cub clutch release bearing

There's nothing mystical about it. It's one of two things:

1. Bearing is made of sub-standard materials.
2. Bearing is being installed improperly, i.e. I've heard that it comes dry, and that people are installing them that way.

In the case of #1, okay, that's understandable.

If it's #2, then it's your own fault for not greasing the bearing, right?

2. I haven't had one in my own hands but I was under the impression they were made with sealed bearings, which makes dry bearings another #1, at least in some cases.

3. The carrier for the Cub throwout bearing does not run on the shaft but is suspended from a pivot point high in the bell housing. Thus the bearing will move in an arc and it is impossible for it to remain concentric with the spinning pressure plate. Thus there will be movement of the bearing face against the fingers. Bottom line, the clutch mechanism was designed for a carbon block bearing and a ball bearing with a hard face doesn't belong there.