So in attempt to knurl my bearing surface on my Locker (gear carrier) It is a slip fit now. I turned down 2” round stock, down to 1.550, tapered it to give a live center some place the sit since the knurling takes some force. I went to chuck the locker/carrier in the lathe & the damn thing wouldn’t fit in the chuck. Yes it would fit in the 10” 4 jaw, but the jaws stick out too far & hit the ways. Even the larger lathe had smaller chucks. I then went ahead & made some bearing press plates with relief for the bearing cage.