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TORRINGTON FAFNIR9117KD轴承FAG6010SRS轴承KOYO7305CDB轴承SNR7228HDF轴承NTNNA 49/32轴承NTNBK 5520轴承IKOTALM1812轴承INA81208TN轴承NSK29440轴承FAG33208轴承NSKNU 2330 EM轴承ZKLNJ 2240B轴承NSKN 1024轴承FAGB7206E.T.P4S.UL轴承SKF61822-2RS1 轴承