Ballscrew Size and Pitch

[Mad Professor]

I can confirm that Chai does indeed sell both RM2005 and RM2010 ballscrews.

[Christian Knuell]

Hi,

I think the only practical solution for a 1800mm Axis is to fix the ballscrew and drive the nut.
This is rather expensive but you get a very fast and dynamic machine and a 20mm Ballscrew will be OK.
(I have a >2000mm Axis with a 16mm ballscrew - but this is a foam cutter with low requirements - the spindle bends quite a bit even though it is fixed at both ends and put under moderate tension)

If you drive the ballscrew as usual you'll need something about 30mm diameter to get any reasonable speed - but this will still be very very low dynamic due to the spindles high inertia.

Christian

[Ricardoco]

I can confirm that Chai does indeed sell both RM2005 and RM2010 ballscrews.

So Can I as i have Two 2100mm 2010 ballscrews and nuts in my front room, waiting to go on my machine along with the rotating ballnut mounts made by Jonathan..

Rick

[Jonathan]

So Can I as i have Two 2100mm 2010 ballscrews and nuts in my front room, waiting to go on my machine along with the rotating ballnut mounts made by Jonathan..

Rick

Er, I hope not as you said recently they were RM2510 so that's what I made the rotating ballnut mounts for, since at the time 2010 wasn't available. If they are RM2010 I will have to make new shafts to suit.

[Ricardoco]

Er, I hope not as you said recently they were RM2510 so that's what I made the rotating ballnut mounts for, since at the time 2010 wasn't available. If they are RM2010 I will have to make new shafts to suit.

Yep you are correct, that was my mistake, however i did enquire about 2010 when i purchased mine and Chai confirmed he did them..



Rick