Need a replacment belt? Looking for a part. Help please

I have a CNC machine, using a STAR Linear system for moving the spindle head. I have noticed the belts (if that is what they are called) has had little pieces of plastic belt falling off. Now the belt has busted, and I need a new belt. Please direct me to a location to purchase, and what I need to purchase.

the silver part of the rail system is 30 3/4" long.

If you need any more information from me to help, please ask. I have posted a few pictures and can post more if needed.


Thanks for your help,
Dan

Star linear was bought by bosch rexroth, should be able to contact your local bosch rexroth office to get part numbers and replacments