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Keep in mind too that this section of the ballscrew may never see any 'action' (i.e. ballnuts) when in use, since it is right next to the bearing. I didn't bother protecting mine and can't detect...

Some info here, although they don't mention the ST model:

http://www.lathes.co.uk/rusnok/index.html

- John

Not that this adds any useful info, but I installed 6.06 LTS a couple nights ago, the 'alternate cd' option, and it worked without a hitch.

EMC installed fine using that script that runs in the...

My only comment would be good luck. I'm not an accomplished machinist by *any* means, though... I bought roton rolled screws which are supposedly not hardened very deeply, and they kicked my a**...

I like the goal of gcam:

Design Goals

Indisputable domination of both free and commercial CAM software markets.

The live cd wouldn't work for me, I got an error that the x-server was unable to start. I fought with that for a while, then gave up and installed ubuntu6.0-something (w/o emc included) by...

For what it's worth, I just installed emc2 with ubuntu a couple nights ago - for me to run stepconf, I click 'applications' at the top, then 'cnc', and to the right of cnc I can select either emc2 or...

I just did the same on my roton ballscrews for my clausing 8520 project. I found these screws really kicked my *ss as far as using carbide tooling - my tired old south bend just didn't seem rigid...

You could look at mcmaster.com page 1053, they have some acme 3/8-10 nuts that are extra large so you can machine them, perhaps that would be an option?

- John

That old axiom 'you get what you pay for' pretty much always rings true in the end, doesn't it !

There is definitely axial play, as in easily felt by hand. This will cause you to shudder, but I'm...

Thanks much for the info, NC. I'm wondering though if the cost of having them ground is worth it for the quality of the bearing - they are labeled 'ampec', a google search of which turns up diddly...

I got a pair of 7201's from bearingsdirect.com for mounting the ballscrews on my clausing 8520. My clausing has bearing housings that are pretty much tailor-made for this size bearing, so I thought I...

Disclaimer: I do not yet have my cnc mill conversion done, I've only messed around with Mach3 with steppers on the bench.

My guess is that your motor tuning is off. Did you set this up in the...

In Mach3, the left-most box is 'steps per unit', so if you are doing 3200 steps per inch, you put 3200 in there. If you are working in metric, you put however many steps move you 1 'metric unit'. I...

Here is a link from SKF that has a lot of angular contact info, I found it interesting while going through my intensive reading of angular contact stuff, maybe you will too:
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