... ball bearings, 4), Angular contact ball bearings, 7000, 7200, 7300, 3200, 3300,4200 series.5), Special bearing & un-standard bearing;6). Needle roller ... NAK, RNA,AX BK...)7). Cylindrical roller bearing(NJ, NUJ, NU, NNU...)8). Spherical roller bearing(22200 series, 22300 series, 23000 ... Unit(UCP, UC, UK, UCT, UCF, SA, SB..)10). Tapered roller bearing(30200, 30300, 32300, 32200, 32010, 33000, LM- inch ...