Well, this head arrived yesterday via truck freight from lost creek machine. It weighs about 200 lbs... nice and beefy.
It apparently is oil lubricated, as there's a sight glass for checking the level, and it did leak some oil when it got tipped some. I'll plan on flushing the system out and maybe even adding a separate reservoir and sensors for checking the level when in operation.
Next step is to clean it up (literally, it just needs a wipe down for the most part) and remove the surface rust. Then open it up and figure out the basic parts I'll include in the final lathe, and measure those for inclusion in my CAD plan.
Given that it's an oil bath I think I might have to arrange to mount it in a vertical position on the slant bed so the oil lubricates it properly. Probably that means a triangular block to mount it on.
I'm aiming for a final work envelope of about 15x15 inches... the ballscrews I have for this have about that much threaded area on them.
Anyway, if I find out what the exact brand of this head is, I'll post it here.
If anyone can point me at a thread with pics of disassembly of a chinese 12x36 lathe head, I'd appreciate it.