I don't know for certain what your chain cross references to in other sizes, But I would have to think you can buy replacement chain directly from bobcat if you wanted too, or ask them what size it is?
the same would go with contacting companys that make chains for equipment like
https://www.usarollerchain.com/skid-steer-drive-chain-replacement-s/3990.htm
and one of these chains
https://www.usarollerchain.com/Super-Roller-Chain-s/3583.htm
AND! I did a quick look on bobcats site and found this
according to bobcat this is what I think you need
https://shop.bobcat.com/parts/drive-train/drive-chain
https://shop.bobcat.com/chain-drive-6557830
and lastly, once you know for certain what exact chain you need, you can always search online for best prices , as I am sure there are tons of places to get it form!
and I even I know some folks that got there's off Amazon for a deal, but the quality and where made, might not be the same as some better quality brands out there, but its your wallet and choice on what to buy!