Originally Posted by One of Many  The depth of the keyway may be a bit shallow. You could back out the key in the spindle a tad. The lower bearing cap would need to be removed to gain access to the setscrew that retains the key.
Either that or carefully recut the keyway in the collet.
DC |
The depth? It is exactly as the one from the working chucks. Its width is however slightly less (by .005). Also when it doesnt fit in it stops decisively and against something solid. I will double check the depth today though.