Originally Posted by onehundred80
20,000 RPM OK but what is its Dynamic Load Rating compared to the basic 6303 bearing?
Stainless steel in my past experience is not good at speed and loads.
At 20k RPM oil is thrown about and surely will escape the seals, the 20k figure is in ideal conditions, not exactly what you have. Seals do dot keep everything in and everything out, there is a gap.
The Dynamic load rating is something you will need to get from the manufacturer along with how it was tested as far as load, speed, time...