軸承型號. Model, 軸承尺寸(mm). 內徑. Inner, 外徑. Ourer, 厚度. Thickness. d, D, B. 6200 1 2 3, 10 12 15 17, 30 32 35 40, 9 10 11 12. 4 5 6 7, 20 25 30 35, 47 52
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