05-09-2015, 03:17 PM
Great work Darren!
So all you have to do now is to mill the hex and you have a good drawbar for the holders with M12x1.75 thread, cool! How many of your holders use that thread, how many use a 1/2-13UNC, and some other as well?
I don't know is using a thrust bearing there is good or not. I've seen rotating washers there, but never an actual bearing. Would it allow you to over-torque the threads in the holders? Would it come loose to easily, especially upon reversal when power tapping, or was that shown on the Kondia assembly drawings? Heck, my machine probably has a thrust bearing there and I don't even know it. ;)
So all you have to do now is to mill the hex and you have a good drawbar for the holders with M12x1.75 thread, cool! How many of your holders use that thread, how many use a 1/2-13UNC, and some other as well?
I don't know is using a thrust bearing there is good or not. I've seen rotating washers there, but never an actual bearing. Would it allow you to over-torque the threads in the holders? Would it come loose to easily, especially upon reversal when power tapping, or was that shown on the Kondia assembly drawings? Heck, my machine probably has a thrust bearing there and I don't even know it. ;)