1, single row taper roller bearing 2, ABEC-1,material:bearing steel 3, 30202 to 30218,30303 to 30318 4, 32004X to 32018X, single row taperl roller bearing1, single row taperl roller bearing2, ABEC-1,3, material:bearing steel4, 30202 to 30218,5, 30303 to 303186, 32004X to 32018X,7, LM1749/10, L68149/10,8, JLM104948/10,9, 18790/20,10, 18790/24,etc. single row taper roller bearing