239/630-B-K-MB+AH39/630轴承 239/630-B-K-MB+H39/630轴承 6319-2Z轴承 239SM600-MA轴承 6318-2Z轴承 230/600-B-K-MB轴承 6317-2Z轴承 230/600-B-MB轴承 6316-2Z轴承 6315-2Z轴承 Z-572367.ZL-K-C5轴承 6314-2Z轴承 240/600-B-MB轴承 6313-2Z轴承 230/630-B-K-MB+AH30/630A轴承 230/630-B-K-MB+H30/630轴承