联轴器SJCM-55C-GR RD-12K5X19K6 12K5X19K7 12K5X19K8 12K5X20K6
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SJCM-55C-GR-12K5X19K6-12K5X19K7-12K5X19K8-12K5X20-12K5X20K6
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