Good Jaw Nut Material
Good Jaw Nut Material
(OP)
I am designing some jaw nuts for some chucks and was wondering what type of steel would be good for this application. My thoughts were maybe a case hardened 8620 or perhaps 4140.
Thanks for any help.
Thanks for any help.





RE: Good Jaw Nut Material
Either one would work as long as you masked the threads when case hardening.
We used some nuts made from A2 and D2 tool steel on special chucks.
What is the material of the chucks steel, cast, or ductile iron?
RE: Good Jaw Nut Material
RE: Good Jaw Nut Material
For steel it might be a better to have a harder jaw.
If you use 4140 be mindful of the tendency to crack in thin sections, at the threaded holes. 8620 would be less likely to crack.
Just for your information you might grab up a couple from different companies and do a little hardness test. The test could be as simple as a file test.
RE: Good Jaw Nut Material
RE: Good Jaw Nut Material
RE: Good Jaw Nut Material
RE: Good Jaw Nut Material