Reclaimed parts, are they worth using for a reprap build?

I have just disassembled an old Fujitsu printer and taken out two rods 480mm x 18mm diameter also two stepper motors which are shown here

The rods may be usable and would certainly make really stable axes apart from the fact I can't find a linear bearing to fit them. I suppose I could use something like this?
The motors however being 34v, are they too much trouble to work with?

You could try to use the motors at 12V for a significantly reduced torque. It may still be enough to drive a RepRap, I'm not sure. The 18mm rod is extreme overkill for a standard sized RepRap, but there's no reason they wouldn't work. PLA bushing like the ones you posted should work fine.

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You could trap the rods in regular bearings, much like the original mendel does:

[reprap.org]

-Rob A>