MJ4 Imperial Open Deep Groove Ball Bearing 4x8-1/2x1-3/4 inch

Imperial Open Deep Groove Ball Bearings: Open types are manufactured without seals to allow for the free circulation of either oil or grease, used in gearboxes and other environments where no foreign matter would be present and a lubricant supply is available. Manufactured to inch sizes to meet the requirements of many older British machines and many current American manufactured applications.
Benefits: Used widely in transmissions etc, can be used in oil or greased, cost effective solution