I think if I were building a 20,000 rpm spindle my concerns would probably be surrounding more of what (grade) of bearings vs. what type! For instance grade or class 7’s vs. grade or class 9’s! 9’s I think would give you everything you need with much higher precision that can handle the 20,000 rpm. I don’t think I’d go to ceramic simply because they can’t take any lateral loads. You never know when an accident could happen and take them out. For that reason alone it's a stupid idea. |