Self-Aligning ball bearing: 1.The inner of self-aligning ball bearings is cylinder or taper. 2.Self-Aligning ball bearing can’t be split. 3.Self-aligning ball bearings can work in tempreture 150 degree after heat treatment. The type have 12, 13, 14, 22, 23 series. 4.Parts of self-aligning ball bearing: Model No.d(mm)D(mm)B(mm)10882271200103091201ATN1232101203K1740121204AKTN20471412094585191221M105190361305K2562171309AKTN45100251313K65140331320J100215521319KM95200452200A-2RSTN1030142208K4080232210AKTN50902322189016040230945100362317K8518060118/750K75092078