Double row deep groove ball bearings correspond in their structure and function to a pair of single row deep groove ball bearings. They are designed for high to very high speeds and are used where the load carrying capacity of single row deep groove ball bearings is not sufficient.Double row deep groove ball bearings are wider than single row deep groove ball bearings of the same bore and outside diameter but have a significantly higher load carrying capacity.Deep groove ball bearings are widely used in automobiles, household appliances, machine tools, motors, pumps, agricultural machinery, textile machinery, and many other fields.If you want to know more about WSBC 4308 Double row deep groove ball bearings, welcome you contact us freely .