Where can I purchase a replacement motor?

Where can I purchase a replacement motor FT30-3d? Or find replacement parts for this particular fan motor? I am looking for the shaft insulators for both ends (fan blade and oscillating end) they have completely deteriorated and do nothing for the shaft ball bushings. And I might possibly need the running capacitor as well. Fan blades move a short distance and then stop. Any help you could provide would be appreciated.

Sincerely,

Greg Booth