... .Deep groove ball bearing;6000,6200,6300, 6800,6900, 16001 Series with ZZ, 2RS, NR and OPEN types2.Taper roller bearing ... , four-row, and full complement, especially NU, NJ, NUP, RN, series)4.Spherical roller bearing(or Self-aligning roller Bearing); 21300 ... , 22200, 22300, 23000, 23100, 23200, 24000 series MB, CA/W33, CC/W33, CCK/W33 C35.Self-aligning ball bearings ...