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TORRINGTON FAFNIR9105K轴承TORRINGTON FAFNIR200K轴承NSK6221DDU轴承SKF7220CD轴承SNR7338CDB轴承SKF7204B/DB轴承SKFNKI 30/30轴承SKF1218K+H218轴承SKF1307EK+H307轴承NSK23038 CAK+H 3038轴承NSK23052 CAK+H 3052轴承FAG51113轴承NSKN 1016轴承KOYONJ215R+HJ215R轴承NSKHJ 2204轴承