information.

[@shashankshekhar6549]

@@PaulGouldRobotics are those cycloidal gear or planetary ? or in built with 3d printed crossed roller bearings.

[@PaulGouldRobotics]

@@shashankshekhar6549 It should be all explained in this video kzbin.info/www/bejne/iJyqhmWsbtl1fKc

[@shashankshekhar6549]

@@PaulGouldRobotics it looks likes some really cool gear reduction. do you refer to any particular text regarding its calculation ?

[@PaulGouldRobotics]

@@shashankshekhar6549 Do you mean the cycloidal gear profile?

[@haenselundgretel654]

Your videos are just perfect! Enough but not too much explanation, extraordinary content and a lot of great ideas! Cheers mate. I admire you.

[@PaulGouldRobotics]

I'm pretty happy that Cameron has shared his work with me and now others.

[@swannschilling474]

Great work!! Thanks for sharing!!

[@luoyangbobiprecisionbearin986]

Well done! Paul

[@simonmerrett]

Really thoughtful development. You have added great value by thinking about assembly and then demonstrating how to do it. Many of us neglect to share these all-important details but I'm glad you think them worthy of video production time. We're all the richer for it. Did you experiment much with the raceway profiles? Your cage looks great. I recall having a really coarse motion on my attempt at an elliptical wave generator bearing using similar (but less well designed and fabricated) parts. Someone (it may even have been you!) said I should review my raceway profile for better rolling action on the bearing balls. Mine were steel 5mm dia IIRC. I realise the point of this is partly to print the custom forms for easy reproduction but I can't help thinking that sheet delrin on a lathe or CNC router would be a great candidate for bearing parts like this.

[@PaulGouldRobotics]

Thanks. I was thinking that I should also show the failed attempts of the cages that didn't work and why. Cameron's cage was slightly different. This was my first attempt at 3D printed bearings as I haven't needed larger ones up until now. I haven't thought about the raceway profiles. I am trying to design with 3D printing in mind. This is also the first time I've used spinginess of plastic in a project. I have been using either nut/bolt or PTZ screws for assembly. Snap fits warrant investigation.

[@m_ja1n]

This is amazing!

[@gabrielgomezdelatorreparod9521]

Amazing design, thanks for sharing and teaching!

[@PaulGouldRobotics]

I'm pretty happy that Cameron has shared his work with me and now others.

[@beilkster]

Have you sanded the bearing track? That might help

[@PaulGouldRobotics]

The beads have holes in them causing the uneven operation. I have 4.7mm steel balling in them now and it is much better. I think I will sand the grooves just in case.

[@mactec54]

Excellent work no mater what others say time and date stamp designs are yours and anyone else would have to supply the same to clam they did it before you in a 3D printed design, I have made Bearing also but not 3D printed parts only machined parts a cage is a cage and can be made in many different ways

[@PaulGouldRobotics]

I'm still researching 3D printed bearings, Cameron's is the only one I've tried. Do you have a link to you work?

[@mactec54]

@@PaulGouldRobotics Some time ago I built custom Bearing assembles for SKF, so don't have much that I could show I don't have any 3D printed anything so you are in a world of try and remake until you perfect what ever you are making when I make a Bearing they are using special steels heat treated and ground, cages are machined like one I replaced in a spindle build I did some years ago I should do more but never have enough time to do videos I have a channel but not much related to this subject www.cnczone.com/forums/cnc-wood-router-project-log/139414-er16-router-spindle-build-2.html

[@PaulGouldRobotics]

@@mactec54 For my Master's project I was creating a predictive maintenance system for Bearings based on accelerometers and FFT. We would put a bunch of faults in different bearings and try to guess what the fault was during each bearing test. That was many many years ago and I'm only getting back into bearings now.

[@mactec54]

@@PaulGouldRobotics I never had to do much lab work, but know how, I don't know where you are located but 5mm balls can be brought very cheap depending on the grade here is a supply but there are many suppliers all over the world www.mcmaster.com/balls

[@PaulGouldRobotics]

@@mactec54 I'm in Australia , so shipping cost and time is not good from Mcmaster (unless work is doing an order)

[@nou5440]

the ending made me laugh lol

[@jdmech07]

Paul - fantastic work my friend. You also might consider airsoft balls. Feel free to contact me anytime - cheers

[@PaulGouldRobotics]

Finding them in Oz is difficult.

[@topordrop2402]

@@PaulGouldRobotics I'm in Aus too, I just buy loose steel balls on Ebay (about $35 for 1000 5mm balls), but to reduce weight on my robotic arm I've ordered some 3mm plastic balls from AliExpress.

[@PaulGouldRobotics]

@@topordrop2402 I will have to do the same. It will just take about 3-4weeks shipping.

[@azadayberguler6492]

I hope you will achieve your goal!

[@PaulGouldRobotics]

Thanks. I'm just learning and playing around.

[@andrsam3682]

Try to use airsoft BBs, they're pretty smooth

[@PaulGouldRobotics]

Finding them in Oz is difficult.

[@DerSolinski]

Use BB gun pellets. Cheap and come at the dozen. Also genius way to assemble the bearing. lol you're a sly one, aren't you?

[@PaulGouldRobotics]

Finding them in Oz is difficult. The assembly can, in part, from a "how it is made" bearing video or something similar. I was also surprised of how easily it can be taken apart.