Hello Gorden,
I use a modified rawbolt(projected type)place rawbolt in bearing,Run nut down thread and tighten up ,rawbolt eaxpands and grips inside bearing,at the top of thread I have welded a a washer to get my slide hammer hook in it,warm around bearing with blow torch and tap tap with slide hammer to remove bearing,does sometimes take a couple of attempts and more heat,Cheers Andy,