KOYO 83A916CSH29TC4 with Peg / PinTZR 250 3 Open Type Deep Groove Ball Bearing 25x55x15mm

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 of either oil or grease, used in gearboxes and other environments where no foreign matter would be present and a lubricant supply is available.
Benefits: Used widely in transmissions etc, can be used in oil or greased, cost effective solution