2209 Self Aligning Ball Bearing 45x85x23mm2209 Self Aligning Ball Bearing 45mm x 85mm x 23mm 2209 Self Aligning Ball Bearing has a spherical outer ring raceway, the balls and cage continue to rotate, this type of bearings is suitable when the displacement of the centers around which the shaft and housing rotate and shaft deflection are likely to occur, made from durable 52100 alloy steel, commonly known as chrome steel. 2209 Ball Bearing Self Aligning Bearing Dimensions: 45mm x 85mm x 23mm