not sure what your budget is but I got one of these surplus: Spindle headstock - Precision spindle assembly - Dunham Tool
I'm in the process of gathering parts to start my cnc lathe build. I am looking for a spindle that has a 1" bore and was considering the spindle off of the grizzly g0602. Does anyone have the dimensions on this spindle? The overall length, the length from bearing journal to bearing journal, diameter of bearing journal, etc? Also does anyone have the dimensions of the headstock, length, width, and height?
Is there another spindle to consider that would be relatively easy to obtain and would have at least a 1" bore?
Do any of the components include the bearings? Those things can be very costly. I'm currently building a small spindle with 25 mm ID angular contact bearings. They are P4 (ABEC 7), 25 deg. contact angle, heavy preload, sealed bearings at near $400/pair.
Be sure you match the bearing specs to what you actually need in your spindle. That extra level of precision can be extra expensive.