I am idly looking around and I noticed that a lot of chucks quote a TIR value but I am having trouble getting the official definition for where that is measured when it's quoted on a product page as just "TIR".
Am I to interpret that as measured on the shank of a bit right below the chuck jaws? Or farther down the bit some specific distance? I assume it's not on the chuck body itself because that doesn't tell you anything about the jaws.
I have a dial indicator and some precision ground drill rod so it would be interesting to compare to what I have currently.
Am I to interpret that as measured on the shank of a bit right below the chuck jaws? Or farther down the bit some specific distance? I assume it's not on the chuck body itself because that doesn't tell you anything about the jaws.
I have a dial indicator and some precision ground drill rod so it would be interesting to compare to what I have currently.