Lost a ball bearing on my tub grinder for the belt tensioner that drives the augers and conveyer. Haybuster only sells the complete pully, a big cast iron job. So I took it on myself to source the bearing, what a difficult project. First the number on it is obsolete BCA 205AN, nothing found under that. So I go by measurements, nothing by that. Turns out it is an Agriculture only application. I had never heard of that. It measures out to a BCA/National 205RVA or Fafner/SKF/Peer 205KRP2. I think I have one coming from Motion Industries. The first one was all correct but it was spherical, not square bore, so that just goes on the shelf. The bearing house I ordered it from did not specify that on the specs...