What does the number on the bearing mean

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The numbers on the bearing indicate the bearing model, bearing type, size, etc.


Example:


30206:3 represents tapered roller bearing, 0 represents width series 0, 2 represents diameter series 2, and 06 represents bearing inner diameter of 30mm.


6203:6 represents single row deep groove ball bearing, 2 represents diameter series 2, 03 represents bearing inner diameter, and 6203 has an inner diameter of 17 mm.


7206:7 represents single row angular contact ball bearing, 2 represents diameter series 2, and 06 represents bearing inner diameter of 30mm.


180902:180 refers to double rubber cover sealing, and 9 refers to diameter series 9, which belongs to light and thin series. 02 refers to the inner diameter of the bearing, and the inner diameter of 180902 is 15mm.

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