Can anyone think of any reasons why I should not be concerned about a seemingly large amount of end play in a bearing? The bearing is a twin taper roller bearing with a split inner race. It's carrying a mild, pretty steady axial load, and a moderate, pretty steady radial load, at a moderate, steady speed. The end float is small and nothing for concern, but I'm a bit worried about the amount of end play, - you can see the attached wheel wobbling when you grasp and 'rock' it from side to side. Surely this is causing edge loading on the rollers? Any situations where it might be expected, or no cause for concern?