Posted by steve green on September 26, 2007 at 23:43:01:
We have just purchased a B-C type T hobber that is also called a 16-11. It is used for taper root splines. We do not know the differential constant to cut helical gears. The index constant is 15 over number of teeth and it has a 2 thread worm gear on work spindle. Can anyone help. Steve