Whether it fits or not assumes the seller made it correctly. As far
as if the same part fits all of those listed machines, you could
probably verify that yourself by looking at parts catalogs to see if
the same part number is listed for each size lathe. It would make
sense that some SB lathes would use the same part. You see that a
lot in the 9's and 10's. Unfortunately, I do not have a direct
answer.
