Sorry, no the ES-1 and THE have the same pulley and sub platter.
both take the same exact belt. The only AR table I know of that doesn't use the same belt is the two motor XA.
The two motor TT, TA, TX and XA tables use the same length belt as later models for the main drive, but the widths vary between the two-speed models, which require the same width as the single-motor two speed tables, and the single-speed, which can use either the narrower belt or a wider one. The biggest difference in belts is the starter belt, which may be of either square or round cross-section depending on which pulleys the table came with (although I have used both in my square-cut pulleys over the years with no problem, so long as the length is right; round belts don't have the same "give" as square and need to be about 0.3" longer than spec when used in square-cut pulleys).
I don't know why there are so many different belts listed for different AR models on aftermarket sites. During the years when AR was providing spare parts, either directly or through AB Techservices, there was only one main drive belt for all the US models from the 60's through the 80's, and AB continues to list only one today. Perhaps the inconsistent quality of belts currently being offered as AR replacements (too long, too short, too wide, too thick, too stiff, not "stretchy" enough, etc.) make it necessary to spec different sizes for different models when it didn't used to be necessary to do so.
That weird "AR-11" model we keep hearing about periodically that was supposedly sourced from an overseas manufacturer is a completely different animal. No idea what it uses.
but no more with the sounds coming out of my revived baby..... 
