Wouldn't the repair sleeve in the picture require a bearing and a seal with a larger inside diameter to retain the proper axle/bearing clearance? It looks like it is simply pressed over the worn axle without doing any machining. If a sleeve was fabricated to fit over a turned-down axle, it would be necessary to do a Brinnell hardness test on the bearing area of the shaft before machining it, and try to duplicate that number with the repair sleeve. That's a little above the pay grade of the average hobby machinist, myself included! I acquired a Brinnell tester a while back, but it's in need of a serious rehab and recalibration!
Jerry
