VÒNG BI-BẠC ĐẠN-HỐP SỐ-RN206M-RN203-RN204-RN205-RN206-RN307-RN212-RN219-RN220-RN222-RN228-RN224-RN312-M-17-11-13-21-29-35-43-51-59-87-NTN-KOYO-NSK-NACHI-FAG-SKF-NHẬT