Build cnc router without linear ball bearings ?? Flat metal on flat metal with lube ?
Hi..
It looks like everybody is making cnc routers with ball bearings for the linear motion.
But why ?
Isn't it possible to do without ball bearings for linear motion ?
Flat metal on flat metal with a lubricant in between ?
The bridgeport and sherlines mills do it this way.
Is this more difficult for hobbyists ?
Or are there other problems ?
Without ball bearings would be a lot cheaper.
You would need more motor power, but how much more ?
With ball bearings the contact area per ball is very small.
All the balls together still have a small contact area.
Without the ball bearings the pressure would be spread over a much bigger area.
Which would cause less wearing out.
Could this be done with ordenairy steel on steel ?
Or should this be a special metal ?
Which lubricant would be best ?
How flat should it be ?
Should it be highly polished ?
Is there a name for this methode ?
Would make it easier to search the internet for it.
I hope you can enlighten me with your knowledge.
I find it a interesting question, which wil not leave my mind for a while :-)
Thanks.
Vroemm.
Re: Build cnc router without linear ball bearings ?? Flat metal on flat metal with lu
If anybody have requirements for ball bearings please contact us
Re: Build cnc router without linear ball bearings ?? Flat metal on flat metal with lu
I AGREE 100% GLACERN. All though I do not have any experience in building CNC machines, I do understand the topic well! I will also sate that THK linear bearings are great quality! My Father and I are owner/ operators of a Tool and Die shop where we have built design tooling work for them since the early 90'S. I personally ,would not think twice about any options (expectably) if tolerance is an importance!! On a side note if we're give options have u concerted Delran?
YOU KNOW!!.........
When you are standing their watching the machine take the last cut you set-up, and you realize you made a mistake in your calculations, and you know you just scrapped the part. After you stop puking, You check it before you chuck it, and somehow it is right. And you just smile, cause every now and then it is just one of those days when you think Damn Imp Good!!.