Predator uni-loc question
- Thread starter 735038
- Start date
Thanks but looking for the thread size on the pin that goes into the insert.
It is not 3/8x10, I just had a thread on this very question. https://forums.azbilliards.com/threads/uniloc-qr.519244/
The question was, "what is the thread pitch for a uni-loc insert?".
Here is a picture showing a 3/8 10 tap, 3/8 10 allthread and a
3/8x10 Uni-Loc pin. If you look at the Uni-Loc pin you can see lines
from the original threads. This is the minor diameter of the 3/8x10 allthread.
They cut these from allthread.
Take 3/8x10 allthread reduce 0.890" of one end to 0.277 and it will screw into a
Uni-loc insert. A slight taper is needed on the end of the pin.
This is easily done on a lathe, if I had to I could do it with a drill and a file.
Here is a picture showing a 3/8 10 tap, 3/8 10 allthread and a
3/8x10 Uni-Loc pin. If you look at the Uni-Loc pin you can see lines
from the original threads. This is the minor diameter of the 3/8x10 allthread.
They cut these from allthread.
Take 3/8x10 allthread reduce 0.890" of one end to 0.277 and it will screw into a
Uni-loc insert. A slight taper is needed on the end of the pin.
This is easily done on a lathe, if I had to I could do it with a drill and a file.
Attachments
YES - I know, I was there when Paul D. Costain, a very good personal friend, created the very first Uni-loc pin on a Hardinge Toolroom Lathe, at his shop, PDC Machine in Rowley, Mass.
Additionally IF you care to check the patent #5,518,455 issued May 21, 1996 you will note that there are ONLY 2 names on the patent under "IINVENTORS" - Paul Costain (PDC Machine owner) & Gary Fumarola (shop foreman). This is significant since by law anyone who was directly involved/connect with the creation of such product had to be acknowledged by name on the patent.
IT is a 3/8 X 11 Modified thread insert and 3/8 X 11 pin.
And for those that are unable to find time to do the research the actual documents are in the file attached - please see items highlighted in RED.
I trust this answers all you questions.
Attachments
I am not sure how much more specific you need me to be but ALL your questions should be answered by opening up and examining the document I attached above . . .
Exactly what is your objective here ??
Exactly what is your objective here ??
What you are comparing the taps to is the glue-relief grooves...those are NOT left from using all thread.....those are especially cut in specifically to prevent a hydraulic pressure from building up as you screw it in. Uniloc pins are not made from all thread unless they are imposters...have seen those before.
GSE Cues definately come to mind. The pilot shank is a little smaller but the thread is almost perfect. The uni loc insert screws right on.
Attachments
Last edited:
I keep running into the PREOAIDR cues.....almost the same size pin as what you have there. Have to replace them as they won't fit a predator uniloc shaft
Just breaks my heart changing joint screws. Hahahaha
I hope they never change.