My mate Waqar -who is a member of the forum, needed a front wheel hub bearing changed, and I said this should be easy! I have changed the old style wheel bearings before, and this is a bolt on job. Well it was going well until we had removed the hub, only to find the hub bearing and the carrier was seized together.  The car was left overnight, as I would use my press. Still no joy. It took the use of a blow torch and lots of welly from hammer plus a press to finally separate the parts.