Item: 627RSStructure: Deep GrooveMaterial: Bearing SteelBore Dia (d): 7 mmOuter Dia (D): 22 mmWidth (B): 7 mmClosures: Rubber SealLubrication: GreaseMagnetic: littleHardness: 58HRCCorrosion Resistance: GeneralClearance: C0Grades: ABEC-7