The company I work for is looking into ways to test a certain type of bearing found in the transmissions we rebuild. We want to re-use the bearings if they are good, but we need to come up with a good way to test them. We're actually looking at building a machine to automatically test them. We have all the software and programming capabilies to completely automate the process, I just need some more info on the idea and practices behind the testing measurement. I'm fairly new to the idea of ultra-sonic testing, but I've been doing some reading, and I think this would be the way we want to go. My question is, would anyone have any helpful links to a similar machine? I need to learn some more about exactly what to look for in the ultra-sonics, and some info about what hardware to use - what ultra-sonic sensor to use. Ideally, we would use LABView or a PLC to do the measuring and checking. The operator would insert the bearing, hit start, and the machine would do all the measuring and come back with a pass or fail. It would be great if someone knows where I could find such a machine, and maybe make a trip to see how it has been done before. Any help is appreciated.