Search the Fasco 7102 number on Google Images, and follow the links to the one that looks closest.
They ain't rocket parts. If they look like the original, they like as not, will fit like the original.
Pull it apart and check the bearings. Probably a 608 series bearing, and probably nothing wrong with the motor that either new bearings or a clean and re-pack won't fix.
608's are a common skateboard or rollerblade wheel bearing. Cheap!
http://www.fasco.com/pdf/p08-09.pdf shows interchange data. Was first link that showed on Google search.
Cheers
Trev