Since the rings adapt themselves to the round form of the matching parts, this circumstance has no effect on the installed bearing, but it is noticed when measuring the bearing before installation.
Moon is round, its sweet smiling face, the stars, their full miss, yuanxiao, sweet, happy reunion, fireworks brassy, flying sincerely wish, wish, full bearing friendship warm!
The key to solve the problem lies in the optimal design of clearances between the insert rotary shaft and its bearing as well as the round insert fitted hole.