6407 NR Open SKF Ball Bearing with Snap Ring Groove
Open bearings allow grease to flow freely through the bearing for lubrication purposes. A snap ring groove can simplify arrangement design as the bearings can be axially located in the housing by a snap (or retaining) ring, saving space.
SKF is the largest bearing manufacturer in the world and are known for high quality standards, which makes SKF ball bearings very popular.