Consider a mechanical setup, in which there are two concentric tubes, both to rotate counter to each other ie in a contra rotating fashion. Inner tube runs clockwise, and outer tube runs counter clockwise. Is there any kind of bearing that I can use between the tubes to ensure smooth functioning of mechanism. Or just a plain bearing is effective to put in between the tubes, for smooth running. The rpm of inner tube is 1000 rpm, and outer is about 10000 rpm. So can I put any bearing with capacity of about 11000 rpm, work in this scenario, ie can i install any bearing in between the tubes, or are there specific application bearings to be used for the concentric contra rotating tubes.
Yes, pretty much any bearing (rolling element bearing or journal bearing) that can take 11,000 rpm should be able to handle being placed in a differential configuration.
My original comment as an answer : Check out roller bearings, other questions : will they need forced lubrication - is this possible ? What is the required life? Will they be easy to change? Or replace complete unit. What are the loads that need to be supported end or side loading etc.