Quote Originally Posted by komatias View Post
A design note here on the selection of bearings. For machine tools it is preferable to use shielded bearings to sealed. Rubber seals add friction and heat to the assembly that you could do without. Shields do not contact the inner race so they do not add too much friction and allow oil to seep through to the balls.
Are you sure about that? All the RS type I've played with don't appear to have had an interference fit? Surely if they did the rubber would just brake down and contaminate the balls?

.Me