As Jason says, somewhere between 350 and 400kg, depending if yours is the 750mm b/c model, or 1,000mm.
And if you split the lathe and cabinet, be warned the lathe becomes incredibly top heavy, and if lifted will try and flip itself over.
I have had three X10 series Boxfords, currently a 330, and the way I move them is to keep them in one piece, and put them on four heavy duty castors.
I can push one around single handed on a concrete floor when it is on castors.