:) :) :).

5/8 are about 30.00 for a 3ft lenght and the nuts are 25.00 I belive

What is the different between non-preloaded and preloaded?

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:) :) :)

You really don't save any money with 2 non preloaded. Preloaded nuts come with both nuts and the wiper kit (required in MOST cases). At that point your within a few bucks of a preload.

I've made tham before, it's a no win.

I've been in contact with an individual at Nook industries. The quotes I've received where...
The 0631-0200XPR (5/8" .001" accuracy) ballscrew is sold in two different lengths 4' ($73.64) and 6' ($92.05).
They have one nonpreloaded ballnut at $180.10 and five other preloaded nuts that start at $212.00 and go up to $633.77.
They won't sell nuts alone in this line (XPR or SGT) with out prefitting it to the screw.
The 0631-0200SGT line (5/8" .0005" accuracy) of screw is $617.81 for the 4 foot screw.
0631-0200SRT (5/8" .004" accuracy) screws are $24.54 for 2' and a SEL preloaded nut for $167.37. They do sell 4 and 6 foot lengths also.
Hope this helps anyone in the Nook ballscrew market.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) to be politically correct

Here is what i paid -

I got the screws and balls from
Roton 317-821-4400 the part numbers are

59321-36 ball screw 29.95 ea
19193 ball nut 19.40 ea
to make them pre loaded 9.65 ea

I was close. :)

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Industrial Hobbies also sells ballscrews and nuts at good prices.
http://www.industrialhobbies.com/

Thanks CNCadmin for the heads up on Roton.
They are worth looking into also.
http://www.roton.com/

:) :) :)