Open Deep Groove Ball Bearings: One of the most commonly used bearings, the open types are manufactured without seals to allow for the free circulation ofeither oil or grease,used in gearboxes and other environments where no foreign matter would be present and alubricant supply is available.
Benefits:Used widely in transmissions etc, can be used in oil or greased, cost effective solution

Please note: This bearing has a special none standard bore size