Help needed to find cheeper ceramic bearings for my KJ 66. having worked on this engine for over 2 years and modified the combustion chamber and nozzle guide vains along with the fuel ring . I am now able to get a very reliable 32 pounds of thrust out of this engine at 187500 rpm . but the bearings are not as good as I would like them to be. I also would like to know how others are lubricating these bearings to give total reliability.

many thanks Doctor Jason