... groove ball 2)self-anligning bearings,(1200,1300,2200,2300 series)3)stainless steel ball bearings, 4), Angular contact ... ball bearings, 7000, 7200, 7300, 3200, 3300,4200 series.5), Special bearing & un-standard bearing;6). Needle roller bearings ... NUJ, NU, NNU...)8). Spherical roller bearing(22200 series, 22300 series, 23000 series, 23100 series, 23200 series);9) Bearing Unit(UCP, UC, UK, UCT, ...