The same thing happened to me in my gtr torana many years ago. I was traveling at an unspecified rate of knots down the freeway when the car pulled hard right and billowed white smoke out of the front right wheel. I had to pull over and let it cool down before limping the rest of the way home at 40kph. The next day i found that the bearing had welded itself to the stub axle and the disc hub was turning on a seized bearing. I had to replace the stub axle , bearing and hub. The caliper , pads and disc were not damaged. On the positive side i now drive at a specified rate of knots.