Sieg SX2.7 CNC conversion

[Edward]

The ballnut type is the same as the Australian.

Ballscrew, 16mm, bog standard chinese stuff.

300mm long for the Y
600mm long for the X
500mm long for the Z

But note that each length is a little longer than the above, for the bearings, thread, nut, etc.

Best to get the mill and then measure up. Bear in mind that if you get it in the US, the mill table and other specs may differ a little. I only had to cut the very end of the floating Y ballscrew, about 9mm off the end. I used an angle grinder and it cut in about a minute. You can also use the Dremel with a little cutting disk, but it will take longer and the cut won't be as clean, so you just use a file to flatten the finish. The ballscrew won't bend unless you force it. I just clamped it gently with some protection and only the very end of the ballscrew was exposed. I bought a cheap angle grinder for this, scary to use the first time, but actually it was a lot easier than I thought. I looked like an astronaut with all the protection, but better safe than sorry:)


Edward