Hello,
I am a translator who knows next to nothing about audio technology

but was asked to translate a text on SAEC products from Japanese to English. I really prefer to understand the text I translate so I tried to search the web but I did not find any real answers so I decided to ask you for help. The two problems I have are double edge bearing and oil elevator? Could you explain to me the structure of the bearing. A picture would be ideal but I do not want to push it

With th oil elevator I am totally in dark. I realize these questions are probably not very interesting for you but I would really appreciate your answer. Thank you so much.