Screw-on chuck mounting to bayonet.

[tonyfoale]

-
These seem to be tapered roller bearings. Any comment on preloading these?
Johan

Difficult to get right.
There is not enough thickness of material to put a pair of angular contact bearings at the sharp end. I would need to line bore the head and insert a sleeve all the way through. It is doable, but would be too much work/time.