Are those die-cast jaws?
Are those die-cast jaws?
Dave these are my small chucks off my unimat db200
4jaw is 2-1/3” 3jaw is 2-1/8” both M1-12 thread
I made the straight & MT#2 arbors.
#2 is for my 6” RT
MT #3 & straight arbor is for my old SB9
#3 MT arbor was a drill chuck arbor I cut off & threaded.
#2 & #3 arbors are threaded for draw bar or pull bolt.
The Norton chuck 3jaw is 5”