DIY CNC ball screw support upgrade BK12 bearing block.
Vložit
- čas přidán 4. 03. 2022
- This is a quick upgrade which has a tremendous impact on the quality of the CNC machine. More videos are coming, so, stay tuned.
Consider supporting me on
/ tinkeringnerd - Jak na to + styl
Nice video. Good explanation of why this is a great upgrade. Great work.
Thank you!
Thanks for the tip. I did the same thing, just bought the shims from a local shop. $1 for 10 pieces.
Thank you for watching!
Thanks for posting the info, was wondering why they came with plain bearings. Some thin M20 washers may fit as well here, will try that.
Thanks for watching. The idea behind the precision thickness shim is to make the gap between inner races infinitely small without them making contact.
Cheers.
I like your solution better, I've done a similar thing, except I had the bearings facing each other the opposite way and used a shim on the inner races
Thank you for watching! The way I did it lets me adjust the force of the angular contact by tightening up the screw nut, kinda made the most sense to me.
Cheers.
@@TinkeringNerd You're right that makes more sense. My solution required all 4 sides of each of the inner and outer races to be directly against each other and the journals, which made adjustment impossible. Only some of the shims and bearings I bought worked due to slightly varying tolerances. Your solution doesn't require the inside faces of the inner races to necessarily be touching directly and thus you have preload adjustability. If only you made your video 2 years earlier haha!
Yeah, if only I made this machine few years earlier! But, it’s never too late to make things right. Thanks again.
Nice video, could you please share the link where you bought the angular contact bearings from? Thank you.
Thank you. I bought those bearings from eBay. Search 7001B Bearing 12x28x8, they should come up. Cheers.
May I ask what punch die is that? Selfmade or bought? Thanks.
Btw good video, might have to do this aswell on my freshly made PrintNC. Went for the cheapest Ballscrew/Blocks Option as well :).
Thank you! The punch and die is from Harbor Freight. It’s cheap, but works for small projects. Cheers.
I guess the bk module is installed back wards , the bearing screws towards to motor!
Maybe you’re right, I’m not going to argue. There was no instructions with it and I installed it the way it fit best. Cheers.
@@TinkeringNerdgood look, and we will appreciate your feed back
thrust bearings with locking nuts have entered the chat...
I'd sure like to hear about the resulting reduction in play.
Reducing the “play” is achieved by selecting right size shims. Ideally, the final result has zero play.
@@TinkeringNerdhow much backlash did you end up with?
@@rgsparber1 I didn’t measure it at the time. Then, I crashed the machine and ball screws started making noise. I bought larger size ball screws with angular contact bearings. One of these days, I’ll replace them..
@@TinkeringNerd I tried to get regular ball bearings to work with shims but got too much backlash. Changed to angular bearings helped but I randomly see a 1.4 thou jump. Haven’t found the source yet.
@@rgsparber1 maybe you’re skipping steps? I’m just throwing ideas here :)
Cheers.
I can use for lead screw?
These are lead screws support bearing blocks.
You can buy bearing shims, a lot less hassle than making them and better quality…
Yeah, but I wouldn’t live up to the name of my channel if I didn’t make it myself.
you need thrust bearings bro
Maybe when I grow up :)
weird response but ok.@@TinkeringNerd
Please Tamil