Schechtl bearing no?

Hello to all. Wisconsin USA. We have a schechtl mac 310 folding machine. Two years ago we hade a spindle bearing go out and it cost $4000 for the manufacturer to replace it. 4 months the bearing started to make noise again and they won't stand by it. Now I need to replace the bearings again . How do I get the bearing number without taking the machine apart ? Or can I get the bearings from somewhere other than Germany? I will be replaceing them myself this time. I helped the tech last time and it really isn't all that hard.>>>