Oneway Jaws (Talon and Stronghold) - Perfect Circle

[Edward Kerslake]

I'm in the process of designing some carriers for my jaws. I like to store my jaws in a tray, off the body of the chuck and for those dovetail jaws, at the perfect circle diameter.
That perfect circle is the ideal dimension of the tenon when gripping,

Does anyone know what these diameters are? Oneway doesn't list them (Vicmarc does in contrast)
I have a lot of jaws and if anyone has measurements to share, that would be great!

Thanks

 

[Holmes Anderson]

Maybe I don't understand what dimension you need but https://oneway.ca/products-category/chucks

 

[Edward Kerslake]

Thanks for trying but I have that info ;-*
If you look at the table, Oneway mentions the 'design diameter' (lower left of page)
That's the number I am looking for. It's the amount that the jaws have to be opened in order to grip a perfect circle (with the dovetail jaws)
For most manufacturers (e.g. Axminster) that's about 1/8" because they make the jaws from one billet and then slice it across to make the 4 jaws. I don't believe Oneway does this and so I am not sure.
I can eyeball, but if I could get the actual, that would be preferred
Thanks
E

 

[hughie]

For me the answer was more chucks, as I found chnaging jaws tedious and I often dropped the screw into the sawdust. OK now I have a chuck cupboard