I could find out, but all I know is that I can switch blades like any other cut off saw. Honestly... I have no clue what the Arbor adapter is.
Blades will not be the issue. You should be able to change arbor size with adaptors. The problem is the TS 460 if I am correct is a 72 cc saw. The K950 is a 96 cc saw. This makes all the differance when cutting with the aggresive blades. We bought several TS460 a few years back and now are trying to switch back to the bigger saw. We also were told by our stihl rep it voids the warrenty. Just make sure if a saw goes down you take the aggresive blade off before sending it in.