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There is a gear with a pin that engages a spanner nut on the end of the spindle-- do you have this piece?
View attachment 287457
The straight knurled section slides back and forth and when slid toward the chuck there is a key that engages the gear to prevent loosening.
That part is the one that gets lost,. The closers were made by Royal, I was able to grind one to fit " the back of the ee spindle" from another brand lathe I found on ebay.
That part is the one that gets lost,. The closers were made by Royal, I was able to grind one to fit " the back of the ee spindle" from another brand lathe I found on ebay.
It's not a drawing, but the dimensions aren't supercritical and my skills are limited.
Slip fit on spindle tube, about half an inch thick depending on exact drawbar setup, parallel faces, and something like teeth to engage the sliding sleeve's locking pin once you've set correct collet tension. Gear teeth are balanced and were easy to make at scale originally, but not specifically necessary if you're diy'ing.
I ordered the correctly dimensioned gear from McMaster Carr and will turn it to your dimensions and harden it. Will arrive today.
Will post photos
Thanks so much for your help
Steve
Part 6325k7 is the McMaster Carr number
Steve
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