All steel, no welding, 2000x1300x250mm

[Wal]

Do you have a picture of a supported round rail where shaft and support are separated ?

I don't, I'm afraid, but here's a link to some data etc. for my TBRs:

http://www.zappautomation.co.uk/mech...aund-rail.html

IIRC even though the holes were spaced equally, there was no control over how far the first/last bolts fell from the ends of the rail - it didn't matter as I didn't need to separate the shaft from its support and I had full control over where I was putting my own mounting holes in the supporting base. I imagine it matters a bit more for you, but you could always buy over-length and then cut down so that the holes fall where you need 'em to...

>As for the rails...somehow I have a feeling that you will end up with HIWIN stuff.

Yes yes! (...and I like my round rails, but profile is the way to go..!)

Wal.