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Old 09-27-2012, 04:45 PM   #8
Studly Adventurer
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Joined: Dec 2009
Location: Chicken Necker Side
Oddometer: 707
I've worked on NC lathes and the ballscrew shafts had drilled and reamed taper pins slotted on the large end and the safety wired to keep it from backing out. These shafts took a lot of shocks and the only time I had a problem was when there was a tremendous wreck (shearing the brass pins on the slide). The taper pins never broke but were a bit bent! Drove them out ,rereamed the hole and put a slightly larger taper pin in. It might be worth a look?
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