angular contact bearing single row and double row ISO9001:2000 certified company Third Party inspection angular contact ball bearing- Single and duplex arrangement: Series 78, 79, 70, 72, 73- Single and duplex arrangement, high precision grade: Series 78C, 79C, 70C, 72C, 73C- Double row type without filling slots: Series 52, 53 With filling slots: Series 32, 33steel cage and nylon cage available