Profile: Shandong Deruna Bearing Company specializes in providing bearing products. Our products include deep groove ball bearings, self-aligning ball bearings, cylindrical roller bearings, self-aligning roller bearings, angular contact bearings, tapered roller bearings, thrust ball bearings, thrust roller bearings, spherical bearings, and automobile bearings. Deep groove ball bearings are the most common type of rolling bearing. Deep groove ball bearings consist of an outer ring, an inner ring, a set of steel balls and a cage. Deep groove ball bearings are available in single row and double row. Deep groove ball structure is also divided into sealed and open type. Open type refers to bearings without a sealed structure.