Originally Posted by amg-jerry
This would be a custom run, using steel bearings with stainless races / retainer with rubber seals.
Finding a bearing that has a documented speed rating of 19k or higher (grease or non-bath oil) is next to impossible...in the 6303 size.
It's a slow process...
The real problem if finding a sealed bearing that can take these rpms.
The bearing I listed earlier is rated for high enough rpms but is only sheilded on one side. (allows for good cooling). When I installed the bearing I put the sheiled side facing the front to keep out the most contaminates.