mark costello
Stainless
- Joined
- Jun 25, 2001
- Location
- lancaster,ohio.43130
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Yeah, somebody made a mirror image. As a result, the pins are rotated so their notches cannot engage with the spindle nose camlocks. I confess, it took me a moment to realize why having the retaining screws on the other side would be a problem: because they set the rotation of the pins and the pins require a specific orientation.
It looks like the small lock hole is on the wrong side of the pin, so when the pin lines up with the small lock hole the cam slot is pointing opposite the spindle cam.
I had the same problem changing a D1-11 20” 4-jaw on a large Asian lathe. I removed the studs and machined out grooves on the opposite sides with a ball endmill and reinstalled the holding studs using the same lockdown screws in back of adapter. It works fine.
Scrap. Maker has no clue., never ever looked at or digested ASA/ASME B5.9 Spindle Noses
Would work fine if you run in reverse
Easy fix: rotate your lathe 180 degrees. You're welcome
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