Micro Lathe 4 Jaw Chuck 80mm Diameter 3/4-16 Threaded Mount
4 jaw 3 1/4″ dia. chuck 3/4-16 thd mount; jaws adjusted independently (reversable heat treated steel jaws).
The 4 jaw chuck is the most versatile of all the chucks. It can hold round and square shaped materials. Unlike the 3 jaw chuck (self centering) each jaw on the 4 jaw chuck is adjusted independently of the others.
Some features of the 4 jaw chuck are:
Hardened steel jaws with steps
Reversable range 1/8 to 3 1/4 inches
Jaws are independently adjusted in pairs
Setting a workpiece off center creates crankcase and cam shapes
Parts may be machined to run very true (this will require more time to center than a self centering 3 jaw chuck)
Thread size 3/4 x 16 tpi
Part Number 1030