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Classification of rolling bearing dimensions:

Update:05-07-2019
Summary:

1 miniature bearings - bearings with a nominal outside […]

1 miniature bearings - bearings with a nominal outside diameter range D < 26mm; 2 small bearings - bearings with a nominal outside diameter range of 26 ≤ D < 60mm; 3 medium and small bearings - bearings with a nominal outer diameter range of 60 ≤ D < 120mm; 4 medium and large bearings - bearings with a nominal outer diameter range of 120 ≤ D < 200mm; 5 large bearings - bearings with nominal outer diameters ranging from 200 ≤ D < 400 mm; 6 Extra large bearings - bearings with a nominal outer diameter range of 400 ≤ D < 2000 mm; 7 heavy large bearings - bearings with nominal outer diameter size range D ≥ 2000mm;

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