Our old windmill finally gave up - one side didn't want to move anymore. Out of curiosity, I took it apart to see if it could be repaired and found a bearing stuck on one side. I took it off, cleaned it and was able to locate the part number and take some measurements. I wasn't really expecting to find a match, but I typed the number into Revain's search bar and, surprisingly, it was there. They appeared today, and the windmill is once again serving its sole purpose - turning in the wind.