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
High strength skid steer drive chain replacement for the most robust skid steer roller chain applications. Our skid steer chains are extremely shock resistant and offer the highest strengths in the industry!
www.usarollerchain.com
and one of these chains
Looking for the strongest roller chain out there? Check out Super Roller Chain from USA Roller Chain and Sprockets. We have these chains in stock and ready to ship. Discover super chains!
www.usarollerchain.com
AND! I did a quick look on bobcats site and found this
according to bobcat this is what I think you need
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!