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Deep groove ball bearings are the most common type in the rolling bearing. Keep the architecture into an outer ring, an inner ring, a set of steel balls and a set of basic deep groove ball bearings. Deep groove ball bearing type single and double row of two types, single row deep groove ball bearing type code 6, double row deep groove ball bearings, code-named 4. Its simple structure, easy to use, is to produce the most popular, most widely used type of bearings