Good price for a 28” travel precision ballscrew?

[MrRage]

I’m looking at putting together a router/milling machine and was wondering what does a 28” travel precision ground ballscrew setup run these days? I’m going to need a complete ball screw assemble minus stepper motor, unless its cheaper to get it with a stepper.

[ViperTX]

New....very expensive....figure in the $1500 or so. Each bearing mount is typically in the $300 to $500 range and there are two of them....

[MrRage]

How about used? Sounds like anything below $500 would be a great price for this type of setup.

[ViperTX]

Yes, I'd try to shoot for the $200 to 300 for a used one with the end bearings holders included.

[MrRage]

I picked up 3 linier drives, with servos, precision ground ball screws and approximate 28” of travel off ebay today. The best part here was the price, 150 per unit. I don’t know about the technical specs but at any rate I’m sure its going to be a good system.

I believe its this unit in a custom packaging.
http://www.bell-everman.com/actuators.html

Ebay item:
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=7551795167

[jdownie]

This appears best-suited to a Y axis, on the gantry, given the two bearing on one side (the bottom?).

[ger21]

I'd have bought 4, to get 2 pairs of rails, and resell the extra ballscrew. With the rails, that's a great price.

[MrRage]

Well I got my first one in today and they are precision rolled, not ground. Because the assembly is already put together it probably won’t make that big of a difference. Still a decent price for what I’m getting, once I figure out what its specs are, and how to wire it up.