... , 608, 609, 6000, 6001, 6002, 6003, 6004, 6005, 6006--- Open, ZZ(Steel Shields), 2RS, UG, 2RZ; 2). 6200 Series: 626, 627 ... , 628, 629, 6200, 6201, 6202, 6203, 6204, 6205, 6206--- Open, ZZ(Steel Shields), 2RS, UG, 2RZ; 3). 6300 Series: 6300, 6301 ... , 6302, 6303, 6304, 6305--- Open, ZZ(Steel Shields), 2RS, UG, 2RZ; 4). Other Non-standard Bearings ...